Bose PROFLIGHT Series 2 Instruction Manual

FAQ
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Bose ProFlight Series 2 Aviation Headset
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FREQUENTLY ASKED QUESTIONS
GENERAL PRODUCT QUESTIONS
What is the Bose ProFlight
Series 2 Aviation Headset?
The Bose ProFlight Series 2 Aviation Headset is the industry’s
smallest, quietest and most comfortable active noise cancelling
aviation headset. With an on-head weight of 4.5 ounces (128 grams),
the new ProFlight Series 2 Aviation Headset is designed for long
term comfort and is Bose’s most innovative aviation headset to
date. Engineered for pilots of moderately noisy pressurized turbine
powered aircraft, it incorporates more than 30 U.S. utility and
design patents. The ProFlight Series 2 Aviation Headset features
three modes of user selectable active noise cancellation, active
equalization to improve intelligibility of incoming transmissions,
a noise cancelling microphone for clearer outgoing transmissions,
improved tap control for talk-through communication and
full-function Bluetooth® connectivity with smartphones, tablets
or EFBs. ProFlight Series 2 introduces a non-Bluetooth product
variant. The ProFlight Series 2 Aviation Headset is FAA TSO
and E/TSO-C139a certified, meets all applicable ARINC standards
and is available with three dierent plug types.
Best used where noise is pervasive, comfort is required and where
communication is critical, the ProFlight Series 2 Aviation Headset
expands the Bose product line, providing headsets for both the
general and commercial aviation markets.
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How is the ProFlight Series 2
dierent from the previous model?
We’ve made several improvements based on customer feedback. The most
significant improvement is a thinner, lighter cable with much greater flexibility
that provides improved comfort and stability, and reduces on-head weight by
0.4 ounces (11 grams). Tap control for talk-through communication has been
improved. The microphone boom now includes winglets to assist in correct
mic alignment and adjustment. Finally, the carry case has been improved to
aid in faster stowage and transportation with the addition of a hanging loop
and carabiner, and a more open internal design.
Why did Bose choose an in-ear
configuration versus the more traditional
on- or around-ear configuration?
Bose has the technology that furthers the in-ear design’s performance and
provides a great balance of comfort, noise reduction and audio.
How is the ProFlight Series 2 dierent
from other aviation headsets?
Bose's most advanced aviation headset ever, ProFlight Series 2 features a
unique combination of benefits. Industry-leading active noise cancellation in
aviation comes with a comfortable, stable fit, without compromising the clear
audio and simple operation you expect from Bose.
We’ve engineered a high level of comfort into a unique in-ear design unlike
any other headset – a highly stable configuration without the usual intrusive
deep-insert eartips.
The ProFlight Series 2 includes the same features as the previous version:
three user selectable modes of active noise cancellation, a quick-release,
side-swappable cable and mic, Bose Acoustic Noise Cancelling® technology,
full-function Bluetooth connectivity and unique tap control for talk-through
communication. Additionally, ProFlight Series 2 incorporates a lighter, more
flexible cable and refinements to tap control for talk-through communication
have been made. A non-Bluetooth product option is now available.
Two AA batteries power 45+ hours of use with Bluetooth o and at least 25
hours with Bluetooth on. Aircraft-powered variants are also available. Users
switch seamlessly from battery power to aircraft power without compromising
headset performance. All models feature auto-o, which powers down the
headset automatically when not in use. Select models oer auto-on.
How many new and existing patents
does ProFlight Series 2 have?
This product is covered by more than 30 new and existing U.S. utility and design
patents. ProFlight Series 2 is one of the most heavily patented products Bose
has ever produced.
What is the dierence between the
ProFlight Series 2 and A20 headsets?
They are completely dierent headsets and have dierent fundamental
architectures, although they share features such as Bluetooth capability,
selectable stereo/mono and auto-on/auto-o. The A20 features an around-ear
design and is meant for noisier aircraft, such as non-pressurized single engine
models. The ProFlight Series 2 features a headbanded, in-ear design and is
meant for crewed aircraft, typically pressurized and less noisy, like most jets.
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Bose ProFlight Series 2 Aviation Headset

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What is included in the box with
the Bose ProFlight Series 2?
The ProFlight Series 2 Aviation Headset comes with:
·Cable and control module
·Carrying case with carabiner
·Two AA batteries
·Control module lanyard
·Quick-start guide
·Warranty card
How do I know what size of eartip
I'm using?
White, grey and black secondary colors found on the attach (inner) point
of the silicone eartips identify the size. White is small, grey is medium and
black is large.
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Bose ProFlight Series 2 Aviation Headset
Does the ProFlight Series 2 come
with an app?
Yes. The Bose Connect App, with Apple® and Android™ compatible versions, is
free to download. The app is not necessary or required for headset operation.
The app does provide unique functionality to the headset, including:
·Music/Audio share
·Easy connecting and renaming of connected Bluetooth® devices
·Product tour and troubleshooting info
·Periodic updates to provide additional capability
Why doesn’t the Bose ProFlight Series 2
have volume knobs?
There is a volume control/sensitivity switch inside the headset control module
battery compartment to simplify and slim the module. This easily accessible
two-position switch allows coarse-tuning. Fine-tuning the volume is typically
done on the aircraft audio panel.
I’ve heard ProFlight has issues with some
aircraft. Is ProFlight Series 2 compatible
with all aircraft?
Bose has designed and certified ProFlight Series 2 to FAA TSO C139a, and
RTCA/DO-214A, Minimum Operational Performance Standards for Aircraft
Audio Systems and Equipment. The headset should be compatible with any
aircraft that conform to these standards.
Please note: Some older aircraft, particularly the MD80 and MD88 models,
appear to use a constant current mode for their hot mic intercom mode. Bose
has encountered instances where certain aircraft intercom systems will cause
microphone damage and/or failure due to overheating. If you intend to use
ProFlight Series 2 with these aircraft types, please consult with your aircraft
technical team to ensure the intercom system operates within the specified
microphone bias voltage range and avoid using “always on” mic configurations.
·Owner’s guide
·Three sizes of silicone eartips
·Pouch

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FAQ
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Bose ProFlight Series 2 Aviation Headset
How many dierent versions and
configurations are available for
the Bose ProFlight Series 2?
Customers can configure their ProFlight Series 2 Aviation Headsets in many
ways. Customers have their choice of connector configurations with each
module. Each connector configuration is available with Bluetooth®, and
non-Bluetooth variants in dual-plug and 5 pin configurations. Designed for
use in both civilian and military aircraft, the ProFlight Series 2 oers most
common plug configurations:
Dual G/A plug (PJ 068 and 1/4-inch stereo) – With this option, the headset is
connected to the aircraft’s intercom via a dual plug and is not powered by the
aircraft. Two AA alkaline batteries provide a minimum of 45 hours of operation
while flying. This configuration is the most common version purchased by pilots.
XLR 5 pin – Often called the Airbus plug, this configuration is a mono
connection to the aircraft and, depending on the installation, may be powered
by the aircraft. When disconnected, the flexible power feature lets the headset
switch seamlessly from aircraft power to battery power so users experience
no interruption when the headset is plugged into or unplugged from a source
of power.
XLR 7 pin – The latest ARINC defined standard pin connection, which
provides for binaural audio, aircraft power as well as separate grounded audio,
microphone and EMI/EMF shields. Although not in wide use yet, it is being
adopted by the airline industry as a new standard plug type.
6 pin connector wired to the aircraft (LEMO) – With this option, the headset
is connected to the aircraft via a 6 pin connector and is powered directly from
the aircraft. When disconnected, the flexible power feature switches the headset
seamlessly from aircraft power to battery power so users experience no
interruption when the headset is plugged into or unplugged from the aircraft.*
*Adapters are available from Bose to convert a 6 pin connector to either a dual
G/A plug or a U174 for additional connection flexibility.
How long is the ProFlight Series 2
Aviation Headset's cable?
Length (m)
Headset to CM CM CM to Aircraft Total
ProFlight 1.33 0.1 0.58 2.0
Can I comfortably wear glasses with
the Bose ProFlight Series 2?
Yes. The side pads rest slightly behind and above the ear, which allows you to
put on and remove eyeglasses without touching the headset. You can wear
almost any frames you want without sacrificing noise reduction or comfort.
Can I switch the microphone to
either side?
Yes. The integrated boom mic and cable assembly can be attached to either
the left or right side of the headset. The self-guiding connector makes it easy
to attach the boom mic and cable assembly. The cable swaps easily in
seconds and without tools.
How does the ProFlight Series 2 work in
open cockpits or in aerobatic aircraft?
We do not suggest using the headset in open cockpits or outside of the
protective area behind a windscreen (typical in open cockpits). Exposure to
the slipstream will negatively impact performance. The low clamping force
and lightweight structure may not be stable enough for vigorous aerobatics.
We recommend that users use the headset on a 30-day trial to make sure it
works properly in their aircraft.
Does the ProFlight Series 2 have an
equalizer (EQ) or a way to equalize the
headset audio?
The ProFlight Series 2 has multiple built-in equalization circuits. The primary
ICS/radio communications path is designed to meet the latest TSO standard.
An additional active EQ optimizes the experience through the secondary
(Bluetooth) audio path. (Not available in non-Bluetooth option.)

What is the latest technology in
the Bose ProFlight Series 2?
The ProFlight Series 2 includes a number of important technologies. The
most significant is the digital active noise cancellation earbuds, which oer
comparable active noise reduction performance provided by the
industry-leading Bose A20, but with less passive noise reduction. The
headset performs in loud environments and across a wide range of
frequencies with Bose proprietary microchip and microphones both inside
and outside each bud. The small electronics system better senses the sound
by more eectively measuring, comparing and reacting to produce an
opposing cancellation signal. A proprietary eartip design provides additional
passive attenuation. The carefully selected materials of the headset eartip
block more noise from the ear and further improve comfort. The headset
features a high-performance microphone for communication, Bluetooth®
audio and a communications interface, all weighing in at just a fraction of the
weight of many competing aviation headsets.
TECHNOLOGY FAQ
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Bose ProFlight Series 2 Aviation Headset
NOISE CANCELLATION FAQ
How much noise reduction does the
Bose ProFlight Series 2 provide?
What is the attenuation at
dierent frequencies?
The ProFlight Series 2 provides three dierent modes of user selectable noise
cancellation. Each mode is engineered for a distinct use.
“Low” optimizes interpersonal communication outside the use of an intercom
system. “Medium” provides consistent noise reduction across a wider range
of frequencies. “High” provides the greatest amount of active noise reduction,
maximizing the signal-to-noise ratio for radio communication.
Bose makes no claim about specific levels of noise reduction. Such numbers
cannot accurately describe what you will hear when using the product. We
encourage pilots to try the product in a variety of aircraft to experience the
dramatic performance and capability of each mode for themselves.
What is the EPA-rated attenuation
of the Bose ProFlight Series 2?
The current methods specified by the EPA Noise Reduction Rating (NRR)
cannot be applied to active noise cancelling devices, only passive devices.
That’s why you see the NRR on traditional aviation headsets, but not on noise
cancelling aviation headsets. The EPA has for many years evaluated redefining
the NRR to include active noise cancelling devices in its scope, however, the
latest TSO guidelines call out ANSI test standards, which do relate to active
noise reducing aviation headsets, and to which Bose contributed to and
complies with.
How easy is it to hear other crew
members in a lower noise environment
with the headset on?
Because active noise reduction technology excels at the lower frequencies
(below 1khz), the ProFlight Series 2 will not completely cancel voices. Essentially,
this means that in many situations, voices can be heard where they would
usually be completely drowned out by aircraft and wind noise. In addition, the
“low” mode of operation is designed to optimize communication outside the
use of the intercom. Tap control for talk-through communication puts the
tapped earbud into this low mode and improves directional hearing to this ear.
Does Bose oer noise cancellation in
helmets for aircraft or motorcycles?
At this time, Bose does not oer active noise reduction within helmets.
But Bose conducts ongoing research to solve problems with unique
technology oerings.

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Bose ProFlight Series 2 Aviation Headset
COMFORT FAQ
How comfortable is the
Bose ProFlight Series 2?
The ProFlight Series 2 achieves the highest level of comfort through
thoughtful placement and shape of the side pads, the choice of materials,
the low overall on-head weight and clamping force, and an exclusive
silicone eartip design that allows for long term comfort without
sacrificing stability. Additionally, the ProFlight Series 2 has distinct left
and right eartips with a quick-release, side-swappable microphone and
cable for improved comfort and ergonomics.
What makes the ProFlight Series 2
so comfortable?
Overall, the ProFlight Series 2 is one of the smallest and lightest active
noise cancelling aviation headsets on the market. Its weight and size is
a balance of function, comfort and excellent stability. The three sizes of
the patented silicone eartips, which sit comfortably in the bowl of the
ear, contribute to greater comfort.
What is the weight of the headset
without cables?
The headset only weighs 3 ounces (85.2 grams), while the headset and half of
the upper cable with the boom mic weighs 4.5 ounces (128 grams).
I see Bose now advertises the availability
of custom molded ear tips for ProFlight
Series 2. Why are these being oered?
Bose is focused on ensuring all customers enjoy superior comfort and audio
quality when using our products. The ProFlight StayHear+ ear tips provide a
comfortable fit which will satisfy most customers. We realize that it is not
possible to accommodate every ear shape due to the wide variety of
physiological dierences and personal preferences. To this end, Bose is
working with a small group of approved partners who can provide
custom-molded ear tips to those customers who wish to personalize their
headset with custom-fit tips.
Custom molded ear tips can oer some benefits, such as slightly improved
stability in the ear, and possibly a better acoustic seal for those users who find
our standard tips unsuitable. These advantages may be oset by being more
dicult to insert and remove and may not end up as being as comfortable as
the standard tips for longer term use. These factors are ultimately a user
choice, and Bose feels that making more options available for user fit and
personalization is better for our customers.
Please contact Bose for a list of the latest approved partners for custom
molded ear tips.
What material are the earbuds made of? Soft silicone.
Are there tests for the earbuds for ear
health safety and long-term use? Are
there any tests regarding skin reactions
or test certificates?
Bose does extensive tests to assure that the products we use do not cause
skin irritation. However, there are instances of allergic reactions to many
dierent types of materials. When possible, Bose chooses materials that yield
the best results for biocompatibility.
Can the new headset be worn by
pilots who suer from auditory
eczema (exostosis)?
Bose has been selling these tips for years with millions of units in operation
without any significant issues. In any case, customers with skin conditions
should consult a doctor for advice. It is important to know that the buds do
not fit deeply in the ear canal; they are meant to rest carefully in the concha
or bowl of the ear and should not aggravate or irritate the skin in the canal.
Could a hearing aid be worn under/
behind the earbud?
Please consult with a qualified medical professional before using any
Bose Aviation headsets in conjunction with hearing aids.

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FAQ
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Bose ProFlight Series 2 Aviation Headset
Can I use the ProFlight Series 2 Aviation
Headset’s Bluetooth® function even when
it is unplugged from the intercom?
Yes. As long as the headset is turned on, audio can be played through the Bluetooth
connection. However, Bluetooth audio will not play when there is less than two hours
of battery life left in the headset (on Bluetooth-equipped models).
How do I know if my phone is compatible
with the ProFlight Series 2?
The ProFlight Series 2 is designed with Bluetooth ADK 4.2. If your device is
compatible with Bluetooth 4.1 or previous versions, it is compatible with the
ProFlight Series 2.
CUSTOMIZABLE AUDIO PRIORITIZATION FAQ (Applicable to Bluetooth-equipped models)
What does the blue or purple light
mean on the Bluetooth module?
The blue and purple lights on the Bluetooth module indicate the status of
the Bluetooth functionality.
What is customizable audio
prioritization?
Priority switching allows pilots to decide which audio sources they want to
hear through the ProFlight Series 2 and in which combination. Two options for
audio prioritization may be selected: Mute or Mix.
The Mute setting: When the switch is in the top position and an intercom
signal is detected, Bluetooth audio is muted.
The Mix setting: When the switch is in the middle position and an
intercom signal is detected, Bluetooth audio is mixed with the
intercom audio.
Type of light Indicates
Purple light flashing with power LED Discoverable or pairing, not connected to device
Blue light flashing with power LED Bluetooth ON and connecting or connected to device
OFF Bluetooth not enabled
Which Bluetooth profiles does the
ProFlight Series 2 have?
These Bluetooth profiles are oered: HFP, A2DP, AVRCP and multipoint.
BLUETOOTH® AUDIO INPUT FAQ (applicable to Bluetooth-equipped models)
What is the purpose of the
Bluetooth input?
The ProFlight Series 2 Aviation Headset's full-function Bluetooth wirelessly
connects any Bluetooth enabled external audio source, including
smartphones, tablets or EFBs, and GPS devices.
Is it legal to use a Bluetooth device
in the cockpit?
Yes. The responsibility for permitting and using devices that emit a radio
signal or that are considered personal electronic devices is with the pilot or
the owner/operator. Depending on the country, circumstance and use case,
dierent methods of qualification and approval may be required.
How do I control the volume of
the Bluetooth audio?
The user may control the volume directly on the audio source if connected
via Bluetooth or with the volume controls on the side of the ProFlight
control module.

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FAQ
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Bose ProFlight Series 2 Aviation Headset
MICROPHONE FAQ
How does customizable audio
prioritization work?
The control module has three possible user-defined prioritization states:
Mixed audio position: The intercom signal will be mixed with the
Bluetooth input signal.
Muted audio position: The Bluetooth auxiliary input signal will be muted
only when an ICS signal is present.
OFF: Bluetooth audio sources turned o for sterile cockpit operations.
Note: When a Bluetooth call is present, the audio from the call will always
mix with the ICS signal. The Bluetooth function is always disabled in the
passive mode and when the battery life indicator light is red.
What kind of microphone does the
Bose ProFlight Series 2 have?
The ProFlight Series 2 uses a noise cancelling electret microphone (often
called a high-impedance microphone), typical on most commercial aircraft.
It is optimized to reject far-field noise and improve performance with
“hot mic” systems.
POWER/BATTERY FAQ
What is the battery life of the Bose
ProFlight Series 2?
Using two AA alkaline batteries, the ProFlight Series 2 will operate for at
least 45 hours of flying in typical aircraft noise. With continuous operation
of the Bluetooth® function, battery life will be at least 25 hours. As always,
battery life varies with the type of battery, the noise environment and
features used. The headset’s battery life indicator light alerts the user when
batteries should be replaced.
Can I use rechargeable batteries? Rechargeable batteries are discouraged because your flying-time battery
life will be reduced from the 45-hour life, depending on the type of battery
chemistry used. Rechargeable batteries also alter the accuracy of the
battery status indicator light, so that when the light changes to amber, you
will have less than the usual eight hours of flying time remaining that you
can expect with non-rechargeable AA alkaline batteries.
Can I use lithium-ion batteries? Lithium-ion batteries should not be used due to their typically higher voltage.
How are the batteries installed? The two AA batteries fit lengthwise within the bottom of the control module.
The battery compartment is easily accessed by pushing down and, at the same
time, sliding the cover toward the headset. After the cover has cleared the
detent, lift the cover into a vertical position to place the batteries.
What is flexible power? Flexible power is available for headset configurations that allow aircraft power.
When disconnected, the flexible power feature lets the headset switch
seamlessly from aircraft power to battery power, so users experience no
interruption when the headset is plugged into or unplugged from a source of
power. 6 pin LEMO, 7 pin and 5 pin XLR connectors have this function, and
also feature auto-on. The user may easily change from an aircraft-powered
configuration to a battery-powered configuration using adapters available
from Bose or third-party manufacturers.

How does the auto-on feature work? Headsets that can use aircraft power (6 pin, 7 pin and 5 pin XLR) will automatically
turn on when the aircraft power is present. A switch inside the control module
battery compartment can configure this feature based on user preference.
How does the automatic shuto
feature work?
The automatic shuto feature in your ProFlight Series 2 detects when the
headset is not in use and shuts it o after several minutes to preserve battery
power. The exact time it takes to shut o varies and can range between 6 and
45 minutes of inactivity.
Can I use the ProFlight Series 2 to
listen to audio from a Bluetooth
device even when I am unplugged
from the intercom?
Yes. As long as the headset is turned on, audio can be played through the
Bluetooth connection. However, Bluetooth audio will not play when the
headset has less than two hours of battery life left in the headset (on
Bluetooth-equipped models).
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FAQ
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Bose ProFlight Series 2 Aviation Headset
How dicult is it to install a flex-powered
version, and how much would it cost?
This is dependent upon aircraft type desired plug location and overall
system setup preferences. It could take as few as 30 minutes or several
hours to install. The system consists of just six soldered wires: two audio, two
microphone, a ground and a power wire. Installing near the existing phone
and mic jacks facilitates the installation as four of the six wires can be
installed directly to the back of the existing jacks. This also allows existing
jacks to be used with conventional aviation headsets. The cost of the
installation depends on the hourly rate of the avionics professional you
select to perform the job.
Why is the installed/aircraft-powered
version of the control module the
same size as the battery-powered
control module?
Installed/Aircraft-powered versions of the ProFlight Series 2 contain a
feature we call flexible power circuitry. Headsets with the flexible power
circuitry can be seamlessly switched between aircraft power and batteries.
This allows users to retain the flexibility and additional options of using
batteries or an optional adapter cable. The adapter cable is useful if you fly
in other aircraft without an aircraft-powered connector, or if you want to
disconnect from the aircraft and enjoy a quiet flight with active noise
reduction. Because batteries take up to 70% of the control module space,
the modules were designed to have the same size.
Do the aircraft-powered versions
(6 pin, 7 pin and 5 pin XLR) of the
headset require batteries for any
of the functions?
No. These versions of the ProFlight Series 2 do not require batteries for any
function when connected to the aircraft. However, if you keep batteries in
the module, you will be able to seamlessly continue use of the headset
when it is disconnected from the aircraft power. For example, you could
make a private phone call with the Bluetooth® version of the headset by
disconnecting from the panel. It also gives you the capability to use a small
adapter cable to fly in other aircraft instead of purchasing a new cable with
dierent connectors.
Can you dim the LED lights on
the control module?
Yes. The lights can be dimmed by pressing the on/o button twice quickly.
You can reset the lights to normal mode by pressing the on/o button
twice quickly. The headset defaults to normal setting when the headset is
powered o.

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FAQ
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Bose ProFlight Series 2 Aviation Headset
Why does the power LED have three
colors, and what do they mean?
The tri-color power LED provides continuous status indication of battery
health and tells the pilot the remaining battery life at a glance. In addition,
the tri-color status LED allows pilots to extract maximum energy from a set
of AA batteries while enabling proactive battery replacements.
Power LED
Indicator color Power source Type of light Indicates
Green Aircraft Slow flashing Power ON
Green Battery Flashing Power ON and
batteries good
Amber Battery Fast flashing Power ON, but batteries
low (8 hours or less
remaining)
Red Battery Faster flashing Power ON, but batteries
very low (2 hours or less
remaining)
O None None Power OFF or
batteries depleted
PRICING FAQ
What is the price of the
ProFlight Series 2?
The ProFlight Series 2 is available directly from Bose for $1045.95 for the
Bluetooth version and $995.95 for the non-Bluetooth version. The headset
and the cables can be purchased separately.
Why does the ProFlight Series 2 cost
so much more than the competition?
The ProFlight Series 2 is the result of years of research by some of the
top engineers in the company. It is supported by the resources of a
world-class company and it incorporates proprietary technology oered
only by Bose. Bose believes the ProFlight Series 2 is the only aviation
headset that has the unique mix of features to deliver performance
worthy of the price. However, only you can decide the value. We
encourage you to compare our new headset with competitive products
and judge for yourself. We oer a 30-day flight trial to allow you to
experience the ProFlight Series 2 in your own flying environment.
Do you have a trade-in program for
existing Bose aviation headsets?
From time to time, there may be a limited-time oer for select headsets.
Please contact Bose for detailed information.
How much are the additional
cable accessories?
Cables are available for $295.95 USD ($245.95 USD for non-Bluetooth).
Can I upgrade my current
ProFlight Aviation Headset
to a ProFlight Series 2?
Yes. The original ProFlight headset can accept the ProFlight Series 2 cable.
Contact your Bose sales representative for details. Not all features of
ProFlight Series 2 will be available in this configuration. Refer to the
table below for more details.
Is it possible to use a ProFlight
Series 2 cable on the original
ProFlight Aviation Headset?
Yes. The ProFlight Series 2 cable is compatible with the original models. In
addition, it is also possible to attach a ProFlight Series 2 headset assembly
to an original ProFlight cable. Some features will change depending upon
the version of headset and cable used. See the table below:

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QUALITY/SERVICE FAQ
The Bose ProFlight Series 2 seems
very light, but that must mean it is
not durable. Can it withstand the
rigors of aviation?
The ProFlight Series 2 has been designed as a total system. It delivers
breakthrough performance and withstands the rigors of aviation use.
High-performance engineering materials were used in the design, carefully
chosen for function and durability. The headset has been tested to FAA
requirements for headsets and is certified for manufacture under TSO C139a
approval. It also has been tested to meet some additional requirements based
on our experience designing headsets for the military. The cables were designed
and tested to exceed the TSO-required 25,000-cycle flex life.
Note that the headset is not intended for use as part of a crash protection
system and has not been certified for crash protection. Dismantling,
reassembly or modification of the headset, or any part, for use in a helmet
or other crash protection system could result in severe bodily injury and
such unauthorized use will void the limited product warranty.
How can I determine if I have
the original ProFlight Aviation
Headset or ProFlight Series 2?
For the headset assembly, remove the right headband pad and provide
the serial number underneath it to customer service. For the cables,
turn on the headset, turn on tap control and tap an earbud while
observing the control module LEDs. If the LEDs blink in unison with
tapping, it is a ProFlight Series 2 cable. The original cables will not
blink in conjunction with tapping.
Which Bose ProFlight Series 2
replacement items or accessories are
available for purchase?
Bose oers the following accessories for your ProFlight Series 2:
·Additional control module cable
·Cable options include XLR 5, XLR 7*, 6 pin LEMO, Dual plug
·Side pad cushion kit (contains two cushions)
·Eartip replacement kit that contains two pair per size
·Carrying case
·Microphone windscreen
·Clothing clip
·Control module lanyard
·6 pin install to Dual G/A cable adapter
·6 pin install to U174 cable adapter
·Aircraft panel connector installation kit
·Aircraft panel installation kit cover plate
·Termination cap
* Note: If interested in purchasing the 7 pin XLR, please contact Bose directly.
ProFlight headset and cable feature matrix
Original ProFlight cable ProFlight Series 2 cable
Original ProFlight headset Original ProFlight model Updated tap control for talk-through communication
Original tap control for Original ANR
talk-through communication Thinner cable
Original ANR Enhanced mic windscreen
Original mic setup positioning (wings)
Bluetooth®-only version Bluetooth/Non-Bluetooth versions
Updated cable clip
ProFlight Series 2 headset Original tap control for Updated tap control for talk-through communication
talk-through communication Revised ANR modes
Revised ANR modes Thinner cable
Original mic setup Enhanced mic windscreen positioning (wings)
Bluetooth-only controller Bluetooth/Non-Bluetooth versions
Updated cable clip

The headset seems fragile. What sort
of wear should I expect from the
components?
The ProFlight Series 2 has been designed to withstand the rigors of
aviation use. The high-performance engineering materials used in the
design were carefully chosen for function and durability. Side pad
cushions, microphone windscreen, earbud tips and headband cushion
are all consumable items and should be replaced periodically. We
suggest that you replace the side pad and microphone windscreen
yearly or more often if excess wear is noticed.
Can I interchange the control modules
from my A20 with the ProFlight Series 2?
No. The control module can only be used for the product that it is built for.
Can I use any of the parts or accessories
from other Bose products Headset X
(cushions, mic windscreens, etc.) with
the ProFlight Series 2?
No. Although it may be possible to force some of the cushions and parts
onto the ProFlight Series 2, they have not been designed or implemented
for this product. You should only use parts designed for use on the
ProFlight headset.
What does the five-year
warranty cover?
The ProFlight Series 2 warranty is five years from the date of purchase,
covering defects in material and workmanship with parts, labor and one-way
return shipping from Bose, all provided at no charge to the customer.
Bose maintains a dedicated FAA-Certified Repair Station to support all
versions of Bose aviation headsets.
I noticed that the ProFlight Series
2 now oers a 5-year warranty
term. Will the warranty term for
my original ProFlight change?
Yes, the warranty term extension from three years to five years is eective for
both the original ProFlight as well as ProFlight Series 2.
How do you clean eartips and
mesh of earbuds?
This deep-cleaning method is to be used to resolve some audio issues.
To deep clean the earbuds, follow these steps:
1. Remove the tips from the earbuds.
2. Apply a small amount of hydrogen peroxide (3% concentration only) to the
mesh surface of the earbud using a soft cloth or tissue (be careful not to
allow excess liquid to enter the open port on the earbud).
3. Let sit for 5 minutes to allow wax to soften .
4. Wet a soft-bristled toothbrush with hydrogen peroxide
(3% concentration only).
5. Gently scrub the mesh surface to loosen and remove the wax without
allowing excess hydrogen peroxide to enter the open port on the earbud.
6. After mesh surface is clean, gently shake out any excess liquid and debris.
7. Dry earbud with a soft cloth.
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AVIATION
FAQ
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Bose ProFlight Series 2 Aviation Headset
For internal and reseller distribution only - Bose confidential

How should I perform
preventive maintenance?
To clean the eartips, follow these steps:
1 Remove the tips from the earbuds.
2. Wash eartips with mild soap and rinse with water.
3. Dry eartips with a soft cloth.
4. Allow the eartips to completely dry before reattaching
them to the earbuds.
To clean the earbuds, follow these steps:
1. Remove the tips from the earbuds.
2. Lightly brush mesh screens with a soft dry cloth (be careful not to
push cerumen (earwax) into the mesh surface or porthole).
Note: It is recommended that protective gloves be worn when using
hydrogen peroxide.
13
AVIATION
FAQ
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Bose ProFlight Series 2 Aviation Headset
For internal and reseller distribution only - Bose confidential
CERTIFICATION/TSO FAQ
What is TSO, and why is it important? A Technical Standard Order (TSO) is a minimum performance standard for
specified materials, parts and appliances used on civil aircraft. When a
company is authorized to manufacture a material, part or appliance to a TSO
standard, this is referred to as TSO authorization. When a company receives a
TSO authorization, it is assured that the product meets these minimums in
both design and production. Bose Corporation meets all, and exceeds many,
TSO requirements. Receiving a TSO authorization is not an approval to install
and use the authorized article in the aircraft.
Have you tested ProFlight Series 2
with dierent pressure/O2masks?
Yes. Several dierent pressure masks have been tested and used with the
headset. It is possible to don the headset and use the headset with the
pressure masks.
How do I prove to a check pilot that the
product is TSO certified?
Markings on or inside the control module and under the side pad of the headset
indicate TSO certification.
What is the Bose position on the
InFO document from the FAA on
noise cancelling headsets?
Bose supports the recommendation in the InFO memo that operators should
thoroughly evaluate headsets for performance in their own aircraft. Each aircraft
type has unique acoustic qualities, and Bose strongly believes the best way to
evaluate performance is through real-world testing.
The ProFlight Series 2 meets or exceeds all FAA TSO requirements for pilot
headsets and has been thoroughly tested in many dierent aircraft. Civilian and
military pilots have accumulated millions of flight hours during the 25 plus years
our products have been in the field.
Do I have to get special permission
to use this headset on my airline?
Is an STC required?
The requirements put in place by airlines vary widely. Some allow the pilots to
use a headset of their choice, while others restrict use to either a list of products
or only certain products.

14
AVIATION
FAQ
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Bose ProFlight Series 2 Aviation Headset
For internal and reseller distribution only - Bose confidential
Is ProFlight Series 2
Airbus/Boeing/Embraer/etc.
certified? Why or why not?
The term “certified” can take on many meanings. It is best to review with the
appropriate OEM manager and business development manager for the aircraft
or airline in question to get the latest status. Keep in mind, the headset is TSO
certified and has been tested on many dierent aircraft. Approval to use the
headset on any specific aircraft can vary by the type of operation the headset
will be used in, by country and even by the aircraft certification organizations.
Depending on your needs, Bose can assist in getting the appropriate approvals
you may require.
How can you be sure that the
pilot always has his own
earbuds available?
It’s a good idea to have extra sets of earbuds available to pilots or stored in
aircraft. If extra tips are stored on aircraft where multiple pilots will use the
headset, it is good to plan on making medium tips available as this size
should fit the majority of the pilot population.
Why is the down cable so thick?
Can’t you make it more pliable?
You asked, and we listened. The ProFlight Series 2 cable is thinner and more
flexible than the original ProFlight cable.
Does it have an audio output limiter
like Sennheiser’s “peak level
protection”? Why not?
The headset is required by TSO to output up to 110dB. All aviation headsets
we have tested to date provide this level of output.
How is the ear pressure equalization,
including while used through several
flight phases?
These earbuds don’t create a strong seal and in fact, even with a
less-than-perfect fit, the earbuds provide great noise reduction.
How does the ProFlight Series 2
compare to the A20 Aviation
Headset in terms of noise reduction?
The ProFlight Series 2 does not have as much total noise reduction
as the A20 Aviation Headset.
Is the Bose A20 Aviation Headset
still available?
Yes. The ProFlight Series 2 did not replace the A20 Aviation Headset. It is
designed to meet the unique needs of pilots and crew who fly pressurized and
crewed aircraft, which are typically less noisy.
BOSE A20 AVIATION HEADSET QUESTIONS

The ProFlight Series 2 is our most advanced aviation headset yet.
Compared to the Bose A20 Aviation Headset, the ProFlight Series 2 has:
• A new level of comfort achieved through choice of materials, redistribution
of weight throughout the headset and a purposeful in-ear design.
• Digital active noise reduction with multiple modes of active noise cancellation.
• A microphone and cable that are side-swappable without tools. Storage
in a smaller carrying case.
ProFlight Series 2 compared to Bose Aviation Headset Series I and II:
• Weighs significantly less – 4.5 ounces (128 grams) on head and 9.7 ounces
(275 grams) total vs. 18 ounces (510 grams) and is designed for greater
comfort, with low clamping force (275 grams of clamping force
on average heads).
• At least 45 hours of battery life from two AA batteries (Series I had a large
NICAD system or large plug installation for power; Series II had a six AA
battery pack or small dime-size installation).
• Storage in a more compact space/bag.
• Less total noise cancellation as compared to the Bose A20.
2015 A20 Aviation Headset added features (note that these features are not
present in all versions):
• A2DP: streaming Bluetooth® audio.
• Auto-on (select models using aircraft power).
• High-performance microphone.
• Coil cord option.
How do I know which previous
headset version I have?
Aviation Headset Series I has the on/o switch and volume control located
on the separate control module. Some Series I headsets have clear windows
on the ear cups allowing a view of the ear cup electronics.
Aviation Headset Series II headsets are distinguished by the dual volume
controls and on/o switch located on the headset itself. This is located
behind the left arm board.
Aviation Headset X can be identified by the magnesium headband and
domed, smooth ear cups with a single port in the middle of the cups. The
modules (portable and installed) have a power on/o button and dual
volume controls.
The A20 Aviation Headset can be identified by looking for the Mute/Mix/O
switch position labels on the control module. Those labels will indicate that
the A20 headset is the most current version.
The ear cups have two separate ports on each ear cup.
15
AVIATION
FAQ
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Bose ProFlight Series 2 Aviation Headset
For internal and reseller distribution only - Bose confidential
The Bluetooth® word mark is a registered trademark owned by Bluetooth SIG, Inc. and any use of such mark by Bose Corporation is under license.
What are the advantages
of the ProFlight Series 2 vs. the
A20 Aviation Headset (or the
Bose Aviation Headset X,
Aviation Headset Series I,
Aviation Headset Series II, or
pre-2015 A20 Aviation Headset)?