AEM AA21-400 User manual

SPECIAL NOTICE
This product is now licensed to Anodyne Electronics Manufacturing (AEM) from Northern
Airborne Technology (NAT)/Cobham Aerospace Communications (CAC). AEM is responsible
for all matters related to this product, including sales, support and repair services.
Please note the transition to convert product manuals and supporting documentation is an
ongoing process and is being addressed on an ‘as needed’ basis.
All references to NAT product part numbers (and associated images) are equivalent to AEM
product part numbers.
Contact info:
Anodyne Electronics Manufacturing Corp.
#15-1925 Kirschner Road
Kelowna B.C. Canada
V1Y 4N7
Email: [email protected]
Toll Free: 1-888-763-1088
Phone: [phone]
Fax: [phone]
www.aem-corp.com

CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
INSTALLATION AND OPERATION MANUAL
REV 5.00 November 9, 2016
Anodyne Electronics Manufacturing Corp.
15-1925 Kirschner Road
Kelowna, BC, Canada.
V1Y 4N7
Telephone [phone]
Facsimile [phone]
Website: www.aem-corp.com
© 2016 Anodyne Electronics Manufacturing Corp. (AEM),
All Rights Reserved
SM34
AA21
-400
Cabin PA System

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Installation and Operation Manual Page ii
ENG-FORM: 820-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
COPYRIGHT STATEMENT
© 2016 Anodyne Electronics Manufacturing Corp. (AEM), All Rights Reserved
This publication is the property of AEM and is protected by Canadian copyright laws.
No part of this document may be reproduced or transmitted in any form or by any means
including electronic, mechanical, photocopying, recording, or otherwise, without the prior
written permission of AEM.

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Installation and Operation Manual Page iii
ENG-FORM: 820-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Prepared By:
Checked By:
Approved By:
The status of this installation and operation manual is controlled by the revision shown on the title page.
The status of each section is controlled by revision shown in the footer of each page. All revisions affecting
sections of this manual have been incorporated.
AEM MANUAL REVISIONS
Section
Revision Number
Revision Description
Date
All
Rev: 5.00
ECO1054: AEM Rebranding
Nov 9, 2016
Tony Pearson
Designer
Dec 6, 2016
Loen Clement
Designer
Dec 06, 2016
Tom Betzelt
Product Support Manager
Dec 7, 2016
Todd Blackstock
R&D Manager
Dec 9/16

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Installation and Operation Manual Page iv
ENG-FORM: 820-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Table of Contents
Section Title Page
1.0 Description
1.1 Introduction 1-1
1.2 Purpose of Equipment 1-1
1.3 Features 1-1
1.4 Specifications 1-2
1.4.1 Electrical Specifications 1-2
1.4.2 Physical Specifications 1-4
1.4.3 Environmental Specifications 1-4
1.5 Accessories Required But Not Supplied 1-5
2.0 Installation
2.1 Introduction 2-1
2.2 Unpacking and Inspection 2-1
2.3 Installation Procedures 2-1
2.3.1 Note to Installers 2-1
2.3.2 Warnings 2-1
2.3.3 Cautions 2-2
2.3.4 Cabling and Wiring 2-2
2.3.5 Post-Installation Checks 2-2
2.3.6 Adjustments and Connections 2-3
2.4 Continued Airworthiness 2-4
2.5 Installation Drawings 2-5
3.0 Operation
3.1 Introduction 3-1
3.2 Operation Specifics 3-1
3.3 Techniques of Voice Transmission 3-1
3.4 Basic Operation 3-1
3.4.1 Power Up 3-1
3.4.2 Input Function Selection 3-2
3.4.3 Volume Control 3-2
3.4.4 Mode Switches 3-3
3.4.5 Remote Power Switch 3-3

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 1-1
ENG-FORM: 800-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Section 1.0 Description
1.1 Introduction
This manual contains information on the AA21-400 Cabin PA System.
Information in this section consists of purpose of equipment, features and specifications.
1.2 Purpose of Equipment
The AA21-400 Cabin PA control unit is designed to provide centralized control for an aircraft’s internal and
external PA systems. The design is contained in one panel-mounted unit, with an illuminated faceplate. All
audio and keylines are interfaced to existing aircraft audio systems. Front panel switches provide selection
of the various operational modes of the AA21 and a potentiometer provides output volume control.
1.3 Features
The AA21-400 provides selection and control of internal and/or external PA system(s) installed in an aircraft.
The integrated 25 W speaker driver circuit is designed to drive one 8 speaker arrangement for internal
paging. The AA21-400 also provides a low-level audio signal output that drives the input on a remote
mounted power amplifier. The output is designed to drive the PA110/220 or PA250/700 series amplifiers.
The AA21-400 provides generation of wail and yelp siren audio on the low level output when selected on
the front panel.
A ‘+3 dB’ function allows the output level of the system to be varied by 3 dB. When the input control line is
grounded, the output is reduced by approximately 3 dB, and removing the ground returns the system to full
output.
Thermal protection is designed into the intermediate and final stage amplifiers to protect the unit during
very hot or extended high power operating conditions.
Four front panel switches provide selection of the various operational modes of the AA21-400 as described
in Section 3 of this manual (Operation).

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 1-2
ENG-FORM: 800-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
1.4 Specifications
1.4.1 Electrical Specifications
Power Supply Linear DC (with reverse & over voltage protection):
Normal: +27.5 Vdc nominal.
+22.0 Vdc minimum.
+30.3 Vdc maximum.
+18.0 Vdc emergency.
Input Current: 2.3Amax.fullspeakerpower(35W)@+27.5Vdc.
2.9 A max (35 W) with 0.40 A load on Switched Power Output.
0.40 A idle @ +27.5 Vdc.
Backlighting: 150 mA max @ +27.5 Vdc.
Input Signals
Microphone: 150 Ohm amplified dynamic.
250 mVrms rated input level.
ALC Automatic level controlled for maximum intelligibility without
distortion starts @ 130 mVrms.
Impedance 130 Ohm 10%.
Music: Only one of Radio (Receive) or CD may be enabled at a time.
Radio (Receive) 2.5 Vrms into 1k 10%.
CD 1.0 Vrms into 11k 10%.
PA key: Active low. Max. current source 15 mA.
+3dB key: Active open, isolated through optical relay. Max. current source 13
mA. Reduces all audio, except sidetone, by 3 dB when grounded.
The output will be reduced 2 to 3 dB if operating above 25 W on
speaker output, or above 6.5 Vrms on PA output.
Input to Input Crosstalk: -40 dB from rated output.

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 1-3
ENG-FORM: 800-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Output Signals
Speaker: Impedance and short circuit protected.
10% THD 20W single toneinto 8@50%dutycycle.Continuous.
20Wvoice/musicinto8@100%dutycycle.Continuous.
Note: Distortion is 3% THD at 10% of continuous output power
rating.
> 10% THD 35Wmax.into8with2.5VrmsintoRadio(Receive)input.
Non-continuous (short term).
Audio bandwidth: Mic input: 3dB roll-offfrom350Hzto3kHz
Radio(Receive)/CDinput: 3dB roll-offfrom350Hzto6kHz
PA: Selectable by internal jumper for either
PA110/220 (6.5Vrms10%into600)or
PA250/700(0.5Vrms10%into600)forratedoutput.
Distortion: 3% THD at rated output.
Audio bandwidth: Mic input: 3dB roll-offfrom350Hzto3kHz
Radio(Receive)/CDinput: 3dB roll-offfrom350Hzto6kHz
Siren: Only available on PA output (735 to 1620 Hz). Yelp and wail
modes with adjustable rates. Siren level control provided for
yelp/wail by one internal trimpot.
Sidetone: Adjustable 0-100 mW into 600 with 10% THD
Audio bandwidth: 3dB roll-offfrom350Hzto3kHz
Input to Output -50 dB from rated output.
Crosstalk:
Audio Noise Level: -50 dB from rated output.
(without signal)
Switched Power: +27.5 Vdc @ 0.40 Amps max. Over current protected.
Temperature Sensor The unit contains a temperature sensor IC which when triggered
reduces the input signals by 3 dB.
The IC threshold is set to approximately 130C.
Annunciator Power On (illuminates green when active)

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 1-4
ENG-FORM: 800-0100.DOTX
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1.4.2 Physical Specifications
Height 1.11 0.03” (28.1 0.8 mm)
Depth 6.53 0.03” (165.9 0.8 mm) behind panel (including connector).
Width 4.96 0.03” (126.0 0.8 mm) behind panel.
5.75 0.03” (146.1 0.8 mm) in front of panel.
Weight 1.40 0.07 lbs. (0.64 0.03 kg)
Mounting Std. Dzus Mounting (4 fasteners)
Faceplate Engravedacrylicedge lit panel, with28Vdc backlighting.
Material/Finish Chassis & cover: 5052-H32 brushed aluminum with chromate
conversion finish.
Heat sinks: de-burred 6063-T6 aluminum with chromate conversion finish.
Connector Male filtered 25 pin D-subminiature with Positronics V5 locking
tabs.
1.4.3 Environmental Specifications
Operating Temp -30C to +55C
Survival Temp -55C to +85C
Humidity > 95%
Altitude 25,000 ft.
DO-160D Env. Cat. B4-BAB[(SBM)(UF)]XXXXXXZBABB[TTX]MXXXX
TSO Compliance TSO-C50c, RTCA DO170 Class II
(Applicable to units Serial # 1200 and up)

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 1-5
ENG-FORM: 800-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
1.5 Accessories Required But Not Supplied
Installation kit p/n AA21-400-IKC (crimp) or AA21-400-IKS (solder) is required to complete the installation.
They consist of the following:
AA21-400-IKC (crimp) Part #:D25SV-IKC
Quantity Description Part #
1 D-min 25 Socket housing 20-21-025
25 MS Crimp Socket 20-26-901
1 25 Pin JVL Hood/Locklever 20-29-250
AA21-400-IKS (solder) Part #:D25SV-IKS
Quantity Description Part #
1 D-min 25 Socket Solder Cup 20-20-025
1 25 pin JVL Hood/Locklever 20-29-250
End of Section 1.0

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 2-1
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Section 2.0 Installation
2.1 Introduction
Information in this section consists of: unpacking and inspection procedures, installation procedures, post-
installation checks, and installation drawings.
2.2 Unpacking and Inspection
Unpack the equipment carefully and locate the warranty card. Inspect the unit visually for damage due to
shipping and report all such claims immediately to the carrier involved. Note that each unit should have the
following:
- AA21-400 Cabin PA System
- Warranty Card
- Release certification
Verify that all items are present before proceeding and report any shortage immediately to your supplier.
Complete the warranty card information and send it to AEM when the installation is complete. If you fail to
complete the warranty card, the warranty will be activated on date of shipment from AEM.
2.3 Installation Procedures
2.3.1 Note to Installers
The AA21-400 is intended for use as a cockpit-mounted control for an internal or external aircraft PA
system, where such a system is not installed to fulfill the airworthiness requirements for the aircraft or an
operating rule.
The AA21-400 is certified to RTCA DO-160D Section 20 (RF Susceptibility) Category T, for installation in a
well-protected electromagnetic environment such as an enclosed avionics bay in an all-metallic aircraft.
The equipment shall therefore not be installed to satisfy the requirement of FAR 25.1423 for a Public
Address system.
2.3.2 Warnings
Never ground any audio output line from the AA21-400 or permanent damage may result. Always check ADF
and compass calibration after installing external speakers or PA amplifiers. Significant single cycle errors may
be caused by the concentration of steel and magnetic material. Do not bundle any lines from these units with
transmitter coax lines. Do not bundle anylines from this unit with 400 Hz synchro wiring, or AC power lines.

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 2-2
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
2.3.3 Cautions
Use shielded cable exactly as shown and ground as indicated. All audio installations can be severely
degraded by incorrect wiring and shielding. Unusual buzzes, hums or other background audio are
symptomatic of multiple grounds, or noisy external systems such as blowers or pumps sharing wiring with
the audio system. Never operate any of these units below their 8 rated impedance.
2.3.4 Cabling and Wiring
All unshielded wire shall be selected in accordance with AC43.13-1B Change 1, Paragraphs 11-76 through
11-78. Wire types should be to MIL-W-22759 as specified in AC43.13-1B Change 1, Paragraphs 11-85,
11-86, and listed in Table 11-11. For shielded wire applications, use Tefzel MIL-C-27500 shielded wire
with solder sleeves (for shield terminations) to make the most compact and easily terminated interconnect.
Follow the wiring diagrams in Section 2.6 as required.
Allow 3 inches from the endof the wire to the shield termination to allow the hood to be easilyinstalled. Note that the
hood is a ‘clamshell’ hood, and is installed after the wiring is complete.
All wiring should be at least 22 AWG, except power and ground lines, which should be at least 20 AWG.
Ensure that all ground connections are clean and well secured. To prevent system failure or inadequate
equipment protection, power must be supplied from a separate breaker or fuse and not connected to any
other source.
2.3.5 Post-Installation Checks
2.3.5.1 Voltage/resistance checks
Do not attach the AA21-400 until the following conditions are met.
Check the following:
a) P101 pins <1> <2> and <3> for +28 Vdc relative to ground.
b) P101 pins <14>, <15> and <16> for continuity to ground (below 0.5 ).
c) P101pins<18>,and <22> (withswitchesopen)forinfiniteresistancetoground(>10M).
d) P101 pin <5> to pin <7> for 4 –6 (typical).
2.3.5.2 Power On checks
WARNING
The AA21-400 is a high power device, capable of producing tones at very high
volume levels. Ensure that all personnel are well clear of the aircraft prior to
keying the siren or PA. Failure to adhere to this warning could cause injury to
personnel and/or damage to equipment. DO NOT conduct the following tests
inside an enclosed area (i.e. a hangar.)

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 2-3
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
a) Install the Cabin PA system and remote amplifier(s) and speaker(s) as applicable, and then power
up the ship’s systems. Turn on all of the radios and other accessories required for this system.
Check that the POWER ON LED on the AA21-400 illuminates when the power switch is selected
to ON.
b) From the front panel switches, select PA and EXT. Keythesiren using thefront panel switch and remote
Siren key as described in Section 3.4.4.1. The siren should sound on the external PA speakers, and the
level should be at maximum volume(the VOL control fullycw). If the sirenrate needs adjustmentuse the
corresponding trimpot on the top of the AA21-400. Refer to section 2.3.6.1 for details.
c) Configure the audio system as required to allow connection of the pilot's mic to the PA and key the
cyclic switch for transmit. The mic audio should be heard on the PA speakers. Adjust the front
panel level control for the desired volume. Set the front panel switch to RADIO, and check for
correct radio operation and note what volume settings will produce a suitable external paging level.
USE CARE TO AVOID FEEDBACK INTO THE MICROPHONE!
Note: A faint audio signal may be heard at the speaker (even when the system is not paging) due to the
very high gain of this system and stray coupling in the wiring. It should not be audible in flight.
2.3.6 Adjustments and Connections
The unit ships from the factory with all internal adjustments set to the normal test levels. Once installed in
the aircraft, it may be desirable to change some of these settings to best suit the local operating
environment. The internal adjustments are accessible through holes located on the top of the unit.
Sweep Rate
Adjustments
Configuration
Jumpers
Level Adjustments

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 2-4
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
2.3.6.1 Sweep Rate
The sweep rates for the wail and yelp modes of the siren are adjustable using the appropriately marked
pots. The yelp rate is adjustable from 48 cycles/min to 300 cycles/min, and the wail rate is adjustable from
5 cycles/min to 200 cycles/min. Rotating a pot cw will increase the sweep rate, and ccw will decrease it.
2.3.6.2 Level Adjustments
The sidetone, mic, siren, receive, and internal speaker levels are all adjustable by rotating the appropriate
pots cw to increase the level, and ccw to decrease it. The external speaker level is adjustable by rotating
the appropriate pot cw to decrease the level, and ccw to increase it.
The range adjustments for the potentiometers are given below:
External speaker level: (60dB dynamic range)
Internal speaker level: (90dB dynamic range)
S/T level: (100dB dynamic range)
Mic level: (60dB dynamic range)
Receive level: (70dB dynamic range)
Siren level: (70dB dynamic range)
2.3.6.3 Configuration Jumpers
The configuration options for the AA21-400 can be selected by installing jumpers as shown below:
RX/CD: Pins 1-2 : Radio (Receive) input enabled,
CD input disabled
Pins 2-3 : CD input enabled,
Radio (Receive) input disabled
EXT SPKR LEVEL : Installed : 500 mVrms output level
Not installed : 6.5 Vrms output level
2.4 Continued Airworthiness
Maintenance of the AA21-400 is ‘on condition’ only. Periodic maintenance of this product is not required.

AA21-400 Cabin PA System
SM34 Installation and Operation Manual
Build Standard: 5.00 Nov 09, 2016 Page 2-5
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
2.5 Installation Drawings
DRAWING
REV.
DESCRIPTION
TYPE
SERIAL #
AA21-400-403-0
1.02
Cabin PA System
Interconnect
All
AA21-400-405-0
1.01
Cabin PA System
Connector Map
All
AA21-400-521-0
1.21
Cabin PA System
Environmental Qual Form
1200 and up
AA21-400-905-0
1.20
PA Controller
Faceplate
066274 and up
AA21-400-905-0
1.10
PA Controller
Faceplate
Up to 066274
AA21-400-922-0
1.30
Cabin PA System
Mech. Installation
066274 and up
AA21-400-922-0
1.20
Cabin PA System
Mech. Installation
042313 to 066273
AA21-400-922-0
1.11
Cabin PA System
Mech. Installation
1200 to 042312
AA21-400-922-0
1.00
Cabin PA System
Mech. Installation
1015 –1199
Section 2.0 ends following above documents

SHEET:
UNLESS OTHERWISE SPECIFIED:
SCALE:
REVISION
PART No.:
A
PAPER SIZE:
TITLE:
NAME DATE
CHECKED
DRAWN
FINISH:
MATERIAL:
DIMENSIONS ARE IN INCHES [MM]
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
ANODYNE ELECTRONICS MANUFACTURING.
ANY REPRODUCTION IN PART OR AS A WHOLE
WITHOUT THE WRITTEN PERMISSION OF
ANODYNE ELECTRONICS MANUFACTURING IS
PROHIBITED.
CAGE CODE
CONFIDENTIAL AND PROPRIETARY
APPROVED
L9015
ANODYNE
ELECTRONICS
MANUFACTURINGCORP.
KELOWNA BC CANADA
(250)-763-1088
WWW.AEM-CORP.COM
DO NOT SCALE DRAWING
TOLERANCES:
FRACTIONAL_____________
ANGULAR_______________
TWO DECIMAL PLACE____
THREE DECIMAL PLACE___
±0.0625"
±0.5°
±0.010"
±0.005"
DRAWING No.:
AA21-400 1.02
N/A 1 of 1
SRK NOV 9/99
N/A
N/A
CABIN PA SYSTEM
INTERCONNECT
403-0
1.01 DOCCR02739 - ADDED NOTE B. FEB 5/09 TAT
1.02 ECO1054 - UPDATED TO AEM TITLEBLOCK. OCT 14/16 LAC
Oct 21, 2016
Oct 26/16

SHEET:
UNLESS OTHERWISE SPECIFIED:
SCALE:
REVISION
PART No.:
A
PAPER SIZE:
TITLE:
NAME DATE
CHECKED
DRAWN
FINISH:
MATERIAL:
DIMENSIONS ARE IN INCHES [MM]
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
ANODYNE ELECTRONICS MANUFACTURING.
ANY REPRODUCTION IN PART OR AS A WHOLE
WITHOUT THE WRITTEN PERMISSION OF
ANODYNE ELECTRONICS MANUFACTURING IS
PROHIBITED.
CAGE CODE
CONFIDENTIAL AND PROPRIETARY
APPROVED
L9015
ANODYNE
ELECTRONICS
MANUFACTURINGCORP.
KELOWNA BC CANADA
(250)-763-1088
WWW.AEM-CORP.COM
DO NOT SCALE DRAWING
TOLERANCES:
FRACTIONAL_____________
ANGULAR_______________
TWO DECIMAL PLACE____
THREE DECIMAL PLACE___
±0.0625"
±0.5°
±0.010"
±0.005"
DRAWING No.:
AA21-400 1.01
N/A 1 of 1
SRK
SEP 10/99
N/A
N/A
CABIN PA SYSTEM
CONNECTOR MAP
405-0
1.01 ECO1054 - UPDATED TO AEM TITLEBLOCK. OCT 14/16 LAC
Oct 21, 2016
Oct 26/16

ENVIRONMENTAL QUALIFICATION FORM
Description:
Cabin PA System
Document:
AA21-400-521-0
Part #:
AA21-4xx
TSO #:
C50c
Manufacturer’s Specification and/or Other Applicable Specification:
RTCA DO-160
Manufacturer:
Anodyne Electronics Manufacturing Corp.
Address:
#15 - 1925 Kirschner Rd., Kelowna, BC, Canada. V1Y 4N7
DO-160 Rev:
D
Prepared By:
Checked By:
Approved By:
Rev: 1.21 Oct 17, 2016 Page 1 of 3
ENG-FORM: 521-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Conditions Section Description of Conducted Tests
Temperature and Altitude
Low Temperature
High Temperature
Altitude
4.0
4.5.1
4.5.2 & 4.5.3
4.6.1
Equipment tested
to Category B4
-30C Operating Low Temperature
+55C Operating High Temperature
+70C Short
-
term Operating High Temperature
See Remark (2)
Temperature Variation
5.0
Equipment tested to Category B
Humidity
6.0
Equipment tested to Category A
Shock
Operational
Crash Safety
7.0
7.2
7.3
Equipment tested to Category B
Test Procedure 1, Alternate Test Procedure
(Impulse)
Test Procedure 2 (Sustained), Unknown or
Random orientation in aircraft.
Vibration
8.0
Equipment tested to categories
SBM, UF
Explosion Proofness
9.0
Equipment identified as Category X no test
required
Waterproofness
10.0
Equipment identified as Category X no test
required
Tony Pearson
Designer
Oct 17, 2016
Steve Kempf
Designer
Oct 21/16
Todd Blackstock
R&D Manager
Oct 26/16

AA21-4xx Environmental Qualification Form
Rev: 1.21 Oct 17, 2016 Page 2 of 3
ENG-FORM: 521-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Conditions Section Description of Conducted Tests
Fluids Susceptibility
11.0
Equipment identified as Category X no test
required
Sand and Dust
12.0
Equipment identified as Category X no test
required
Fungus Resistance
13.0
Equipment identified as Category X no test
required
Salt Spray
14.0
Equipment identified as Category X no test
required
Magnetic Effect
15.0
Equipment is Class Z
Power input
16.0
Equipment tested to Category B
Voltage Spike
17.0
Equipment tested to Category A
Audio Frequency Susceptibility
18.0
Equipment tested to Category B
Induced Signal Susceptibility
19.0
Equipment tested to Category B
Radio Frequency Susceptibility
20.0
Equipment tested to Category TTX
Radio Frequency Emission
21.0
Equipment tested to Category M
Lightning Induced Transient
Susceptibility
22.0
Equipment identified as
Category X no test
required
Lightning Direct Effects test
23.0
Equipment identified as Category X no test
required
Icing
24.0
Equipment identified as Category X no test
required
Electrostatic Discharge (ESD)
25.0
Equipment identified as
Category X no test
required

AA21-4xx Environmental Qualification Form
Rev: 1.21 Oct 17, 2016 Page 3 of 3
ENG-FORM: 521-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
REMARKS
(1) Tests were conducted at Northern Airborne Technology Ltd.
(2) AA21-401 was tested to 55,000 ft.
End of Environmental Qualification Form