BRUMBY 610 Owner's manual

PILOT’S OPERATING HANDBOOK Version 4.0
Model: BRUMBY 610 High Wing Rotax Engine
Model No: Brumby R610
Publication No.: BAA F2746-12H
Aircraft Registration Number
Aircraft Serial Number
Approved _______________________ Date
For Brumby Aircraft Australia

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FOREWORD
This Pilot’s Operating Handbook contains the airworthiness limitations and essential operating
data for this aircraft.
Special operations requiring additional limitations and instructions are listed in Section 10 -
“SUPPLEMENTS”. These supplements and instructions are included in Section 10 of this
Handbook and shall be consulted before undertaking such operations.
This Handbook shall be carried in the aircraft on all flights. The pilot in command shall comply
with all requirements, procedures and limitations in this handbook with respect to the operation
of the aircraft.
Amendments will be approved by the manufacturer and will take the form of replacement
pages, identified by the appropriate amendment number at the bottom of each page. It is the
owner’s responsibility to incorporate in the Handbook all such amendments, and to enter the
date of incorporation in the Amendment Record Sheet.
No entries or amendments may be made to this Handbook except in the manner and by persons
authorized by the manufacturer.
A copy of the pilot operating handbook and maintenance manual is supplied with each aircraft
on delivery. Amendments will be sent if and when required.
Brumby Aircraft Australia

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FEEDBACK FORM
This form is for the owner / operator to provide notification to Brumby Aircraft Australia about
issues and anomalies that are identified during the operation or maintenance of the aircraft.
Return this form to:
Quality Assurance Manager Brumby Aircraft Australia, 112 Airport Road Cowra Australia 2794 or
email to [email protected] attention Quality Assurance Manager
Table 1. Feedback Form
Aircraft Serial No.
Registration No.
Date of Maintenance
Name of authorised maintenance person
Location of maintenance
Type of maintenance
Comments

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Table of Contents
1. INTRODUCTION .....................................................................................................................................10
1.1 ASTM STANDARDS .........................................................................................................................................10
1.2 MANUFACTURER AND CONTACT INFORMATION ..................................................................................................... 10
1.3 DATA LOCATION AND CONTACT INFORMATION .....................................................................................................10
2. GENERAL INFORMATION .......................................................................................................................11
2.1 SUMMARY OF PERFORMANCE ...........................................................................................................................11
2.1 HANDBOOK EXPLANATION .........................................................................................................................12
2.1.1 Definitions.......................................................................................................................................13
2.2 GENERAL DESCRIPTION .............................................................................................................................13
2.2.1 Aircraft ............................................................................................................................................13
2.2.2 Engine ............................................................................................................................................. 13
2.3 SYMBOLS,ABBREVIATIONS AND TERMINOLOGY .............................................................................................14
2.3.1 General Symbols and Abbreviations ...............................................................................................14
2.3.2 General Airspeed Terminology and Symbols ..................................................................................15
2.3.3 Meteorological Terminology...........................................................................................................16
2.3.4 Aircraft Performance Terminology ................................................................................................. 16
2.3.5 Weight and Balance Terminology...................................................................................................16
3LIMITATIONS .........................................................................................................................................17
3.1 GENERAL................................................................................................................................................ 17
3.2 AIRSPEED LIMITATIONS (V SPEEDS).............................................................................................................17
3.3 AIRSPEED INDICATOR SPEED RANGE MARKINGS.............................................................................................17
3.4 ENGINE LIMITATIONS ................................................................................................................................18
3.4.1 Fuel grade ....................................................................................................................................... 19
3.4.2 Engine coolant ................................................................................................................................19
3.4.3 Propeller..........................................................................................................................................19
3.5 ENGINE INSTRUMENT MARKINGS ................................................................................................................19
3.6 WEIGHT AND CENTRE OF GRAVITY LIMITS.....................................................................................................20
3.6.2 Centre of Gravity Limits.......................................................................................................................20
3.7 MANOEUVRE LIMITS.................................................................................................................................20
3.8 LIMITS TO THE KINDS OF OPERATIONS ..........................................................................................................20
3.9 PLACARDS...............................................................................................................................................20
3.10 3.13 FUEL LIMITATIONS............................................................................................................................ 21
3.11 RANGE...................................................................................................................................................21
3.12 CROSS WIND LIMITS.................................................................................................................................21
4. EMERGENCY PROCEDURES.........................................................................................................................21
4.1 GENERAL INFORMATION ...................................................................................................................................21
4.2 AIRSPEEDS FOR EMERGENCY OPERATIONS............................................................................................................22
4.2.1Engine Failure After Takeoff ................................................................................................................ 22
4.2.2Maximum Operating Manoeuvring Speed Vo ..................................................................................... 22
4.2.3Maximum Design Manoeuvre Speed VA..............................................................................................22
4.2.4Precautionary Landing with Engine Power ..........................................................................................22
4.2.5Precautionary Landing without Engine Power.....................................................................................22
4.3 EMERGENCY PROCEDURES CHECKLIST.................................................................................................................. 22

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4.3.1Engine Failures.....................................................................................................................................22
4.3.2 Forced Landings .................................................................................................................................. 23
4.3.3 Precautionary Landings with engine power........................................................................................23
4.3.4 Inadvertent icing encounter (airframe icing) ...................................................................................... 24
4.3.5 Fires.....................................................................................................................................................24
4.3.5.1 During Start on Ground.................................................................................................................... 24
4.3.5.2 Engine Fire in flight or on take off....................................................................................................24
4.3.5.3 Electrical fire in flight ....................................................................................................................... 25
4.3.5.4 Smoke/Fume Evacuation ................................................................................................................. 25
4.3.6 Landing with a Flat Main Tyre ............................................................................................................25
4.4 AMPLIFIED EMERGENCY PROCEDURES .................................................................................................................26
4.4.1 Engine Failures ....................................................................................................................................26
4.4.2 Forced Landings .................................................................................................................................. 26
4.4.3 Ditching...............................................................................................................................................26
4.4.4 Fires.....................................................................................................................................................26
4.4.5 Rough Engine Operation / Loss of Power............................................................................................27
4.5 ELECTRICAL SYSTEM MALFUNCTIONS...................................................................................................................27
4.6 LOSS OF PRIMARY INSTRUMENTS........................................................................................................................28
4.6.1 Loss of flight controls ..........................................................................................................................28
4.6.2 Fuel System Malfunctions ................................................................................................................... 28
4.6.3 Spins.................................................................................................................................................... 28
5 NORMAL PROCEDURES ...............................................................................................................................29
5.1 GENERAL .......................................................................................................................................................29
5.2 SPEEDS FOR NORMAL OPERATION ......................................................................................................................29
5.3 NORMAL PROCEDURES CHECKLISTS.....................................................................................................................29
5.3.1 Preflight...............................................................................................................................................29
5.3.2 Before starting Engine ........................................................................................................................32
5.3.3 Starting Engine.................................................................................................................................... 32
5.3.4 Ground Check and Run-up .................................................................................................................. 32
5.3.5 Pre Take-off actions ............................................................................................................................ 33
5.3.6 Normal Take-off..................................................................................................................................34
5.3.7 Climb ...................................................................................................................................................34
5.3.8 Cruise .................................................................................................................................................. 35
5.3.9 Descent................................................................................................................................................35
5.3.10 Before Landing (Downwind Leg of Circuit)........................................................................................ 35
5.3.11Approach & Normal Landing .............................................................................................................35
5.3.12 Baulked Landing................................................................................................................................35
5.3.13 After Landing/Securing ..................................................................................................................... 35
5.4 AMPLIFIED PROCEDURES...................................................................................................................................36
5.4.1 Pre-flight Inspection............................................................................................................................36
5.4.2 Starting Engine.................................................................................................................................... 36
5.4.3 Taxiing.................................................................................................................................................36
5.4.4 Before Take-off....................................................................................................................................36
5.4.5 Take-off ............................................................................................................................................... 37
5.4.6 Short Field Take Off.............................................................................................................................37
5.4.7 Wet/Soft Field Take Off.......................................................................................................................37
5.4.8 Climb and Cruise .................................................................................................................................38
5.4.9 Stalls....................................................................................................................................................38

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5.4.10 Approach and Landing ......................................................................................................................38
5.4.11 Cross Wind Landing...........................................................................................................................38
5.4.12 Baulked Landing................................................................................................................................38
5.4.13 Short Field Landing............................................................................................................................ 39
5.4.14 Wet/Soft Field Landings....................................................................................................................39
6 PERFORMANCE ...........................................................................................................................................39
6.1 GENERAL .......................................................................................................................................................39
6.2 TAKE-OFF DISTANCE.........................................................................................................................................39
6.2 1 Take off total Distance Over a Fixed Height Obstacle (15m/50’)........................................................39
6.3 RATE OF CLIMB ...............................................................................................................................................40
6.4 CRUISE ..........................................................................................................................................................40
6.5 SERVICE CEILING..............................................................................................................................................40
6.6 LANDING DISTANCE .........................................................................................................................................40
6.6.1Landing Total Distance Over a Fixed Height Object (15m/50’)............................................................40
6.7 AIRSPEED CALIBRATION ....................................................................................................................................40
6.8 STALL SPEEDS .................................................................................................................................................41
7. WEIGHT & BALANCE AND EQUIPMENT LIST ...............................................................................................41
7.1 INTRODUCTION ...............................................................................................................................................41
7.2 AIRCRAFT WEIGHT AND BALANCE CALCULATION ...................................................................................................41
7.3 EQUIPMENT LIST .............................................................................................................................................46
8. DESCRIPTION OF AIRCRAFT SYSTEMS.........................................................................................................47
8.1 GENERAL................................................................................................................................................ 47
8.2 AIRFRAME ..............................................................................................................................................47
8.3 FLIGHT CONTROLS....................................................................................................................................47
8.4 INSTRUMENT PANEL .................................................................................................................................47
8.5 FLIGHT INSTRUMENTS ...............................................................................................................................48
8.6 ENGINE ..................................................................................................................................................48
8.7 PROPELLER .............................................................................................................................................48
8.8 UNDERCARRIAGE AND BRAKE SYSTEMS ........................................................................................................48
8.9 SEATS AND RESTRAINTS.............................................................................................................................49
8.10 CABIN ....................................................................................................................................................49
8.11 BAGGAGE ...............................................................................................................................................49
8.12 FUEL SYSTEM ..........................................................................................................................................49
8.13 ELECTRICAL SYSTEM.................................................................................................................................. 50
8.14 COCKPIT VENTILATION ..............................................................................................................................50
8.15 PITOT-STATIC SYSTEM AND INSTRUMENTS.....................................................................................................50
9. AIRCRAFT HANDLING, SERVICING AND MAINTENANCE .............................................................................51
9.1 INTRODUCTION........................................................................................................................................ 51
9.2 AIRCRAFT DOCUMENTS .............................................................................................................................51
9.3 AIRCRAFT INSPECTION AND MAINTENANCE ...................................................................................................51
9.3.1 Mandatory Inspection and Maintenance............................................................................................51
9.3.2 Recommended Preventative Maintenance ......................................................................................... 52
9.4 ALTERATIONS OR REPAIRS.......................................................................................................................... 52
9.5 GROUND HANDLING................................................................................................................................. 53
9.6 TOWING INSTRUCTIONS.............................................................................................................................53
9.7 PARKING AND TYING DOWN.......................................................................................................................53

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9.8FLUID SERVICING......................................................................................................................................53
9.8.1 APPROVED FUEL GRADE AND SPECIFICATIONS ...............................................................................................53
9.8.2 APPROVED OIL GRADES AND SPECIFICATIONS ................................................................................................54
9.9 CLEANING AND CARE ................................................................................................................................54
9.9.1 FUSELAGE...............................................................................................................................................54
9.9.2 ENGINE CARE ..........................................................................................................................................54
9.10 WHEEL BRAKE SYSTEM..............................................................................................................................55
9.11 TYRES ....................................................................................................................................................55
10. SUPPLEMENTS .........................................................................................................................................55
11. REFERENCES ......................................................................................................................................55

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Table of Figures
FIGURE 1. PLAN VIEW OF BRUMBY 610 ROTAX..............................................................................................12
FIGURE 2. SIDE VIEW OF BRUMBY 610 ROTAX ...............................................................................................12
FIGURE 3. HEAD ON VIEW OF BRUMBY 610 ROTAX .......................................................................................12
FIGURE 4 –PREFLIGHT CHECKLIST POINTS .....................................................................................................30
FIGURE 5. TAXIING IN WIND .........................................................................................................................34
FIGURE 6. EXAMPLE WEIGHT AND BALANCE CALCULATIONS........................................................................42
FIGURE 7. EXAMPLE WEIGHT AND BALANCE CHART .....................................................................................43
FIGURE 8. EQUIPMENT LIST...........................................................................................................................46
FIGURE 9. INSTRUMENT PANEL......................................................................................................................47
FIGURE 10. FUEL SYSTEM DIAGRAM .............................................................................................................49

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1. INTRODUCTION
1.1 ASTM Standards
This operating Handbook consists of an introductory section and 9 additional numbered
sections. It includes material required to be furnished to the pilot by Section 9 of ASTM
International Designation F 2245-13b –Standard Specification for Design and Performance of
a Light Sport Aircraft. Other standards required for the construction and safety monitoring of
aircraft are:
ASTM F2279-10 - Standard Practice for Quality Assurance in the Manufacture of LSA.
ASTM F2295-10- Continued Operational Safety Monitoring of Fixed Wing LSA
ASTM F2483-12 - Standard Practice for Maintenance & Development of Maintenance
Manuals
ASTM F2930-14 - Standard Guide for Compliance with LSA standards
ASTM F2746-12 - Standard Specification for Pilot's Operating Handbook (POH) for LSA
1.2 Manufacturer and contact information
Manufactured by Brumby Aircraft Australia
112 Airport Road Cowra NSW 2794
Phone [phone]
Email; [e-mail]
1.3 Data Location and Contact Information
Data location and contact information for the recovery of certification documents
should Brumby Aircraft Australia lose the ability to support the make and model will be
PG Aviation Pty Ltd
112 Airport Road Cowra NSW 2794

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2. GENERAL INFORMATION
2.1 Summary of Performance
Gross weight - 600 Kg
Top speed S/L - 120 Kts
Cruise speed at 5,000ft 110Kts at 5300rpm
Range –6 hours plus 1 hour reserve
VX (best angle of climb) –60 Kts
VY (best rate of climb) 70 Kts
Stall speed, flaps up 44 Kts
Stall speed, 30o flap 39 Kts
Fuel capacity 132litres
Fuel useable –130 litres
Fuel type –RON 95 Min (ethanol free)
Max power –100 hp at 5800 rpm (5 minutes)
The operating procedures presented herein are the result of Brumby Aircraft’s knowledge and
experience gained in the certification of the aircraft. The Handbook is not intended to be a
guide for basic flight instruction or as a training manual. It may be used for operational
purposes only if kept in a fully amended state. It contains the information considered
necessary to safely operate the aircraft.
The operator must thoroughly familiarise himself with the aircraft and the contents of this
Handbook before initial operation. Thereafter the Handbook should be reviewed periodically
to enable the operator to maintain the highest level of familiarity with the aircraft, its controls
and recommended operating procedures.
8640

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Figure 1. Plan view of Brumby 610 Rotax
Overall length 6775
Tail height from ground 2600
Figure 2. Side view of Brumby 610 Rotax
Wing span 8640
Wheel track (outside) 2011
Figure 3. Head on view of Brumby 610 Rotax
2.1 Handbook Explanation
This Handbook, unless subsequently amended, refers to the aircraft as originally delivered from
the factory. The basic Pilots Operating Handbook (POH) provides all required details of the
standard aircraft and the procedures required to operate in the recreational role. For other role
operations, refer to the Supplements in Section 10 to provide details and procedures associated
with the fitment of special optional and special purpose equipment that the aircraft may be
approved for.
2011
6775

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Any amendments to any section of the POH are to have an amendment number and show the
date of issue of the amendment. Amendments will be issued by the manufacturer and are to be
incorporated as soon as possible after their receipt and details entered in the appropriate
amendment record sheet.
2.1.1 Definitions
Definitions used in the POH such as WARNING, CAUTION, NOTE are employed in the following
context:
WARNING
Operating procedures, techniques, etc. which if not followed correctly, may result in personal
injury or death.
CAUTION
Operating procedures, techniques, etc. which if not strictly observed, may result in damage to
the aircraft or to its installed equipment.
NOTE
Operating procedure, techniques etc. which it is considered appropriate to highlight.
2.2 General Description
2.2.1 Aircraft
This Aircraft has been constructed under the Light Sport Aircraft (LSA) category in accordance
with ASTM standards. The fuselage is of all metal semi-monocoque construction, with
removable composite engine cowlings. The cockpit area is reinforced with a tubular frame.
The cockpit is designed to accommodate two persons. Each person has access their own set of
flight controls and has access to all engine and system controls. The left hand seat is designated
as the command pilot station. A baggage compartment is provided aft of the pilots’ seats.
Maximum baggage behind the seats on the floor is 20kgs. Only soft and very light weight items
should be stored on the upper shelf. The wings are of all metal construction, with aluminium fuel
tanks. The ailerons and flaps are also of all metal construction.
2.2.2 Engine
A four cylinder, horizontally opposed, water cooled, normally aspirated Rotax 912 ULS engine is
installed with a nominal rating of 100 BHP. The engine drives a three bladed ground adjustable
composite propeller.

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2.3 Symbols, Abbreviations and Terminology
2.3.1 General Symbols and Abbreviations
AGL
Above Ground Level
AMSL
Above Mean Sea Level
AVGAS
Aviation Gasoline
BHP
Brake Horse Power
CASA
Civil Aviation Safety Authority (Australia)
⁰C
degrees Celsius
CHT
Cylinder Head Temperature
EMERG
Emergency
ft
Foot
ft/min
Feet per minute
g
Acceleration due to gravity
hPa
Hectopascal(s)
ISA
International Standard Atmosphere
Kg
Kilogram(s)
KIAS
Knots Indicated Airspeed
kPa
Kilopascal(s)
l
Litre(s)
m
Metre(s)
MAC
Mean Aerodynamic Chord
max
Maximum
MCP
Maximum Continuous Power
mm
Millimetre(s)
min
Minimum
nm
Nautical mile(s)
PAX
Passenger
POH
Pilot’s Operating Handbook
psi
Pounds per Square Inch
RPM
Revolutions per Minute
T/O
Take-off
VFR
Visual Flight Rules
VMC
Visual Meteorological Conditions

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2.3.2 General Airspeed Terminology and Symbols
CAS Calibrated Airspeed: the indicated speed of an aircraft corrected for position and
instrument error. CAS is equal to true airspeed in a standard atmosphere at sea level.
KCAS CAS expressed in knots.
IAS Indicated Airspeed: the speed of the aircraft as shown on the airspeed indicator.
IAS values shown in the POH assume zero instrument error.
KIAS IAS expressed in knots.
TAS True airspeed: The airspeed of the aircraft relative to the undisturbed air through
which it passes.
VTOSS Take-off Safety Speed: The airspeed chosen to ensure that adequate control will
exist under all conditions, including turbulence and sudden and complete engine failure,
during the climb after take-off. It is the speed to be achieved by 50 ft. After lift off the
aircraft should not be allowed to climb away until VTOSS is attained.
VAMax Manoeuvring Design Speed: The maximum speed at which application of full
available aerodynamic control will not damage or overstress the aircraft.
VFE Maximum Flap Extension Speed: The highest speed permissible with wing flaps in a
prescribed extended condition.
VNE Never Exceed Speed: The limiting airspeed that may not be exceeded at any time.
VSStalling Speed: or minimum steady flight speed at which the aircraft is controllable.
VS0 Stalling Speed: or minimum steady flight speed at which the aircraft is controllable
in the landing configuration.
VXBest Angle of Climb Speed: The airspeed which delivers the greatest gain in altitude
in the shortest possible horizontal distance.
VYBest Rate of Climb Speed: The airspeed that delivers the greatest gain in altitude in
the shortest possible time.
VAPP = VREF Approach Speed: The airspeed chosen to ensure that adequate control will
exist under all conditions, including turbulence, to carry out a normal flare and touchdown.
It is the speed required at 50 ft.
Vo Operating Manoeuvre Speed. An airspeed such that at airspeeds slower than Vo the
aircraft will stall before the structure is subjected to its limiting aerodynamic load

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2.3.3 Meteorological Terminology
ISA International Standard Atmosphere in which:
The air is a perfect dry gas
The temperature at sea level is 150C
The pressure at sea level is 1013 hPa (29.92 inches Hg)
The temperature gradient from sea level is 1.980C/1000 feet
OAT Outside Air Temperature: The outside free air static temperature.
Pressure Altitude: The altitude read on the altimeter when the barometric sub-scale has
been set to 1013 hPa.
2.3.4 Aircraft Performance Terminology
Climb Gradient: The ratio of change in height during a climb, to the horizontal distance
travelled.
Demonstrated Crosswind Component: The crosswind component during take-off and
landing for which adequate control of the aircraft was demonstrated during manufacturer’s
flight tests.
2.3.5 Weight and Balance Terminology
Reference Datum: An imaginary vertical plane from which all horizontal distances are
measured for balance purposes.
Station: A location along the aircraft fuselage usually given in terms of distance from the
reference datum.
Arm: The horizontal distance from the reference datum to the centre of gravity (CG) of an
item.
Moment: The product of the weight of an item multiplied by its arm.
Centre of Gravity (CG): The point at which the aircraft would balance if suspended. The
distance from the CG to the reference datum can be found by dividing the total moment by
the total weight of the aircraft.
CG Arm: The arm obtained by adding the aircraft’s individual moments by the sum of the
total weight.
CG Limits: The extreme CG locations within which the aircraft must be operated at a given
weight.
Useable Fuel: Fuel available that may be used in flight.
Unusable Fuel: Fuel that cannot be used to maintain engine operation.

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Empty Weight: Weight of the aircraft with unusable fuel and undrainable oil.
Basic Empty Weight: Usually defined as empty weight plus full oil.
Useful Load: Difference between take-off weight and basic empty weight.
Maximum Take-off Weight (MTOW): Maximum weight approved for take-off.
3Limitations
3.1 General
This section of the POH presents the various operating limitations, instrument markings,
colour coding and basic placards necessary for safe operation of the aircraft, its engine and
systems. For specific operations covered by a supplement in Section 9 of this POH,
limitations applicable will be found in the relevant supplement.
The maximum service ceiling for the Brumby 610 R is 12,500 AMSL.
The load factor limits are 4G positive and 2.0G negative.
3.2 Airspeed Limitations (V Speeds)
SPEED
KIAS
REMARKS
Max Design Manoeuvring Speed
(VA)
90
Do not make full or abrupt control
movements above this speed
Max Flap Extend Speed (VFE)
80
Do not exceed this speed with any
flap extended
Never Exceed Speed (VNE)
140
Do not exceed this speed in any
operation
Max Structural Cruise Speed
(VNO)
100
Do not exceed this speed except in
smooth air and then with caution
3.3 Airspeed Indicator Speed Range Markings
MARKING
KIAS
SIGNIFICANCE
White Arc
39
80
Flap operating range. Lower limit is max weight stalling speed in
landing configuration Vso
Upper limit is VFE
Green Arc
44
100
Normal operating range. Lower limit is max weight stalling speed
with flaps up. Vs
Upper limit is VNO
Yellow Arc
100
140
Operations must only be conducted with caution in smooth air
Red Line
140
Maximum speed for all operations (VNE)

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Stall Speeds At Maximum Take Off Weight
Stall Type MTOW
KIAS
Significance
Vso
39
Stall speed MTOW full flaps
Vs
44
Stall speed MTOW zero flaps
Flap Extended Speed Range
Flap Extended
KIAS
Significance
Vso
39
Minimum flight speed flap extended
Vfe
80
Maximum flight speed flap extended
Operating Manoeuvre Speed
The Maximum Operating Manoeuvre Speed (Vo) is an airspeed such that at airspeeds slower than Vo the
aircraft will stall before the structure is subjected to its limiting aerodynamic load. The table below shows Vo
at maximum and minimum weights as well as a practical weight approximating a pilot and 20 litres of fuel.
Vso at particular weights
Weight Kgs
KIAS
Significance
600
88
Max weight, aircraft fully loaded
470
79
Practical weight,Pilot + 20 litres of fuel
370
70
Minimum weight, basic empty aircraft
3.4 Engine Limitations
3.4.1 Engine limitations
Engine manufacturer: Rotax Aircraft Engines. Refer to Rotax Operators Manual.
For Rotax Engine Type 912 Series
Performance Performance data relate to ISA conditions without Governor,
external generator etc.
Take-off performance
73.5 kw @ 5800 rpm (max 5 min)
Max. Continuous performance
69 kw @ 5500 rpm
Engine Power Output
Take-off power
5800 rpm (max. 5 min)
Max. continuous power
5500 rpm
Max continuous torque
5000 rpm
Min Idle power
Min. 1400 rpm
Acceleration limit of engine operation at zero gravity and in negative “g” condition
Max.
5 seconds at max. -0.5 g
Oil Pressure
Max.
7 bar (102 psi)
NOTE for a short period admissible at cold start
Min.
0.8 bar (12 psi) (below 3500 rpm)

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Normal
2.0 to 5.0 bar (29-73 psi) (above 3500 rpm)
Oil Temperature
Max.
130 ⁰ (266 ⁰F)
Min.
50 ⁰ (120 ⁰ F)
Normal operating temperature
Approx. 90 to 110⁰ C (190-230 ⁰ F)
EGT
Max.
880 ⁰C (1616⁰F )
Normal
800 850⁰C (1472⁰F)
CHT
Min.
50oC (122 oF)
Max.
135oC (275oF)
3.4.1 Fuel grade
Premium (RON 95 Min) Unleaded (Ethanol free). If Unleaded fuel is not available then
AVGAS 100LL can be used.
NOTE For fuel tank capacities refer to para. 2.10 “Fuel Limitations”
3.4.2 Engine coolant
The engine coolant is 50/50 mixed glycol and water and engine is filled to radiator cap on
top of engine when cold. The operating level is indicated by max/min marks on the overflow
bottle fitted to the firewall. Max. coolant temperature is 120oC (248oF)
NOTE Refer to Rotax Operators Manual for Type 912 SeriesLubricating oil
1. Specification –AeroShell Oil Sport Plus 4 Aviation Oil 10W.40
2. Capacity - Max: 3 litres
Min safe: 2.51 litres
3.4.3 Propeller
Number of blades: 3
Type: Composite, Ground Adjustable
Manufacturer: Whirlwind
Designation: 3 Blade
3.5 Engine Instrument Markings
INSTRUMENT
Green Arc
Normal
Operating
Yellow Arc
Precautionary
Range
Red Line
Tachometer (RPM)
1400-5500
5500-5800
5800
Oil Pressure
2-5 bar
29-73 psi
0.8 - 2 bar 12-29psi
5-7 bar.73-102psi
0 - 0.8 bar 0-12psi
7 bar 102psi
Oil Temperature (0C)
90 - 110
50-900
110-1300
130
CHT (0C)
75-110
50-750
110-1350
135

BRUMBY AIRCRAFT AUSTRALIA Pilot’s Operating Handbook Brumby 610 Rotax
Brumby Aircraft Document POH610 V4.0 SEPTEMBER 2014 Page 20 of 55
MAXIMUM EGT (0C)
880o
3.6 Weight and Centre of Gravity Limits
3.6.1 Weight Limits
Maximum Take-off Weight: 600 kg
Maximum Landing Weight: 600 kg
3.6.2 Centre of Gravity Limits
Datum: Wing leading edge
Forward Limit 16% MAC: 208 mm aft of the datum up to 520 kg
Forward Limit 16% MAC 208 mm aft of the datum at 600 kg
Aft Limit 28% MAC: 365 mm aft of the datum up to 600 kg
3.7 Manoeuvre Limits
All aerobatic manoeuvres including spins are prohibited.
3.8 Limits to the Kinds of Operations
The aircraft is approved for private operations, flying training operations and glider towing
operations. The aircraft is approved for Day VFR operations. It is also approved for Night VFR
operations when fitted out in accordance with NVFR requirements. If Night VFR approved
this must be stated in Section 10.
3.9 Placards
The following placards are required and are to be located as follows:
Interior
LSA Warning placard –instrument panel
Switch and circuit breaker ID –instrument panel
Open / Close /–adjacent to door handles
Fuel on/off –cockpit –fuel valves located above each door
Trim –nose up / down –adjacent to trim wheel
Maximum luggage weight 20 kg –aft of pilot attached to parcel tray. As described in
Section 6 Weight and Balance but in any case should not exceed 20Kg.
MTOW 600Kgs –cockpit instrument panel
Aircraft registration –cockpit instrument panel
Exterior
Door open closed adjacent to door handles
Earth on exhaust –earth to exhaust by attaching the earth clamp to the lip of the
exhaust pipe.
Minimum fuel octane 95 RON (ethanol free) or 100LL adjacent to filler cap
Capacity 65 litres on each wing adjacent to the filler cap.
Fuel Vent –port and starboard wing tips
Fuel Drain –lower left firewall, under port & starboard wings
Oil –(10W/40 Aeroshell Oilsport Plus 4) outside cowl inspection cover