Diamond Diamond Star DA40 TDI User manual

Checklist für Diamond DA40 TDI Diamond Star
Edition #: 17.1 Edition date: 15.04.2017
Please observe:
The file you are receiving hereby combines all three sections of the checklist: Normal
Checklist, Emergency Checklist and Abnormal Checklist.
All pages of a new edition will have the same new “edition #” and “edition date”, even if
only one page was amended and all other pages still have the same, unchanged content.
Therefore the “List of Effective Pages” (LEP) is provided. It is here where you can see
whether a particular page was amended. Pages which have been amended by a new
edition will be marked yellow. For all other pages you will see which original “edition #”
(and of course any higher “edition #”) is still valid.
Note:
The system of assigning “Edition #” is as follows:
• if the revision affects all types, a new edition # (without a decimal figure) will be
assigned to all of the checklists
• if the revision does not affect all types, the affected checklists will get subsequent
“decimal figures” until a major revision affecting all checklists is issued.
Have a lot of nice flights and happy landings!
Peter Schmidleitner
Comments explaining Edition # 17.1 are on page 2 of this document
Checklist DA40 TDI - LEP
Following
Page Edition Date
(or any higher)
is valid
Section : Normal Checklist
1 14 01.12.2006
2 15.2 01.03.2015
3 14 01.12.2006
4 17.1 15.04.2017
5 14 01.12.2006
6 14 01.12.2006
7 14 01.12.2006
8 15.2 01.03.2015
Section: Emergency Checklist
1 15.1 20.03.2014
2 15.1 20.03.2014
3 15 20.05.2010
4 15 20.05.2010
5 15 20.05.2010
6 15 20.05.2010
Section: Abnormal Checklist
7 14 01.12.2006
8 14 01.12.2006
9 14 01.12.2006
10 14 01.12.2006

Comments explaining Edition # 15.1
Emergency Checklist:
Page 1: “Emergency Landing”: Safety harnesses added
Page 2: “Rough Engine and/or Power Loss” updated
Comments explaining Edition # 17
Preflight Procedures:
Page 2:
Parking brake, chocks, towbar added
Normal Procedures:
Page 8:
Parking Check, item 3:
Text of ELT check revised
Comments explaining Edition # 17.1
Normal Procedures:
Page 4: Engine Start Procedure: “Prop Area….CLEAR” placed on top

DA40 TDI
15.04.2017 Diamond Flight Training Page 1
NORMAL CHECKLIST
Diamond DA40 TDI
This checklist is compiled according the guidelines of GAMA Specification No.1, SECTION 3, para 3.5,
SECTION 3A, para 3A.5 and SECTION 4, para 4.5.
The “Amplified Normal Procedures”, „Amplified Emergency Procedures“ and „Amplified Abnormal
Procedures“ according GAMA Specification No. 1 are in the DA40 Airplane Flight Manual Chapters 4A,
3 and 4B.
This checklist is a Recommended Operator Checklist and for reference only.
It is not a substitute for and does not supersede the current approved Airplane Flight Manual or any
of its supplements or parts thereof, or any training or procedures required by any regulatory or
advisory bodies.
This checklist may not contain all procedures shown in the Airplane Flight Manual. For a
comprehensive listing of all procedures consult the Airplane Flight Manual.
Use of the checklist is at the user's sole risk and discretion.
Any possible liability of Diamond Flight Training and/or Diamond Aircraft for any damages, injury or
death resulting from its use is excluded.
All such terms and conditions shall be deemed to be explicitly accepted in full by using the checklist.
If you do not understand, or if you disagree with, any of the above terms and conditions and in any
jurisdiction that does not give effect to all provisions of these terms and conditions any use of the
checklist is not permitted.
Edition # 17.1 Does not replace the Airplane Flight Manual

DA40 TDI PREFLIGHT PROCEDURES
15.04.2017 Diamond Flight Training Page 2
Edition # 17.1 Does not replace the Airplane Flight Manual
Landing/Taxi light
PREFLIGHT INTERIOR +
EXTERIOR.
1 Check Aircraft papers
2 Remove pitot cover
3 Check interior for foreign objects
4 Check flight controls free
5 Check circuit breakers
6 Emergency Fuel Valve NORMAL
7 Engine Master OFF
8 ECU SWAP AUTO
9 Essential bus OFF
10 All avionics + all electrics OFF
11 Electric Master ON
Check battery voltage
12 Check fuel quantity + temp
13 External lights ON
14 Pitot heat ON
15 Parking brake SET
16 Check stall warning
17 Check pitot heat
18 Check external lights
19 Electric Master OFF,
key removed
PREFLIGHT EXTERIOR
Left main gear
Wheel fairing
Tire condition, pressure (2,5 bar),
position mark
Brake, hydraulic line
Left wing
Wing leading edge, top- and bottom
surface, stall strips
Drain fuel sump
Stall warning
Fuel vent
Fuel filler cap
Pitot, static probe (cover removed)
Wing tip, position light
Static dischargers
Aileron (freedom of movement,
hinges, control linkage,
security)
Wing flap
Left fuselage
Canopy left side
Rear door
Fuselage left side
Antennas
Tail
Elevator & rudder (freedom of
movement, hinges)
Trim - tab
Tail skid + lower fin
Static dischargers
Right fuselage
Fuselage right side
Rear window
Canopy right side
Right wing
Wing flap
Aileron (freedom of movement,
hinges, control linkage,
security)
Static dischargers
Wing tip, position light
Wing leading edge, top- and bottom
surface, stall strips
Fuel filler cap
Fuel vent
Drain fuel sump
Right main gear
Wheel fairing
Tire condition, pressure (2,5 bar),
position mark
Brake, hydraulic line
Nose section
OAT sensor
Propeller surface
Spinner
Cowling, Air inlets (5)
Nose gear
Wheel fairing
Tire condition, pressure (2,0 bar),
position mark
Engine bay
Engine oil level (4,5 – 6,0 l)
Gearbox oil level
Drain fuel strainer
Chocks removed
Towbar removed

DA40 TDI NORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 3
Edition # 17.1 Does not replace the Airplane Flight Manual
CHECK BEFORE ENGINE START
1 Preflight check ............................COMPLETED 1
2 Baggage and tow bar ...................... SECURED 2
3 Emergency fuel valve........................NORMAL 3
4 Power lever...........................................IDLE 4
5 Parking brake......................................... SET 5
6 Alternate air..................................... CLOSED 6
7 Circuit breakers..........................CHECKED IN 7
8 Fuel transfer .......................................... OFF 8
9 Avionic master ....................................... OFF 9
10 Essential bus.......................................... OFF 10
11 Electric Master........................................ OFF 11
12 All light switches..................................... OFF 12
13 Pitot heat .............................................. OFF 13
14 Alternate static................................. CLOSED 14
15 Emergency switch.................. OFF / GUARDED 15
16 ECU swap ............................................AUTO 16
17 Engine Master ........................................ OFF 17
18 Instrument + flood light .......................... OFF 18
19 Gyro slave switch ................................SLAVE 19
20 Flap selector ............................................UP 20
21 Electric Master......................................... ON 21
22 Annunciator Panel/ Eng.instr. ........... CHECKED 22
23 Acknowledge button............................ PRESS 23
24 Low coolant warning Light..........CHECKED OFF 24
25 Rudder pedals...............................ADJUSTED 25
26 Passengers ............................... INSTRUCTED 26
27 Seat belts.....................................FASTENED 27
28 Rear door .................... CLOSED and LATCHED 28
29 Front canopy.................................POS 1 or 2 29
30 Fuel quantity.................................. CHECKED 30
31 Fuel temperature............................ CHECKED 31
32 Hobbs meter......................................NOTED 32
33 Power lever...........................................IDLE 33
34 ACL (strobe) ........................................... ON 34
End of Checklist

DA40 TDI NORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 4
Edition # 17.1 Does not replace the Airplane Flight Manual
ENGINE START PROCEDURE
Propeller area ........................................ CLEAR
Engine Master.............................................ON
Annunciations / Eng.Instr. ...................CHECKED
Glow indication ..........................................OFF
Start key............................................... START
Oil pressure............... OUTSIDE RED within 3 sec
Voltage, Electrical load......... CHECK INDICATION
Annunciations ACKNOWLEDGE / Eng.Instr. CHECK
CHECK AFTER ENGINE START
1 Oil pressure ................................... CHECKED 1
2 RPM 890 +/- 20.............................. CHECKED 2
3 Warm up time.................................... START 3
Warm up:
Idle ................................................. 2 minutes
1400RPM .................. untilOT>50°CandCT>60°C
4 Pitot heat ... ON, annunciation + Amps checked 4
5 Pitot heat .............................................. OFF 5
6 Avionics master....................................... ON 6
7 VHF COM / NAV / GPS............................. SET 7
AUTOPILOT TEST
DISCONN press, check electric trim not working
AP ON, check overpowering servos
DISCONN press, check AP off
8 Autopilot test ..............................COMPLETED 8
9 Flood light .............. CHECKED, ON as required 9
10 Position lights..........................ON as required 10
11 Flaps.................full travel CHECKED, then T/O 11
12 Altimeters (3) ........................................ SET 12
13 Horizon / Directional gyro ........CHECKED / SET 13
14 Transponder ..............CODE / MODE CHECKED 14
15 Parking brake................................RELEASED 15
End of Checklist
DURING TAXI
Check Brakes
Check flight instruments

DA40 TDI NORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 5
Edition # 17.1 Does not replace the Airplane Flight Manual
BEFORE TAKE OFF CHECK
1 Parking brake......................................... SET 1
2 Seat belts.....................................FASTENED 2
3 Rear door .......................CLOSED + LATCHED 3
4 Front canopy................... CLOSED + LATCHED 4
5 Door warning light .................................. OFF 5
6 Engine instruments......................... CHECKED 6
7 Fuel Temperature (Diesel min. +5°).. CHECKED 7
8 Circuit breakers.............................. CHECKED 8
9 Electric elevator trim..........CHECKED, T/O SET 9
10 Flaps.......................................CHECKED T/O 10
11 Flight controls ................................ CHECKED 11
12 Power lever...........................................IDLE 12
13 ECU test........................................ PERFORM 13
ECU TEST
ECU test button...........................press and hold
ECU backup unsafe light........................ flashing
ECU A, B, Caution lights ........................ flashing
ECU B, Caution lights.........flashing / prop cycling
ECU A, Caution lights.........flashing / prop cycling
All ECU caution lights......................extinguished
ECU backup unsafe light..................extinguished
ECU test button..................................... release
14 ECU swap ................ECU B, ENGINE CHECKED 14
15 ECU swap ............................................AUTO 15
16 Pitot heat ................................AS REQUIRED 16
17 Transponder ..............CODE / MODE CHECKED 17
18 Parking brake................................RELEASED 18
End of Checklist
For procedural items and take-off profile see next page

DA40 TDI NORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 6
LINE UP PROCEDURE
Landing light...............................................ON
Approach sector ..................................... CLEAR
Runway..........................................IDENTIFIED
Power levermax(100%/10sec) ...........................
....................CHECK RPM /OP / LOAD / Fuel flow
Rotate at 59 kt
AFTER TAKE-OFF PROCEDURE
After passing safe altitude:
Flaps ..........................................................UP
Landing light..............................................OFF
Edition # 17.1 Does not replace the Airplane Flight Manual

DA40 TDI NORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 7
CLIMB TO CRUISE CHECK
1 Flaps........................................ CHECKED UP 1
2 Landing light............................CHECKED OFF 2
End of Checklist
PERIODICALLY DURING CRUISE
Fuel Radio Engine Direction Altitude
Fuel transfer..........................repeat as required
Maximum fuel unbalance - Long range tank: 9 USG
DESCENT / APPROACH CHECK
1 Landing data................................. RECEIVED 1
2 Altimeters (3) ........................................ SET 2
3 COM / NAV / GPS.................................... SET 3
4 Directional gyro...................................... SET 4
5 Seatbelts......................................FASTENED 5
6 Fuel transfer ............................AS REQUIRED 6
End of Checklist
BEFORE LANDING PROCEDURE
Downwind, latest base leg:
Flaps ........................................................T/O
Landing light...............................................ON
On final:
Flaps ....................................................... LDG
GO AROUND PROCEDURE
Power ...................................................... MAX
Flaps ........................................................T/O
Continue with take-off profile
Edition # 17.1 Does not replace the Airplane Flight Manual

DA40 TDI NORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 8
Edition # 17.1 Does not replace the Airplane Flight Manual
AFTER LANDING CHECK
1 Flaps.......................................................UP 1
2 Pitot heat .............................................. OFF 2
3 Alternate air..................................... CLOSED 3
4 Landing/Taxi light.....................AS REQUIRED 4
5 Transponder ............................AS REQUIRED 5
End of Checklist
PARKING CHECK
1 Parking brake......................................... SET 1
2 Power lever............................ IDLE for 2 min. 2
3 ELT................................CHECK not activated 3
4 Hobbs meter......................................NOTED 4
5 Avionic master ....................................... OFF 5
6 Electrical consumers except ACL (strobe)... OFF 6
7 Engine Master ........................................ OFF 7
8 ACL (strobe) .......................................... OFF 8
9 Electric Master........................................ OFF 9
10 Interior light ............................CHECKED OFF 10
11 Start key.......................................REMOVED 11
End of Checklist
OPERATING SPEEDS KIAS
850 kg 1000 kg 1150 kg
Best gliding angle (Flaps UP 60 68 73
Best angle of climb (VX)
Best rate of climb (VY) 54 60 66
Cruising climb speed 60 68 73
Rotating speed 49 55 59
Max. flap speed (VFE) T/O 108
Max. flap speed (VFE) LDG 91
Landing speed Flaps UP 60 68 73
Landing speed Flaps LDG 58 63 71
Stalling speed (VS0) LDG 42 <-980kg-> 49
Stalling speed (VS) T/O 44 <-980kg-> 51
Stalling speed (VS) clean 47 <-980kg-> 52
Max. cruising speed (VNO) 129
Never exceed speed (VNE) 178
Manoeuvring speed (VA) 94 <-980kg-> 108
Max. turbulence speed 129
Weights Empty weight 850 kg
Max. TKOF weight 1150 kg Max. baggage weight 30 kg

DA40 TDI
15.04.2017 Diamond Flight Training Page 1
EMERGENCY + ABNORMAL CHECKLIST
Abnormal Checklist starts at page 7
WARNING LIGHTS
Engine
Rough engine and/or power loss ........................page 2
Windmill engine start..........................................page 3
Powered engine start ..........................................page 3
Fluctuating RPM ..................................................page 4
RPM overspeed....................................................page 4
RPM underspeed .................................................page 4
Electric System
Under/over voltage ............................................page 6
Total electrical fail ..............................................page 6
Smoke and Fire
Fire / smoke on ground ......................................page 5
Fire / smoke in continued TKOF ..........................page 5
Engine fire in flight .............................................page 5
Electric fire / smoke in flight ..............................page 6
Other Emergencies
Fuel transfer pump u/s ......................................page 3
Suspicion of carbon monoxide.............................page 6
EMERGENCY LANDING
1 Airspeed..................................73/68/60 KIAS 1
2 ATC................................................. INFORM 2
3 Emergency fuel valve............................... OFF 3
4 Engine Master......................................... OFF 4
On final:
5 Flaps .....................................................LDG 5
6 Safety harnesses..................................TIGHT 6
7 Electric master switch .............................. OFF 7
Edition # 11 Does not replace the Airplane Flight Manual
For conditions to use this
Emergency + Abnormal Checklist
see page 1 of the Normal Checklist.
All such conditions are fully
applicable also for this checklist.
………………………..……………….....pa
g
e 2

DA40 TDI EMERGENCY PROCEDURES
15.04.2017 Diamond Flight Training Page 2
Edition # 11 Does not replace the Airplane Flight Manual
WARNING LIGHTS
STARTER STARTER NOT DISENGAGING
1 Power lever ...........................................IDLE 1
2 Engine master......................................... OFF 2
3 Electric master........................................ OFF 3
DOORS DOOR(S) OPEN OR UNLOCKED
1 Airspeed........................................... REDUCE 1
2 Canopy and rear door ...............CHECK visually 2
If unlocked:
Aispeed below 140 KIAS, land ASAP
Do not try to lock the rear door in flight
TRIM FAIL AUTOPILOT TRIM FAIL
1 AP DISC switch (red button) ................. PRESS 1
2 AP circuit breaker...................................PULL 2
ROUGH ENGINE AND/OR POWER LOSS
1 Airspeed..................................73/68/60 KIAS 1
2 Power lever ........................................... MAX 2
3 Engine caution light...............................check 3
If ON: .......................... CHECK CED
4 Alternate air ..............in icing conditions: OPEN 4
5 Main tank fuel quantity ........................CHECK 5
6 Fuel transfer pump ................................... ON 6
7 Emergency fuel valve.............. CHECK NORMAL 7
8 ECU swap............................................ECU B 8
• In case of power loss: ECU reset:
9 Engine master................................. OFF – ON 9
If no success:
10 ECU swap.............................................AUTO 10
If no success and insufficient power:
Land ASAP

DA40 TDI EMERGENCY PROCEDURES
15.04.2017 Diamond Flight Training Page 3
Edition # 11 Does not replace the Airplane Flight Manual
WINDMILL ENGINE START
1 Airspeed............................73 - max 110 KIAS 1
2 Pressure Altitude..........................max 6000 ft 2
3 Power lever ...........................................IDLE 3
4 Emergency fuel valve.............. CHECK NORMAL 4
5 Alternate air .........................................OPEN 5
6 Fuel transfer pump ................................... ON 6
7 Avionic master........................................ OFF 7
8 Electric master......................................... ON 8
9 Engine master............................OFF, then ON 9
10 Avionic master......................................... ON 10
POWERED ENGINE START
1 Gliding airspeed .......................73/68/60 KIAS 1
2 Pressure Altitude..........................max 6000 ft 2
3 Engine master......................................... OFF 3
4 Power lever ...........................................IDLE 4
5 Emergency fuel valve.............. CHECK NORMAL 5
6 Alternate air .........................................OPEN 6
7 Fuel transfer pump ................................... ON 7
8 Avionic master........................................ OFF 8
9 Electric master......................................... ON 9
10 Engine master.......................................... ON 10
11 Glow indication ...........CHECK ON, wait for OFF 11
12 Electric master.................................... START 12
13 Avionic master......................................... ON 13
FUEL TRANSFER PUMP U/S
1 Emergency fuel valve.......... EMERG. TRANSFER 1
2 AUX fuel quantity ................ CHECK min 1 USG 2
3 MAIN fuel quantity.............CHECK max 15 USG 3
4 Emergency fuel valve.............reset to NORMAL 4

DA40 TDI EMERGENCY PROCEDURES
15.04.2017 Diamond Flight Training Page 4
Edition # 11 Does not replace the Airplane Flight Manual
FLUCTUATING RPM
1 Power lever ........................ CHANGE SETTING 1
• If no success:
2 ECU swap............................................ECU B 2
• If no success:
3 ECU swap.............................................AUTO 3
• If no success: Land ASAP
RPM OVERSPEED
1 Power lever ............ ADJUST to max. 2300 RPM 1
2 Flaps .......................................................UP 2
3 Airspeed........................................... 73 KIAS 3
4 Power lever .............................. AS REQUIRED 4
but do not exceed 2300 RPM
5 ECU swap............................................ECU B 5
• If no success:
6 ECU swap.............................................AUTO 6
Land ASAP
If increased climb rate required:
7 Flaps ..................................................... T/O 7
8 Airspeed........................................... 66 KIAS 8
9 Power lever ............ ADJUST to max. 2300 RPM 9
RPM UNDERSPEED
1 Power lever .............................. AS REQUIRED 1
2 ECU swap............................................ECU B 2
• If no success:
3 ECU swap.............................................AUTO 3
Land ASAP

DA40 TDI EMERGENCY PROCEDURES
15.04.2017 Diamond Flight Training Page 5
Edition # 11 Does not replace the Airplane Flight Manual
FIRE / SMOKE ON GROUND
1 Power lever ...........................................IDLE 1
2 Cabin heat.............................................. OFF 2
3 Emergency fuel valve............................... OFF 3
4 Fuel transfer pump .................................. OFF 4
5 Engine master......................................... OFF 5
6 Electric master........................................ OFF 6
When engine stopped:
7 Canopy ................................................OPEN 7
Evacuate
FIRE / SMOKE DURING CONTINUED TKOF
1 Cabin heat.............................................. OFF 1
Land ASAP
When landing assured:
2 Emergency fuel valve............................... OFF 2
3 Fuel transfer pump .................................. OFF 3
4 Engine master......................................... OFF 4
5 Electric master........................................ OFF 5
6 Emergency window............. OPEN as necessary 6
7 Canopy ........................UNLATCH as necessary 7
ENGINE FIRE IN FLIGHT
1 Cabin heat.............................................. OFF 1
2 Emergency landing...........................PREPARE 2
3 Airspeed..................................73/68/60 KIAS 3
4 ATC................................................. INFORM 4
5 Emergency window............. OPEN as necessary 5
6 Canopy ........................UNLATCH as necessary 6
When landing assured:
7 Emergency fuel valve............................... OFF 7
8 Power lever ........................................... MAX 8
9 Engine Master......................................... OFF 9
On final:
10 Flaps .....................................................LDG 10
11 Electric master switch .............................. OFF 11

DA40 TDI EMERGENCY PROCEDURES
15.04.2017 Diamond Flight Training Page 6
Edition # 11 Does not replace the Airplane Flight Manual
ELECTRIC FIRE / SMOKE IN FLIGHT
1 Emergency switch .................................... ON 1
2 Avionic master........................................ OFF 2
3 Electric master........................................ OFF 3
4 Cabin heat.............................................. OFF 4
5 Emergency window............. OPEN as necessary 5
6 Canopy ........................UNLATCH as necessary 6
Land ASAP
SUSPICION OF CARBON MONOXIDE
1 Cabin heat & defrost................................ OFF 1
2 Ventilation............................................OPEN 2
3 Emergency windows ..............................OPEN 3
4 Airspeed...................................max 120 KIAS 4
5 Canopy .......................................... UNLATCH 5
Push up and lock in cooling gap position
UNDER / OVER VOLTAGE
1 Essential bus ........................................... ON 1
Land ASAP
TOTAL ELECTRIC FAIL
1 Circuit breakers.........................CHECK ALL IN 1
2 Essential bus ........................................... ON 2
If no success:
3 Emergency switch .................................... ON 3
4 Flood light, if necessary............................. ON 4
5 Power.................................................... SET 5
according power lever position and/or engine noise
6 Flaps ..................................VERIFY POSITION 6
Land ASAP

DA40 TDI ABNORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 7
Edition # 17.1 Does not replace the Airplane Flight Manual
CAUTION LIGHTS
ENGINE Page 7 Eng. parameter(s) out of green range
PITOT Page 7 Pitot heating system failed or OFF
LOW FUEL Page 7 LH tank fuel quantity low
ECU A Page 8 Engine ECU A malfunction
ECU B Page 8 Engine ECU B malfunction
LOW VOLTS Page 8 Bus voltage too low
ALTERNATOR Page 8 Alternator failure
Indications outside of green range
RPM high..........................................page 9
OIL pressure high/low ........................page 9
OIL temperature high/ low..................page 9
FUEL temperature high/low.................page 9
COOLANT temperature high/low ........page 10
GEAR temperature high....................page 10
GENERATOR yellow range.................page 10
VOLT low/high.................................page 10
ENGINE ENG. PARAMETER(S) OUT OF GREEN RANGE
¾ Check Compact Engine Display CED 125
¾ Check Auxiliary Engine Display AED 125
¾ Press „Acknowledge” button
 If an indication is outside of green range:
⇒ continue with appropriate INDICATIONS OUTSIDE OF
GREEN RANGE procedure
PITOT PITOT HEATING SYSTEM FAILED OR OFF
¾ Check pitot heat ON
 If in icing conditions:
⇒ Expect failure of the pitot-static-system
⇒ Alternate static valve: OPEN
⇒ Leave area with icing conditions
LOW FUEL LH TANK FUEL QTY LOW
¾ Fuel transfer pump: ON
¾ Check fuel quantity
 If light still ON:
⇒ Expect fuel leak
⇒ Be prepared for emergency landing

DA40 TDI ABNORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 8
Edition # 17.1 Does not replace the Airplane Flight Manual
ECU A OR B ON GROUND
¾ Discontinue operation, terminate flight preparation
ECU A DURING FLIGHT
Remark: in case of ECU A fail the system automatically switches to ECU B
¾ Press ECU TEST button for more than 2 seconds
 If ECU A caution message re-appears or cannot be reset:
⇒ Land ASAP
 If ECU A caution message can be reset:
⇒ Continue flight. Engine must be serviced after LDG
ECU B DURING FLIGHT
¾ Press ECU TEST button for more than 2 seconds
 If ECU B caution message re-appears or cannot be reset:
⇒ Land ASAP
 If EDU B caution message can be reset:
⇒ Continue flight. Engine must be serviced after LDG
LOW VOLTS BUS VOLTAGE TOO LOW
Remark: possible reasons are
- malfunction of electrical supply
- RPM too low
¾ Check circuit breakers
 On ground
⇒ Increase RPM
 If light still ON:
⇒ Terminate flight preparation
 In flight
⇒ Switch off unnecessary electrical equipment
 If light still ON:
⇒ Apply “ALTERNATOR”-caution procedure
ALTERNATOR ALTERNATOR FAILURE
¾ Check circuit breakers
 If all CBs OK:
⇒ ESSENTIAL BUS: ON
¾ Switch off unnecessary electrical equipment
¾ Land ASAP
¾ Be prepared for engine fail; be prepared for emergency landing

DA40 TDI ABNORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 9
Edition # 17.1 Does not replace the Airplane Flight Manual
INDICATIONS OUTSIDE OF GREEN
RANGE
RPM high
¾ Reduce power
¾ Keep RPM in green range with appropriate power lever setting
 If power not sufficient: land ASAP
Oil pressure (OP) high
¾ Check oil temperature
¾ Check coolant temperature
 If within green range
⇒ Oil pressure indication may be faulty; watch temperatures
 If outside of green range
⇒ Reduce power
⇒ Be prepared for engine fail; be prepared for emergency
landing
Oil pressure (OP) low
¾ Reduce power
¾ Be prepared for loss of oil and engine fail;
be prepared for emergency landing
Oil temperature (OT) high
¾ Check oil pressure
 If too low
⇒ Reduce power
⇒ Be prepared for loss of oil and engine fail;
be prepared for emergency landing
 If in green range
⇒ Reduce power
⇒ Increase airspeed
Oil temperature (OT) low
¾ Increase power
¾ Reduce airspeed
Fuel temperature high
¾ Reduce power
¾ Increase airspeed
Fuel temperature low
¾ Increase power
¾ Reduce airspeed

DA40 TDI ABNORMAL PROCEDURES
15.04.2017 Diamond Flight Training Page 10
Edition # 17.1 Does not replace the Airplane Flight Manual
Coolant temperature (CT) high
¾ Check WATER LEVEL caution light
 If “WATER LEVEL” OUT
 During climb:
⇒ Reduce power 10%
⇒ Increase airspeed 10 KIAS
⇒ If not returning to green range within 60 seconds:
reduce power as much as possible and increase
airspeed
 During cruise:
⇒ Reduce power
⇒ Increase airspeed
⇒ Check coolant temperature in green range
⇒ If not returning to green range: land ASAP
 If “WATER LEVEL” ON
⇒ Reduce power
⇒ Expect loss of coolant fluid
⇒ Be prepared for emergency landing
Coolant temperature (CT) low
Remark: During low power descent from high altitude coolant temperature
may decrease
¾ Check WATER LEVEL caution light
 If “WATER LEVEL” ON
⇒ Reduce power
⇒ Expect loss of coolant fluid
⇒ Be prepared for emergency landing
Gear temperature (GT) high
¾ Reduce power
¾ Increase airspeed
GENERATOR yellow range
¾ Switch off unnecessary electrical equipment
 If indication still outside of green range:
⇒ Land ASAP
VOLT low
¾ Check circuit breakers
¾ Switch off unnecessary electrical equipment
 If light still ON
⇒ Apply “ALTERNATOR”-caution procedure
VOLT high
¾ Land ASAP