Powerplant

Question 1

Thrust

Answer 1

18,250 lbs

Question 2

Accessory gearbox (AGB)

Answer 2

o Fuel pump
o (FMU) Fuel metering unit
o HP rotor speed sensor
o Hydraulic pump
o IDG
o Oil pump
o (PMA) permanent magnet alternator
o Starter

Question 3

FADEC consists of

Answer 3

3 major parts
o Electronic Engine Control (EEC)
o Data Entry Plug (DEP)
o Permanent Magnet Alternator (PMA)
 Primary source of power once engine > 35% HP

Question 4

EEC

Answer 4

 A and B, one active other standby
 Identical software
 If an issue control given to healthiest channel
 Active channel alternates each flight cycle with Fuel Control Switch

Question 5

Check Oil

Answer 5

o 5 minutes to 24 hours after shutdown
If outside of these times then
* Idle engine for 10 mins, shutdown, check after 5 mins

Question 6

Rotorbow

Answer 6

o If Engine shutdown between 20 minutes and 5 hours
o Preforms a 50 second dry cranking cycle
o If TGT not < 120 C within 2 mins, auto aborts

Question 7

Autostart Abort for

Answer 7

o HP doesn’t reach 12% within 50 secs during rotorbow
o No fuel flow within 2 mins of completion of rotorbow
o Idle speed not achieved < 2 mins of igniter commanded on
o HP < 41.2% after SAV open for 3 mins
o TGT not < 120 C within 2 minutes of starting
o TGT overtemp > 800 C
o No TGT signal
o Loss of HP signal to EEC

Question 8

AUTO-RELIGHT

Answer 8

Always active when engine running
Initiated by EEC on detection of flameout
o Energises both igniters until 20 secs after relight detected
o Schedules fuel flow until relight detected
o If engine speed falls below 30% HP - Shuts down

Question 9

QUICK RELIGHT Provides auto relight if

Answer 9

Fuel control selected OFF then quickly back to ON
 If back to RUN within 15 secs
In Flight only
o < 16,500 ft
o 170 – 200 kts

Question 10

Airstart envelope

Answer 10

< FL300

Question 11

Assisted Airstart envelope

Answer 11

Engine TGT > 30 C
 FL250 – FL300 - 200 kts to VMO
 < FL250 - 160 kts to VMO
Engine TGT < 30 C
 < FL250 - 220 kts to VMO

Question 12

Windmill envelope

Answer 12

Minimum HP 8%
Engine TGT > 30 C - 270 kts to VMO
Engine TGT < 30 C - 280 kts to VMO

Question 13

Engine Start Cycle

Answer 13

Consecutive Start Attempts and/or Crank Cycles
o 2 start cycles with max 3 mins per cycle
o 3 start cycles with max 2 mins per cycle
Delay 15 secs between start cycles
After 6 mins – delay use of starter > 15 mins

Starter re-engagement
* Starter may be re-engaged < 49.7%

Question 14

Max TGT prior to start

Answer 14

120 C

Question 15

Max start TGT

Answer 15

800 C

Question 16

Max relight TGT

Answer 16

850 C

Question 17

Max TGT T/O

Answer 17

950 C for 2 mins, HP% 102.2

Question 18

Max TGT MCT

Answer 18

940 C unrestricted, HP% 102.2

Question 19

Max XWC for start

Answer 19

30 kts

Question 20

Max TWC for start

Answer 20

20 kts

Question 21

Min Oil temp for ground start

Answer 21

-35 C

Question 22

Min Oil temp for greater than taxi power

Answer 22

20 C

Question 23

Min Oil temp for remote oil filling

Answer 23

0 C

Question 24

Max Oil temp

Answer 24

170 C

Question 25

Max Oil temp for GA

Answer 25

175 C

Question 26

Max XWC / TWC taxying

Answer 26

40 kts

Question 27

Min Oil pressure

Answer 27

25 psi

Question 28

Engine Idle Times

Answer 28

5 mins prior to T/O
3 mins prior to shutdown