Eng and Prop Sys Flashcards
Items on GMAD
- Hyd Pump
- AC Generator
- PGB OIl supply/scavenge
- Prop High Pres Oil pump and O/S Gov
- Prop pitch control unit
Starter Duty Cycle
(70” on, 60” off x 5) 20 min cooling
Major Engine Assemblies.
- Power Section
- Prop Gearbox
- Torquemeter
ATCS T/O power schedule
50-100% 40 kts
What happens when an ENG Fire handle is pulled? (9)
- BEEFSHOPP
- Nacelle BASOV closes
- Extinguisher Sw Available
- Extinguisher flow valves Positioned
- Fuel F/W SOV Closes
- FPMU SOV Closes
- Hyd F/W SOV Closes
- Eng Oil SOV Closes
- BAU Commands Prop AUX pump to energize for 20”
- 1553 message to FADEC to feather and shutdown the engine
Items on PUAD
- FPMU
- PMA
- Oil pressure and scavenge pumps
- ATS
Max MGT to begin ENG START
175°c
Max MGT on ENG Start
807°
Over rideable ACAWS during ENG START
- NO LIGHTOFF(A)
- STAGNATED START(A)
What propellers always feather w/o delay
Outboard
Over speed Gov
- NP
- 104.5%: PCU pump oil is diverted, counter weights work.
- 106%: Fuel Reduced
- 119%: ENG Shutdown
- NG
- 109%: Eng Shutdown
Max throttle angle for LSGI
30°
Green B displayed between what blade angle and spd
23-10.5°, 145 KTAS
Motor the Engine for ____” to clear fuel after an aborted start. How?
30”, Holding start sw to MOTOR
ENG Start: Reasons to Pull Fire Handle and sw to Stop
- MGT Rapid past 6 o’clock, approaching 807
- ENG MGT Hi Warning
- ENG Fire Warning
- START VLV OPEN Warning
- Visible indications of fire
- Visible Fluid leak near eng
Blades move to _____° via counterbalances if pump fails.
66°
Compressor Stages
14
The IGVs and first ________ stator stages have variable geometry.
5
FADECS per ENG
2
Free Turbine Stages
2
Number of fire bottles
2
FADEC Schedule
Forward: 100%, Blade°
Ground: 99%, Fuel Flow
Reverse: 101%, Blade°
Gas Turbine Stages
2
What fire handle gets priority
Last one pulled
The FADEC control blade angle scheduling to assist in engine out stops. Above _____ CAS, the outboard propellers are set to ______° blade angle. Between ______ and _______ knots, the outboard propellers increase from ______° to _______° blade angle and between 70 and 50 knots
decrease back to ______°. The inboard propellers are set at -______° blade angle at all CAS down to 70 knots. From 70 to 50 knots, they are set to 1° blade angle. Below 50 knots all propeller blade angles are set at 1°
110CAS, 1°, 110-90kts, 1-8°, 1°, 2°
Min Start PSI
22psi
NG limit prior to ground ENG RE-START
0% for 30”
Feather Oil reserve QTY
.66 gal
LSGI for ______ before shutdown.
2 min
T/O Px = Max Cont when?
when < 28.3°c at sea level
T/O = _______ hp at
4,700, 39.45°c
What does PMA Power and When?
- Igniters, NG > 14%
- FADEC, NG > 40%
FADEC atmpts auto relight until NG
<56%, then FADECs Cut Fuel
What does Start Switch to STOP do?
- Shuts of Fuel to the engine
- Turns off respective boost pump
- NAC SOV Closed (if in Auto)
- Closes Start Valve, IF starting
- Deenergizes Ignition, IF starting
What does Start Switch to RUN do?
- Energizes Respective Boost Pump
- NAC SOV Open
Why NG 0 for 30” before Engine Start?
allows the NG Overspeed Circuit to be check
What ACAWS is Expected with an Air Start?
- PROP “X” NO 119% PROTECT caution
- FADEC May not perform Propeller Overspeed Circuit check. Follow Crew Actions in QRH
When Exiting Hotel Mode, what may happen when unfeathering one propeller at a time.
MC shuts down the engine because HP increases without power lever movement. Engine restart is permissible.
Oil Cooler Flap Position
- Ground:
Opens > 75° Closes < 60° - Dirty Flight:
Opens > 82° Closes <76°
Aux Feather pump runs for _______ sec
20
