LEAR 45 ORAL STUDY GUIDE EXAM
QUESTIONS AND ANSWERS 100% PASS.
What kind of engines does the Lear 45 (sim) have?
Power Plant - ANS Garrett/Allied Signal TFE 731-20AR
Describe the two spools in the engine?
Power Plant - ANS Low Pressure (N1) spool: drives the fan. 4 Stage Compressor/ 3 Stage
Turbine
High Pressure (N2) spool: drives the accessory gearbox. 1 Stage Compressor/ 1 Stage Turbine
What does an amber flashing START annunciation on the EICAS indicate?
Power Plant - ANS That starter is still engaged above 51% N2
What does an amber engine SYNCH annunciation on the EICAS indicate?
Power Plant - ANS ENG SYNCH switch selected to N1 or N2 and the landing gear is not up and
locked
When should the engine oil level be checked?
Oil Systems - ANS Within 1 hour of shutdown (Pref 15 minutes)
What is the procedure if the oil level cannot be checked within 1 hour of shutdown?
Oil Systems - ANS Start engines and allow to stabilize at idle. Shut down engines and check oil
level.
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,What type of oil is approved for the engine?
Oil Systems - ANS Type II
How are the Dee Howard TR5045 thrust reversers controlled? Actuated?
Thrust Reversers - ANS Electronically controlled and Hydraulically actuated
What are the limitations associated with the thrust reversers?
Thrust Reversers - ANS Ground Only
Max reverse at 40 KIAS or greater
Not to be used on touch and go landings
Prohibited for backing up
Paved surfaces only
What setting are the Thrust Reversers limited to when the engine is in MANual mode?
Thrust Reversers - ANS IDLE DEPLOY
When are the thrust reversers armed?
Thrust Reversers - ANS Thrust lever at IDLE
ALL squat switches in GROUND mode
The APU, or GPU, is recommended at what temperatures
APU - ANS O deg C or below
When is the APU prohibited?
APU - ANS Flight Operations
During gravity fill refueling
During anti-icing/de-icing
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
, How long must you delay between selecting APU STOP and APU MASTER OFF?
APU - ANS 30 seconds
On the rotary test switch, what indications does the FIRE DET provide when tested?
Fire Protection - ANS Master WARN lights, triple chime will activate followed by a "LEFT
ENGINE FIRE....RIGHT ENGINE FIRE" voice.
Both red FIRE and all white EXTINGUISHER #1 and #2 ARMED switches (ENGINE panel) will
illuminate. Illumination of the FIRE switch indicates continuity of the fire detect systems and
illumination of the EXTINGUISHER #1 and #2 ARMED switches indicate continuity of the fire
extinguisher squibs
Red FIRE messages in ITTs will flash
Both red FIRE messages on RMU ENGINE PGE 1 will flash next to the N1 display
L and R BLEED AIR LEAK red CAS and CWP. This indicates continuity of the anti-ice bleed air
overheat sensor system
WING/STAB LEAK red CAS and CWP. This indicates continuity of the anti-ice bleed air overheat
sensor system.
APU FIRE Switch and red CAS will illuminate with the APU MASTER Switch OFF
Depressing and holding the SYS TEST/RESET Switch in the FIRE DET position for 15 seconds will
result in sounding of the APU fire horn. Holding the switch for 30 seconds will result in an APU
FAIL indication and APU shutdown
What does pushing an ENGINE FIRE switch accomplish?
Fire Protection - ANS Stops hydraulics and fuel to engine
Shuts off bleed air from engine
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
QUESTIONS AND ANSWERS 100% PASS.
What kind of engines does the Lear 45 (sim) have?
Power Plant - ANS Garrett/Allied Signal TFE 731-20AR
Describe the two spools in the engine?
Power Plant - ANS Low Pressure (N1) spool: drives the fan. 4 Stage Compressor/ 3 Stage
Turbine
High Pressure (N2) spool: drives the accessory gearbox. 1 Stage Compressor/ 1 Stage Turbine
What does an amber flashing START annunciation on the EICAS indicate?
Power Plant - ANS That starter is still engaged above 51% N2
What does an amber engine SYNCH annunciation on the EICAS indicate?
Power Plant - ANS ENG SYNCH switch selected to N1 or N2 and the landing gear is not up and
locked
When should the engine oil level be checked?
Oil Systems - ANS Within 1 hour of shutdown (Pref 15 minutes)
What is the procedure if the oil level cannot be checked within 1 hour of shutdown?
Oil Systems - ANS Start engines and allow to stabilize at idle. Shut down engines and check oil
level.
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,What type of oil is approved for the engine?
Oil Systems - ANS Type II
How are the Dee Howard TR5045 thrust reversers controlled? Actuated?
Thrust Reversers - ANS Electronically controlled and Hydraulically actuated
What are the limitations associated with the thrust reversers?
Thrust Reversers - ANS Ground Only
Max reverse at 40 KIAS or greater
Not to be used on touch and go landings
Prohibited for backing up
Paved surfaces only
What setting are the Thrust Reversers limited to when the engine is in MANual mode?
Thrust Reversers - ANS IDLE DEPLOY
When are the thrust reversers armed?
Thrust Reversers - ANS Thrust lever at IDLE
ALL squat switches in GROUND mode
The APU, or GPU, is recommended at what temperatures
APU - ANS O deg C or below
When is the APU prohibited?
APU - ANS Flight Operations
During gravity fill refueling
During anti-icing/de-icing
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
, How long must you delay between selecting APU STOP and APU MASTER OFF?
APU - ANS 30 seconds
On the rotary test switch, what indications does the FIRE DET provide when tested?
Fire Protection - ANS Master WARN lights, triple chime will activate followed by a "LEFT
ENGINE FIRE....RIGHT ENGINE FIRE" voice.
Both red FIRE and all white EXTINGUISHER #1 and #2 ARMED switches (ENGINE panel) will
illuminate. Illumination of the FIRE switch indicates continuity of the fire detect systems and
illumination of the EXTINGUISHER #1 and #2 ARMED switches indicate continuity of the fire
extinguisher squibs
Red FIRE messages in ITTs will flash
Both red FIRE messages on RMU ENGINE PGE 1 will flash next to the N1 display
L and R BLEED AIR LEAK red CAS and CWP. This indicates continuity of the anti-ice bleed air
overheat sensor system
WING/STAB LEAK red CAS and CWP. This indicates continuity of the anti-ice bleed air overheat
sensor system.
APU FIRE Switch and red CAS will illuminate with the APU MASTER Switch OFF
Depressing and holding the SYS TEST/RESET Switch in the FIRE DET position for 15 seconds will
result in sounding of the APU fire horn. Holding the switch for 30 seconds will result in an APU
FAIL indication and APU shutdown
What does pushing an ENGINE FIRE switch accomplish?
Fire Protection - ANS Stops hydraulics and fuel to engine
Shuts off bleed air from engine
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
