2A651 Volume 4
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- 1.Which 54H60-91 propeller subassembly transmits engine torque to the propeller baldes?
- A.
Barrel
- B.
Control
- C.
Low pitch stop
- D.
Pitchlock regulator
- 2.On the 54H60-91 propeller, which component delivers the actual propeller blade angle from the blade to the control assembly?
- A.
Microadjusting ring
- B.
Beta feedback shaft
- C.
Blade segment gear
- D.
Blade bushing
- 3.On the 54H60-91 propeller which pitchlock component mechanically holds the stationary and rotationg pitchlock ratchets apart during reversing and unfeathering operations?
- A.
Pitchlock control cam
- B.
Pitchlock ratchet piston
- C.
Externally threaded ring
- D.
Externally splined spacer ring
- 4.On the 54h60-91 propeller which component is used in place of a shim plate on the No. 1 blade?
- A.
Beveled thrust washer
- B.
Stationary ratchet
- C.
Beta segment gear
- D.
Blade barrel shim
- 5.On the 54h60-91 propeller what function is a task of the low pitch stop assembly?
- A.
Prevents the propeller from going into the beta range when the throttle is positioned in the alpha range
- B.
Limits cam travel and prevents the propeller from exceeding feather and reverse angles
- C.
Prevents the blades from decreasing pitch if an overspeed condition occurs
- D.
Transmits engine torque to the blades
- 6.On the 54h60-91 propeller which component provides a means for balancing the propeller?
- A.
Deicer contact ring holder
- B.
Hub mounting bulkhead
- C.
Front spinner
- D.
Afterbody
- 7.On the 54h60-91 propeller hydraulic fluid is directed from the pump housing to the barrel assembly through what component?
- A.
Valv housing
- B.
Low pitch stop
- C.
Transfer bearing
- D.
Pitchlock regulator
- 8.On the 54h60-91 propeller what is the function of the differential gear train assembly?
- A.
Drives the main and standby pressure pumps
- B.
Controls operation of the pilot valve and serves as an electrical ground
- C.
Drives the rotating sleeve when the throttle is positioned in the beta range
- D.
Transmits blade angle movement to the valve housing and drives the propeller governor flyweights
- 9.On the 54h60-91 propeller which pump assists the main pressure pump when large blade angle movements are required?
- A.
Main scavenge
- B.
Standby pressure
- C.
Auxiliary pressure
- D.
Auxiliary scavenge
- 10.On the 54h60-91 propeller which cam disarms the NTS system linkage when the throttle is positioned in the beta range?
- A.
Manual feather
- B.
Beta follow up
- C.
Speed set
- D.
Beta set
- 11.On the 54h60-91 propeller which valve contained in the valve housing controls the flow of hydraulic fluid to and from the dome assembly?
- A.
Standby
- B.
Feather
- C.
Backup
- D.
Pilot
- 12.The 54h60-91 propeller governor speeder ring tension positions the pilot valve to maintain what percent rpm in the beta range?
- A.
99-103%
- B.
104-108%
- C.
109-113%
- D.
114-118%
- 13.On the 54h60-91 propeller when throttle is moved to the GROUND IDLE position what degree setting does the coordinator pointer indicate on the protracter?
- A.
0
- B.
18
- C.
34
- D.
90
- 14.What switch located in the control quadrant activates the 54H -60-91 propeller governor speed bias servo assembly as the throttle is moved into the flight idle gate?
- A.
Beta indicator
- B.
Landing gear warning
- C.
Low speed ground idle
- D.
Synchrophaser disarming
- 15.The condition lever GND STOP position is only effective on the ground because the circuits made in this position are completed through what switches?
- A.
Landing gear touchdown
- B.
Low speed ground idle
- C.
Landing gear warning
- D.
Air start
- 16.What component in the T56 engine coordinator provides refrence signals to the electronic TD amplifier that are proportional to the desired TIT?
- A.
Feather shaft
- B.
Potentiometer
- C.
65 degree microswitch
- D.
66 degree microswitch
- 17.The purpose of the 54H60-91 pitchlock assembly is to prevent?
- A.
The loss of oil pressure
- B.
An engine overspeed due to a loss of power
- C.
The flow of hydraulic fluid to the pilot valve
- D.
An engine overspeed due to a loss of hydraulic pressure
- 18.On the 54h60-91 propeller what prevents engagement of the stationary and rotating ratchets at blad eangles below 25 degrees and above 55 degrees?
- A.
An overspeed of 103.5%
- B.
The pitchlock control cam
- C.
A loss of hydraulic pressure
- D.
Increase or decrease pitch pressure
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