2A651 Volume 4 CDC UREs
- 1.(601) Which 54H60–91 propeller subassembly transmits engine torque to the propeller blades?
- A.
Barrel.
- B.
Control.
- C.
Low pitch stop.
- D.
Pitchlock regulator.
- 2.(601) 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.(601) On the 54H60–91 propeller, which is a function of the pitchlock regulator?
- A.
Stops the dome piston from increasing blade angle above 23.3 degrees.
- B.
Prevents the blades from decreasing pitch if hydraulic pressure is lost.
- C.
Prevents the cam bearing rollers from bottoming out in the track slopes.
- D.
Prevents the propeller from going into the beta range whend the throttle is positioned in alpha range
- 4.(601) On the 54H60–91 propeller, which pitchlock component mechanically holds the stationary and rotating 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.
- 5.(601) 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
- 6.6. (601) On the 54H60–91 propeller, which dome assembly part allows the rotating cam to turn while the stationary cam remains in a fixed position?
- A.
Roller shaft.
- B.
Track slopes.
- C.
Ball bearings.
- D.
Roller bearings.
- 7.(601) 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 blade angles.
- C.
Prevents the blades from decreasing pitch if an overspeed condition occurs.
- D.
Transmits engine torque to the blades.
- 8.(601) 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.
- 9.(602) On the 54H60–91 propeller, hydraulic fluid is directed from the pump housing to the barrel assembly through what component?
- A.
Valve housing.
- B.
Low pitch stop.
- C.
Transfer bearing.
- D.
Pitchlock regulator.
- 10.(602) 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.
- 11.(602) On the 54H60–91 propeller, during normal propeller operation, the output of which pumps is used?
- A.
Main pressure and main scavenge.
- B.
Standby pressure and main scavenge.
- C.
Auxiliary pressure and main pressure.
- D.
Auxiliary pressure and auxiliary scavenge.
- 12.(602) 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.
- 13.(602) 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.
- 14.(602) 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.
- 15.(602) The 54H60–91 propeller governor speeder spring tension positions the pilot valve to maintain what percent rpm in the beta range?
- A.
99 to 103%
- B.
104 to 108%
- C.
109 to 113%
- D.
114 to 118%
- 16.(603) On the 54H60–91 propeller, when the throttle is moved to the GROUND IDLE position, what degree setting does the coordinator pointer indicate on the protractor?
- A.
0 degrees.
- B.
18 degrees.
- C.
34 degrees.
- D.
90 degrees.
- 17.(603) 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.
- 18.(603) 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.
- 19.(603) What component in the T56 engine coordinator provides reference 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.
- 20.(604) On the 54H60–91 propeller, the output of what pump is sufficient to supply hydraulic pressure for normal propeller operation?
- A.
Auxiliary pressure.
- B.
Standby pressure.
- C.
Backup pressure.
- D.
Main pressure.
- 21.(604) On the 54H60–91 propeller, if the main filter becomes clogged, which valve opens to assure continued flow?
- A.
Check.
- B.
Bypass.
- C.
Low pressure relief.
- D.
High pressure relief.
- 22.(604) On the 54H60–91 propeller, which valve sets and maintains a pressure differential of about 100 psi between system pressure and the increase- or decrease-pitch pressure?
- A.
Check.
- B.
Bypass.
- C.
Low-pressure relief.
- D.
High-pressure relief.
- 23.(604) On the 54H60–91 propeller, when the backup valve is opened, the hydraulic pressure routed to the governor pilot valve is used for which operation?
- A.
Pitchlock.
- B.
Standby.
- C.
Reverse.
- D.
Airstart.
- 24.(604) On the 54H60–91 propeller, which pump is used to feather or unfeather the propeller during static propeller operation?
- A.
Main.
- B.
Backup.
- C.
Standby.
- D.
Auxiliary.
- 25.(604) On the 54H60–91 propeller, which type of valve opens to allow the output of the standby pump to combine with the output of the main pump?
- A.
Check.
- B.
Bypass.
- C.
Low pressure relief.
- D.
High pressure relief.
Questions: 124 | Attempts: 9967 | Last updated: Mar 22, 2022
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