Powertrain

Question 1

What is the purpose of the curvic-splined couplings on the main drive shaft?
A. To correct for main drive shaft whip
B. To compensate for misalignment between the transmission and the combining gearbox
C. To provide a third method of transmission mounting
D. To reduce strain on the main drive shaft

Answer 1

B. To compensate for misalignment between the transmission and the combining gearbox

Question 2

How are the curvic-splined couplings on the main drive shaft lubricated?
A. Packed with grease and should be inspected daily
B. Teflon-coated and require no lubrication
C. Self-lubricating and do not need to be inspected
D. Lubricated daily by maintenance personnel

Answer 2

A. Packed with grease and should be inspected daily

Question 3

What is the reason for the paint-striping on the main drive shaft and couplings?
A. To show any twisting of the coupling on the shaft
B. To indicate failure of the centering springs
C. For final balancing of the completed assembly
D. To indicate overheating of the couplings

Answer 3

D. To indicate overheating of the couplings

Question 4

What is the primary attachment between the main transmission and the airframe?
A. Four vibration-isolator mounts
B. Two friction dampers
C. Lift link
D. All the above

Answer 4

C. Lift link

Question 5

How is lubrication for the main transmission provided?
A. By a self-contained pressure lubrication system driven by the main transmission
B. By a self-contained splash system
C. By either the No. 1 or No. 2 engine lubrication system
D. By an external lubrication system, belt-driven by the tail rotor drive system

Answer 5

A. By a self-contained pressure lubrication system driven by the main transmission

Question 6

What does the lubrication system for the main transmission include?
A. An internal oil cooler and filter, both with a bypass indicator caution light, and three chip detectors
B. An external oil cooler, an external filter with bypass indicator, and three chip detectors
C. Both internal and external coolers and filters and a sump chip detector
D. Both internal and external filters, an external cooler with a bypass caution light, and three chip detectors

Answer 6

B. An external oil cooler, an external filter with bypass indicator, and three chip detectors

Question 7

If the CHIP XMSN caution light illuminates, what should the pilot do?
A. Perform an immediate autorotative landing since seizure of the transmission is imminent.
B. Be alert for transmission lubrication system failure.
C. Upon completion of the flight, have maintenance personnel check the sump chip detector for possible metal chips.
D. Check the remote XMSN CHIP IND indicators to determine which chip detector has been activated.

Answer 7

D. Check the remote XMSN CHIP IND indicators to determine which chip detector has been activated.

Question 8

How is overheating of the tail rotor drive shaft couplings and/or gearbox bearings indicated?
A. High oil temperature or low pressure on the 42/90 oil pressure gage
B. Illumination of the CHIP 42/90 BOX caution light
C. Discolored paint-striping on the couplings or bearings
D. Illumination of the TEMP warning light

Answer 8

C. Discolored paint-striping on the couplings or bearings