TD 29 Flashcards
While starting the aircraft for a DAY VFR flight it is discovered that the #4 MFD will only display the PFD and Engine Instrument Caution Advisory System (EICAS) pages and the #2 MFD is inoperative. Is it still legal to fly the aircraft?
Only 3 are required to be operation. An MFD is considered operational if the Primary Flight Display (PFD) and Engine Instrument Caution Advisory System (EICAS) pages can be displayed and provide the required information.
What is the purpose of the Main Rotor Head Lead Stop installed on the forward edge of each elastomeric bearing endplate?
Each spindle has attached lead lag stops which prevent damage to the spindles during rotor brake operation.
A Main Rotor Head Lead Stop limits the amount of forward movement (lead) of each blade during rotor brake application. (Drivetrain-Student handout)
The Active Vibration Control System (AVCS) uses force generators to counterbalance airframe vibration. This is accomplished by mechanically generating additional airframe vibratory loads out-of-phase with the main rotor induced 4 per rev vibrations such that the resulting cockpit/cabin vibration is reduced. The AVCS maintains consistent vibration performance with varying rotor speeds from ________ through ________. An ____________advisory will appear when the system is not operating.
90% NR, 105% NR, AVCS INOP
Aside from hover hold, radar altitude hold and go-around mode, below what airspeed will the flight director become unusable?
Below 50 KIAS
What are the ground and flight indications for a Load Demand System Malfunction?
Ground: EPCL-idle (NG 3 to 4% higher than normal) EPCL-FLY (Torque Split)
In Flight: Takeoff during collective pull (increased torque split)
Low power descent (Collective at minimum)- (Rapid NP and NR rise)
Emergency Procedure:
On Ground- shutdown and consult maintenance
In Flight- 1. Land as soon as practicable 2. Perform a normal approach, avoiding low power autorative descents
Explain Collective/Airspeed to Yaw (Electronic Coupling)
Compensates for the torque effect caused by changes in collective position. It decreases tail rotor pitch as airspeed increases and the tail rotor and cambered fin become more efficient.
a) The #2 Flight Control Computer commands the yaw trim actuator to change tail rotor pitch as collective position changes.
b) The amount of tail rotor pitch change is proportional to airspeed. Maximum mixing occurs from 0 to 40 knots. The amount of mixing decreases until 100 knots, after which no mixing occurs.
When required to change members of the crew without shutting down engines, what function of IVHMS should be utilized?
End of Operation (END OF OP) To use: Select IVHMS(B4)- ADMIN(T3)- END OF OP(L1)- CONFRM(R2) To veiw saved data: Select IVHMS(B4)- USAGE(B1)- PREVOP USAGE(L3)
What is meant by the term “Cross-country flight?”
A flight extending beyond the local flying area or within the local flying area which is planned to terminate at a place other than the place of origin.
