Flight Controls Flashcards
What is the purpose of the flight control limit checks and what three items are they verifying?
It is designed to verify that the controls hit the proper control stops or limiters. Bolt stops, Mixing Unit Roller Limiters, and Servo Piston Bottoming Out.
When conducting a main rotor rig, when must 0.5 degrees be added to the required low and high collective blade angle averages?
(WP1214)
-Extend copilot’s collective stick to its flight ready position. On copilot’s collective stick, CHECK THAT LOW COLLECTIVE STOPBOLT IS 0.630 TO 0.700-INCH ABOVE SUPPORT (Figure 1, Detail B). If copilot’s stopbolt is beyond limits
-Cycle the collective three times and hold the collective stick in full up position. Measure and average the red (No. 1) blade at 90, 180, 270, and 0 degree positions. THE AVERAGE BLADE ANGLE MUST BE 14.3 ± 0.5 DEGREES. If average is not 14.3 ± 0.5 degrees
What is the purpose of torque stripes? How do they differ from slippage marks?
Torque stripes are used to identify all fasteners with critical characteristic torque or installation procedures. Torque stripes are a painted on stripe that is applied to either end of a fastener. Torque stripes are similar to slippage marks, however, they are not used to show relative motion of fasteners
Is a rig check required after the pilot’s collective long control rod has been replaced? Why?
WP Does not say. But NO, unless the Rod End is adjusted.
How could an out of rig condition or cable tension problem manifest itself during the flight control hydraulic system checks?
If the maximum allowable cyclic, collective stick and pedal jump exceeds 1/16 inch during the boost servo check.
What will precede the procedural step that includes a CSI, emphasizing that this part or parts require special handling during MX?
Critical Safety Item alerts will precede the procedural step that includes a CSI
What is the purpose of self retaining bolts?
Prevent components from disconnecting accidentally
What are the two types of self-retaining bolts?
Impedance and locking types
What is placed on the flight control bolts to show stabilized torque?
Torque stripes
Which flight control provides lateral control of the helicopter?
Cyclic
What components connect the cabin control rods to the input control rods on the hydraulic deck?
Collective, pitch, roll, and yaw torque shafts
How many sections make up the tail rotor control cables?
Three: cabin, tail cone, and tail pylon
What is particular about the torque shaft and lever?
The torque shafts and levers are a matched set
Are the electromechanical trim actuators interchangeable?
No
What are the inputs and outputs of the MMU?
Inputs: Collective, pitch, roll, and yaw
Outputs: Forward, aft, lateral, yaw, and No 1/No 2 LDS
Where are the yaw lever bolt stops located?
Cabin overhead at station 300
List the types of physical stops utilized on the 60M?
Bolt stops, roller limiters, and the servo pistons bottoming out
What flight control inputs are affected by the roller limiters?
Pitch (FWD/AFT limiter) and lateral (left/right limiter)
Does the flight control limit checks ensure the aircraft is properly rigged?
NO. It is designed to verify that the control hit the proper control stops or limiters and does not completely verify that the helicopter is properly rigged.
What would be the result if too much right pressure is applied to the cyclic during the lateral cyclic limit checks?
Clearance may be hard to detect. Shall be a clearance of .010 to .030 inches
Must the M/R blades be installed on the aircraft for a main rotor complete rig?
NO. if not installed, all blade angle measurements must be checked after blades are installed.
What are the four types of rigs?
M/R complete rig and rig check. T/R complete rig and rig check
How much threads should be showing on the lower end of the pitch control rod?
NO MORE than .75inch
What must be done if rig pins cannot be set during a main rotor rig check?
M/R Compete rig must be done
What entry must be made in the aircraft logbook following the adjustment of the tail rotor cable during a rig?
9-11 flight hour tail rotor cable tension check entered in the helicopter logbook.
After adjusting the tail rotor cables, what must be done before checking/setting the tail rotor cable tension?
the aircraft has to be at an even temp for one hour
What does exceeding the breakout forces indicate during the flight control breakout forces check?
It can indicate possible improper installation, damage, or impending failure in the flight controls. (bushing, bearings, and bellcranks)
After making corrections for the autorotation RPM check, what must be done?
A recheck of VH pedal position shall be performed.
