Flight Controls

Question 1

What is the purpose of the flight control limit checks and what three items are they verifying?

Answer 1

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.

Question 2

When conducting a main rotor rig, when must 0.5 degrees be added to the required low and high collective blade angle averages?

Answer 2

(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

Question 3

What is the purpose of torque stripes? How do they differ from slippage marks?

Answer 3

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

Question 4

Is a rig check required after the pilot’s collective long control rod has been replaced? Why?

Answer 4

WP Does not say. But NO, unless the Rod End is adjusted.

Question 5

How could an out of rig condition or cable tension problem manifest itself during the flight control hydraulic system checks?

Answer 5

If the maximum allowable cyclic, collective stick and pedal jump exceeds 1/16 inch during the boost servo check.

Question 6

What will precede the procedural step that includes a CSI, emphasizing that this part or parts require special handling during MX?

Answer 6

Critical Safety Item alerts will precede the procedural step that includes a CSI

Question 7

What is the purpose of self retaining bolts?

Answer 7

Prevent components from disconnecting accidentally

Question 8

What are the two types of self-retaining bolts?

Answer 8

Impedance and locking types

Question 9

What is placed on the flight control bolts to show stabilized torque?

Answer 9

Torque stripes

Question 10

Which flight control provides lateral control of the helicopter?

Answer 10

Cyclic

Question 11

What components connect the cabin control rods to the input control rods on the hydraulic deck?

Answer 11

Collective, pitch, roll, and yaw torque shafts

Question 12

How many sections make up the tail rotor control cables?

Answer 12

Three: cabin, tail cone, and tail pylon

Question 13

What is particular about the torque shaft and lever?

Answer 13

The torque shafts and levers are a matched set

Question 14

Are the electromechanical trim actuators interchangeable?

Answer 14

No

Question 15

What are the inputs and outputs of the MMU?

Answer 15

Inputs: Collective, pitch, roll, and yaw
Outputs: Forward, aft, lateral, yaw, and No 1/No 2 LDS

Question 16

Where are the yaw lever bolt stops located?

Answer 16

Cabin overhead at station 300

Question 17

List the types of physical stops utilized on the 60M?

Answer 17

Bolt stops, roller limiters, and the servo pistons bottoming out

Question 18

What flight control inputs are affected by the roller limiters?

Answer 18

Pitch (FWD/AFT limiter) and lateral (left/right limiter)

Question 19

Does the flight control limit checks ensure the aircraft is properly rigged?

Answer 19

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.

Question 20

What would be the result if too much right pressure is applied to the cyclic during the lateral cyclic limit checks?

Answer 20

Clearance may be hard to detect. Shall be a clearance of .010 to .030 inches

Question 21

Must the M/R blades be installed on the aircraft for a main rotor complete rig?

Answer 21

NO. if not installed, all blade angle measurements must be checked after blades are installed.

Question 22

What are the four types of rigs?

Answer 22

M/R complete rig and rig check. T/R complete rig and rig check

Question 23

How much threads should be showing on the lower end of the pitch control rod?

Answer 23

NO MORE than .75inch

Question 24

What must be done if rig pins cannot be set during a main rotor rig check?

Answer 24

M/R Compete rig must be done

Question 25

What entry must be made in the aircraft logbook following the adjustment of the tail rotor cable during a rig?

Answer 25

9-11 flight hour tail rotor cable tension check entered in the helicopter logbook.

Question 26

After adjusting the tail rotor cables, what must be done before checking/setting the tail rotor cable tension?

Answer 26

the aircraft has to be at an even temp for one hour

Question 27

What does exceeding the breakout forces indicate during the flight control breakout forces check?

Answer 27

It can indicate possible improper installation, damage, or impending failure in the flight controls. (bushing, bearings, and bellcranks)

Question 28

After making corrections for the autorotation RPM check, what must be done?

Answer 28

A recheck of VH pedal position shall be performed.