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Flashcards in Ch 9 (change 7) Deck (72)
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1

FLIGHT CONTROL/MAIN ROTOR SYSTEM MALFUNCTIONS

 

 

1. LAND AS SOON AS POSSIBLE.
EMER ENG(S) SHUTDOWN after landing.

2

Pedal Bind/Restriction or Drive With No Accompanying Caution

1. Apply pedal force to oppose the drive.

② Check other pedals for proper operation.

TAIL SERVO switch - BACKUP.

  If normal control authority is not restored:

TAIL SERVO switch - NORMAL.

BOOST switch - OFF.

  If normal control forces are not restored:

BOOST switch - ON.

7. Collective - Adjust to determine controllability

for landing.

8. LAND AS SOON AS PRACTICABLE.

3

Ditching - Power Off

1. AUTOROTATE.
2. Cockpit doors jettison and cabin doors open
prior to entering water.
3. Apply full collective to decay rotor RPM as
helicopter settles.
4. Position cyclic in direction of roll.
5. Exit when main rotor has stopped.

4

Collective Boost Servo Hardover/Power Piston Failure

BOOST switch - Off.

2. LAND AS SOON AS PRACTICABLE.

 

Hardover failure of the collective boost servo will increase control forces (as much as 150 pounds) in the collective.

5

#1 and #2 HYD PUMP Cautions Appear

LAND AS SOON AS POSSIBLE. Restrict control movement to moderate rates.

6

APU OIL TEMP HI Caution Appears

APU CONTR switch - OFF. Do not attempt

restart until oil level has been checked.

7

CHIP INPUT MDL LH or RH Caution Appears

1. Establish single engine airspeed

ENG POWER CONT lever (affected engine) IDLE.

3. LAND AS SOON AS POSSIBLE.

 

8

Loss of Control at Low Airspeed/Hover or
TAIL ROTOR QUADRANT Caution Appears (Left
Rotation).

ENG POWER CONT lever(s) - Retard to decrease %RPM R below 100% and begin a

partial power descent.

2. Collective - Adjust to preserve %RPM R.

ENG POWER CONT levers - OFF (5 to 10 feet above touchdown).

4. Collective - Adjust for landing.

9

#1 and 2 FUEL FLTR BYPASS Cautions Appear

LAND AS SOON AS POSSIBLE

10

Electrical Fire In Flight.

BATT and GENERATORS switches - OFF.

2. LAND AS SOON AS POSSIBLE.

11

% RPM INCREASING/DECREASING (OSCILLATION)

1. Establish single engine airspeed.

② Slowly retard the ENG POWER CONT lever

on the suspected engine.

    If the oscillation stops:

③ Place that engine in LOCKOUT and manually

control the power.

4. LAND AS SOON AS PRACTICABLE.

    If the oscillation continues:

⑤ Place the ENG POWER CONT lever back to

FLY and retard the ENG POWER CONT

lever of the other engine.

⑥ Place the engine in LOCKOUT, manually

control the power.

7. LAND AS SOON AS PRACTICABLE.

12

1 TAIL RTR SERVO Caution Appears and
BACK-UP PUMP ON Advisory Does Not Appear or
#2 TAIL RTR SERVO ON Advisory Does Not Appear.

① TAIL SERVO switch - BACKUP.
2. BACKUP HYD PUMP switch - ON.
3. LAND AS SOON AS PRACTICABLE.

 

 

13

1or2 GEN Caution Appears

① Affected GENERATORS switch - RESET;

then ON.

If caution still appears:

② Affected GENERATORS switch - OFF.

14

#1 HYD PUMP Caution Appears

TAIL SERVO switch - BACKUP; then NORMAL.

2. LAND AS SOON AS PRACTICABLE.

15

#2 RSVR LOW and #2 HYD PUMP Cautions Appear With BACK-UP PUMP ON Advisory Appearing

POWER ON RESET s w i t c h e s Simultaneously press then release.

2. LAND AS SOON AS PRACTICABLE.

If BACK-UP RSVR LOW caution also appears:

SVO OFF switch - 2ND STG.

4. LAND AS SOON AS POSSIBLE.

      If #1 PRI SERVO PRESS caution appears, establish landing attitude, minimize control inputs, and begin a descent.

4. LAND AS SOON AS POSSIBLE.

 

16

MAIN XMSN OIL PRESS or MAIN XMSN OIL
TEMP Caution Appears / XMSN OIL PRESS LOW /
XMSN OIL TEMP HIGH

1. LAND AS SOON AS POSSIBLE.
If time permits:
2. Slow to 80 KIAS.
③ EMER APU START.
GENERATORS NO. 1 and NO. 2 switches - OFF.

17

Loss of Tail Rotor Thrust in Cruise Flight

1. Airspeed - Adjust to 80 KIAS or above.

2. AUTOROTATE - Maintain airspeed at or above 80 KIAS.

ENG POWER CONT levers - OFF (during deceleration when intended point of landing is assured).

18

ENG 1 or 2 Chip, Oil Press or Temp Caution appears

1. Establish single engine airspeed.

ENG POWER CONT lever – Retard (to reduce torque).

  If oil pressure is below minimum limits or if oil temperature remains above maximum limits:

EMER ENG SHUTDOWN (affected engine).

④ Refer to single engine failure emergency

procedure.

19

Engine Fire In Flight

1. Establish single engine airspeed.

ENG POWER CONT lever (affected engine) OFF.

③ ENG EMER OFF handle - Pull.

④ FIRE EXTGH switch - MAIN/RESERVE as Required.

5. LAND AS SOON AS POSSIBLE.

 

20

SAS OFF Caution Appears

SAS 1 and SAS 2 switches - Off.
FPS switch - Off.
3. LAND AS SOON AS PRACTICABLE

21

Lockout

(definition, warning, caution, procedure)

The term LOCKOUT is defined as manual control of engine RPM while bypassing ECU, or DEC functions (700ECU)(701C/D/CC EDECU)

-WARNING: going to ECU/DEC/EDECU LOCKOUT to obtain additional power does not remove Maximum Fuel Flow or Ng limits. % RPM R will decrease below normal operating range if Maximum Fuel Flow or Ng limits are exceeded.

-CAUTION: when engine is controlled with ENG POWER CONT lever in LOCKOUT, engine response is much faster and TGT limiting system is inoperative. Care must be taken not to exceed TGT limits and keeping % RPM 1 and 2 in operating range.

Procedure: ENG POWER CONT lever - Pull down and advance full forward while maintaining downward pressure, then adjust to set %RPM R as required.

22

APU Compartment Fire

APU fire T-handle - Pull.

FIRE EXTGH switch - MAIN/RESERVE as required.

23

Increasing RPM R

INCREASING RPM R

ENG POWER CONT lever (high % TRQ/TGT TEMP engine) - Retard. Maintain % TRQ appx 10% below other eng.

2. LAND AS SOON AS PRACTICABLE

 If the effected engine does not respond to ENG POWER CONT lever movement in the range between FLY and IDLE, the HMU may be malfunctioning internally. If thus occurs:

3: Establish single engine airspeed.

④ Perform EMER ENG SHUTDOWN (affected engine).

⑤ Refer to single-eng failure ep.

"ELEPR"

24

#2 RSVR LOW Caution Appears.

Procedure and Note

Pilot assist servos will be isolated; if they remain

isolated, proceed as follows:

BOOST - Off.

② FPS - Off.

3. LAND AS SOON AS PRACTICABLE

 

NOTE: Because the logic module will close the valve supplying pressure to the pilot-assist servos, BOOST SERVO OFF, SAS OFF, and TRIM FAIL cautions will appear.

 

25

Ditching - Power On

1. Approach to a hover.

2. Cockpit doors jettison and cabin doors open

prior to entering water.

3. Pilot shoulder harness - Lock.

4. Survival gear - Deploy.

5. Personnel, except pilot, exit helicopter.

6. Fly helicopter downwind a safe distance and hover.

7. ENG POWER CONT levers - OFF.

8. Perform hovering autorotation, apply full collective to decay rotor RPM as helicopter settles.

9. Position cyclic in direction of roll.
10. Exit when main rotor has stopped.

26

1or2 HYD PUMP Caut. Appears & Back-up ON Advisory does not appear

1. Airspeed - Adjust to a comfortable airspeed.

BACKUP HYD PUMP switch - ON.

       If BACK-UP PUMP ON advisory still does not appear:

FPS and BOOST switches - Off (for #2 HYD PUMP caution).

4. LAND AS SOON AS POSSIBLE.

27

ATTITUDE HEADING REFERENCE SYSTEM
(AHRS) HEADING DEVIATIONS.

①Set the AHRU Control Unit to DG mode.
②Manually update the HSI heading using the standby compass.
3. LAND AS SOON AS PRACTICABLE.

28

Emergency Landing In Wooded Areas - Power Off.

1. AUTOROTATE. Decelerate helicopter to stop all forward speed at treetop level.

2. Collective adjust to maximum before main rotor contacts tree branches.

29

LIGHTNING STRIKE

EP and Warning

ENG POWER CONT levers - Adjust as required to control % RPM.

2. LAND AS SOON AS POSSIBLE

 

Lightning strikes may result in loss of automatic flight control functions, engine controls, and/or electric power

30

#1 or #2 FUEL PRESS Caution Appears (critical)

ENG FUEL SYS selector on affected engine XFD.

FUEL BOOST PUMP CONTROL switches - NO. 1 PUMP or NO. 2 PUMP - ON (As applicable).

3. LAND AS SOON AS POSSIBLE.

EMER ENG SHUTDOWN after landing.

      b. Non-critical situations are those where single engine flight is possible.

① ENG FUEL SYS selector on affected engine XFD.

① FUEL BOOST PUMP CONTROL switches NO. 1 PUMP or NO. 2 PUMP - OFF (As applicable).

3. LAND AS SOON AS PRACTICABLE.