CONTROL MALFUNCTIONS

Question 0

Fixed or Restricted Collective Control in Forward Flight

Answer 0

1. Airspeed ………………………………. Adjust for level flight. (if possible)

If continued flight is not possible with control malfunction evident (terrain clearance not assured):

2. External stores………………………………………… Jettison. (as appropriate)
3. FOD interference………………………………………… Check. (time/inflight-conditions permitting)
4. AFCS …………………………………………………. Disengage. (inflight conditions permitting)
5. Collective …………………………………………………..Adjust. (if possible)

If normal control forces are not restored:

6. ACFS AP2 then AP1………………………………….. Engage.
7. Land as soon as possible.

Question 1

Fixed or Restricted Collective Control in Hover OGE with Immediate Landing Possible

Answer 1

1. WP-P AUDIO OFF…………………………………………Select.
2. ECP TRG mode……………………………………………Select.
3. ECP OEI Power SUP (TRG)……………………………Select.
4. ECP ENG2 (or ENG1) SLOW………………………….Select.

NR shall droop (not below 290NR). If not descending:

5. ECP OEI Power MAX (TRG)…………………………..Select.

If still not descending:

6. Collective OEI Power INT (TRG)…………………….Select.

When landed:

7. EMER ENG SHUTDOWN…………………………….Perform. (both engines)

Question 2

Autorotation Landing with Tail Rotor Malfunction

Answer 2

1. Airspeed ……………………. Maintain 100 (not 80!) KIAS if possible.

When satisfied that the approach will permit successful completion of the autorotation to the desired landing area:

2. EMER ENG SHUTDOWN…………………………….. Perform. (both engines)
3. Approx 100 ft RAD ALT ………………………. Initiate flare.
4. Landing ……………………………………………Eliminate drift prior to touchdown and reduce forward speed to the minimum possible.
5. Collective …………………………………….Cushion landing. (Be prepared for a touchdown with uncontrolled yaw)

Question 3

Loss of Tail Rotor Thrust or Insufficient Thrust in Hover or Insufficient Thrust at Low Speeds

Answer 3

1. Collective ……………………………….. Lower immediately.

At or approaching hover height:

2. EEP…………………………………………………….. SHUT OFF. (both engines)
3. Collective …………………………………….Cushion landing.

Question 4

Excessive Tail Rotor Thrust in Hover IGE with Immediate Landing Possible

Answer 4

1. Collective ……………………………….. Lower immediately.
2. Collective …………………………………….Cushion landing.
3. EMER ENG SHUTDOWN…………………………… Perform.

Question 5

Loss of Tail Rotor Thrust or Loss of Tail Rotor Control in Forward Flight

Answer 5

1. Autorotate.
2. AUTOROTATION LANDING WITH TAIL ROTOR MALFUNCTION ……………………………………….. Perform.

If continued flight is possible:

3. Airspeed ……………………………………Maintain ≥80 KIAS.