R66 Non-Annunciator Light EP's

“Land immediately” def

• land on the nearest clear area where a safe LDG can be performed

• if required, be prepared to: enter autorotation during approach

“Land as soon as practical” def

• LDG site is at pilot’s discretion based on nature of problem and available LDG areas

• flight beyond nearest airport is not recommended

Power Failure - General // Caused By + Indications

Caused by:

• engine or drive system failure

Indications:

• low RPM horn

Engine failure indications:

• change in noise level

• nose left yaw

• an engine oil pressure light

• decreasing N1 or N2 RPM

Drive System Failure indications:

• unusual noise or vibration

• nose right or left yaw

• decreasing Rotor RPM while N2 RPM increasing

Power Failure - General // EP + Cautions

EP:

• lower collective to enter autorotation

• reduce A/s to power-off VNE (100 KIAS) or below

Cautions:

• aft cyclic is required when collective is lowered @ high A/s

• do not apply aft cyc. during touchdown or ground slide to prevent possible blade strike to tailcone

Power Failure Above 500’ AGL // EP

Autorotation

1. drop - lower collective (to maintain R RPM)

   1. R rudder

2. A/s: ~70 KIAS (glide)

   1. a little aft cyclic

3. Adjust collective

   1. keep R RPM 95% to 106%

   2. if too light and 95% unattainable, collective full down

4. select LDG spot + if possible, maneuver into headwind

5. a restart may be attempted if time allows

6. if unable to restart, turn off unnecessary switches and fuel valve

7. @ ~40’ AGL

   1. begin cyclic flare (to reduce rate of descent and fwd A/s)

8. @ ~8’ AGL

   1. fwd cyclic to level

   2. raise collective just before touchdown (to cushion landing)

9. Touchdown

Power Failure Between 8’ and 500’ AGL // EP

1. lower collective (to maintain rotor RPM)

2. Adjust collective

   1. keep R RPM 95% to 106%

   2. if too light and 95% unattainable, collective full down

3. maintain A/s until ground is approached, then begin cyclic flare (to reduce rate of descent and fwd A/s)

4. @ ~8’ AGL

   1. fwd cyclic to level

   2. raise collective just before touchdown (to cushion landing)

5. Touchdown

Power Failure Below 8’ AGL // EP

1. right pedal (to prevent yaw)

2. allow helicopter to settle

3. raise collective just before touchdown (to cushion landing)

Air Restart Procedure

EP:

• if N1 above 20%:

  • press start button (within 10 sec of power loss (i.e. an immediate restart))

• If N1 @ or below 20%:

  • fuel cutoff - pull OFF

  • Throttle - closed

  • Start button - push and release

  • N1 15% or above - push fuel cutoff ON

  • After peak MGT - Throttle full open

Air Restart Caution

Cautions:

• do not attempt restart if engine malfunction is suspected or before safe autorotation is established

Max Glide Distance Configuration vs Min Rate of Descent Configuration

Max Glide Distance Configuration

• A/s: ~90 KIAS

• R RPM: ~90%

Min Rate of Descent Configuration

• A/s: ~60 KIAS

• R RPM: ~90%

Emergency Water Landing - Power Off // EP

1. follow Power Failure Over Land EPs until contacting water + unlatch doors if time permits

2. when contact occurs — apply lateral cyclic (to stop rotors) (gouge: go RIGHT to prevent injury)

3. release seatbelt + clear A/c when rotors stop

Emergency Water Landing - Power On // EP

1. hover above water

2. unlatch doors

3. passengers exit A/c

4. fly safe distance away (to avoid injuring passengers)

5. Battery and Generator switches — OFF

6. Throttle — close

7. As A/c contacts water:

   1. Cyclic — level A/c

   2. Collective — full (up or down?)

   3. lateral cyclic (to stop rotors) (gouge: go RIGHT to prevent injury)

8. release seatbelt + clear A/c when rotors stop

Loss of Tail Rotor Thrust in Forward Flight // Indication + EP

Indications:

• nose right yaw which cannot be correct by full left pedal

EP:

1. Throttle - closed

2. Enter Autorotation

3. 70 KIAS if practical

4. Select LDG site

5. execute autorotation landing

Loss of Tail Rotor Thrust in Forward Flight // Note

Note:

• when a suitable landing site is not available, the vertical stabilizers may permit limited controlled flight @ low power settings & A/s above 70 KIAS

  • however, prior to reducing A/s, enter full Autorotation

Headset Audio Failure // EP + Caution

EP:

• land as soon as practical

Caution

• for A/c which provide low RPM horn through the audio system, pilot will not hear horn with failed headset

Engine Fire During Start or Shutdown // indication + EP

Indication

• excessive MGT -or-

• engine fire warning light ON

EP

1. Fuel cutoff - pull OFF

2. start button - Push and release

3. Fuel valve knob - pull OFF

4. battery switch - OFF (when MGT decreases to 150 deg C or if fire worsens)

5. if time permits, rotor brake

6. exit A/C

Engine Fire in Flight // EP

1. enter autorotation

2. cabin heat - OFF (if time permits)

3. if engine is running

   1. land immediately

   2. fuel cutoff - pull OFF

   3. fuel valve knob - pull OFF

4. If engine stops running

   1. fuel cutoff - pull OFF

   2. fuel valve knob - pull OFF

   3. complete autorotation LDG

5. If time permits, rotor brake

6. exit A/c

Electrical Fire // EP + note

1. Battery and Generator switches — OFF

2. cabin vents — open

3. land immediately

4. fuel cutoff — pull OFF

5. fuel valve knob — pull off

6. if time permits, rotor brake

7. Exit A/c

Note:

• low RPM warning system is inoperative w/ battery and generator switches both OFF

Tachometer Failure

If either R or N2 tach malfunctions:

• use remaining tach to monitor RPM

If unclear which is wrong/both are wrong,

• allow Power Turbine Governor to control RPM

• and LASAP

hydraulic system failure // indication

• heavy or stiff cyclic and collective controls

  • control is normal except for increase in stick forces

• intermittent and/or vibrating feedback (loss of hydraulic fluid)

hydraulic system failure // EP

1. HYD switch — verify ON

2. if hydraulic not restored, HYD switch — OFF

3. adjust A/s and flgiht condition as desired for comfortable control

4. LASAP

   • run-on landing — if suitable landing surface is available

Power Turbine Governor failure // indication + EP

indication

• rise or fall of N2 RPM

EP:

• If N2 over speeds:

  • attempt to control RPM w/ throttle

• If N2 under speeds:

  • verify throttle — full open

  • collective — lower (to control RPM)

• If governor failure expected — LASAP

• If manual RPM control is not possible:

  • collective — lower

  • throttle — close

  • complete Autorotation LDG (per power failure procedures)