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R22 emergency procedures
Robinson R22 Helicopter - Emergency Procedures
14
Aviation
Not Applicable
08/28/2011

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Cards

Term
Power Failure Below 8 feet AGL
Definition
  1. Apply right pedal
  2. Allow aircraft to settle
  3. Raise collective just before touchdown to cushion landing.
Term
What is the configuration for Max glide distance?
Definition
  1. Airspeed aprox. 75 KIAS.
  2. Rotor RPM aprox. 90%.
  3. Best glide ratio is aprox. 4:1 or one nautical mile per 1500 feet AGL.

CAUTION:  Increase rotor RPM to 97% minimum when autorotating below 500 feet AGL.

Term
What is the air restart procedure?
Definition
  1. Mixture - full rich
  2. Primer (if installed) - down and locked.
  3. Throttle - closed, then cracked slightly.
  4. Actuate starter with left hand.

CAUTION: Do not attempt restart if engine malfunction is suspected or before safe autorotation is established. 

Term
What is the procedure for power failure above 500 feet AGL?
Definition
  1. Lower collective immediately to maintain RPM and enter normal autorotation.
  2. Establish a steady glide at approximately 65 KIAS.
  3. Adjust collective to keep RPM in green arc or apply full down collective if light weight prevents attaining above 97%.
  4. Select landing spot and, if altitude permits, maneuver so landing will be into wind.
  5. A restart may be attempted at pilot's discretion if sufficient time is available.
  6. If unable to restart, turn off unnecessary switches and shut off fuel.
  7. At about 40 feet AGL, begin cyclic flare to reduce rate of descent and forward speed.
  8. At about 8 feet AGL, apply forward cyclic to level ship and raise collective just before touchdown to cushion landing.  Touc down in level attitude with nose straight ahead.

Note: If power failure occurs at night, do not turn on landing lights above 1000 feet AGL to preserve battery power. 

Term
What is procedure for power failure between 8 feet and 500 feet AGL?
Definition
  1. Takeoff operation should be conducted per the Height-Velocity Diagram.
  2. If power failure occurs, lower collective immediately to maintain rotor RPM.
  3. Adjust collective to keep RPM in green arc or apply full down collective if light weight prevents attaining above 97%.
  4. Maintain airspeed until ground is approached, then begin cyclic flare to reduce rate of descent and forward speed.
  5. At about 8 feet AGL, apply forward cyclic to level ship and raise collective just before touchdown to cushion landing.  Touch down with skids level and nose straight ahead. 
Term
What is the best airspeed for max glide distance?
Definition
Aprox. 75 KIAS
Term
What is the best rotor RPM for max glide distance?
Definition
90%
Term
What is the glide ratio in max glide configuration?
Definition
4:1 or one nautical mile per 1500 feet AGL
Term
What does land immediately mean?
Definition
Land on the nearest clear area where a safe normal landing can be performed.  Be prepared to enter autorotation during the approach, if required.
Term
What does land as soon as practical mean?
Definition
Land at the nearest airport or other facility where emergency maintenance may be performed.
Term
What can cause a power failure?
Definition
Engine or drive system failure.
Term
What is an indication of power failure?
Definition
Low RPM horn
Term
What are some indications of engine failure?
Definition
Change in noise level, nose left yaw, oil pressure light or decreasing engine RPM.
Term
What are some indications of drive system failure?
Definition
Unusual noise or vibration, nose right or left yaw, or decreasing rotor RPM while engine RPM is increasing.
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