Difference between revisions of "TASK 1327"

Latest revision as of 05:52, 20 February 2020

Exract: TC 1-211 AIRCREW TRAINING MANUAL UTILITY HELICOPTER, UH-1H/V SERIES

TASK 1327
PERFORM LOW-LEVEL AUTOROTATION

CONDITIONS: In a UH-1 helicopter; with the emergency procedures training criteria in AR 95-1
met and the before-landing check completed; given the entry altitude and airspeed; and with the
aircraft aligned with the touchdown area.

STANDARDS: Appropriate common standards plus these additions/modifications:
1. Establish entry altitude as directed.

2. Establish entry airspeed as directed.

3. Perform a smooth, progressive deceleration.

4. Apply initial pitch at approximately 15 feet above ground level (AGL).

5. Maintain heading alignment at touchdown ±5 degrees.

CAUTION
Do not lower collective pitch to provide braking action.

DESCRIPTION:
1. Crew actions.
 a. The pilot on the controls (P*) will remain focused outside the aircraft and announce
 entering the autorotation. If directed by the instructor pilot (IP) to perform go-around or
 terminate with power, the P* will smoothly and positively roll the throttle to the full open
 position and, with the “needles joined,” execute the appropriate maneuver.
 
 b. The IP will acknowledge the entry and visually confirm that the rotor revolutions per
 minute (RPM) and N1 remain within limits. If the rotor RPM does not remain within limits,
 the IP will immediately direct the P* to terminate with power or go around if appropriate.
 
 c. The nonrated crewmember (NCM) will continually monitor the condition of the aircraft,
 assist in aircraft clearance and obstacle avoidance, and perform other tasks as directed by the
 pilot in command (PC).

2. Procedures.
 a. On the base leg, establish an angle of descent to arrive at an altitude of 50 feet above
 highest obstacle (AHO) prior to the entry point while maintaining visual contact with the
 landing area. Establish an entry point that ensures touchdown in the intended landing area. At
 the point of entry, ensure that the aircraft is at the proper altitude and airspeed and in trim
 with cruise power applied. Simultaneously, lower the collective to the fully down position,
 retard the throttle to engine-idle stop, and apply aft cyclic to maintain entry altitude. Maintain
 rotor RPM within limits, and adjust the pedals to maintain aircraft alignment with the landing
 area. Apply cyclic to maintain entry altitude until intercepting a standard autorotation descent
 profile.
 
 b. As the aircraft begins to descend, terminate the maneuver the same as for an autorotation
 (Task 1082).


NIGHT OR NIGHT VISION GOGGLE CONSIDERATIONS:
1. Attitude control is critical during night autorotations.

2. Altitude, apparent ground speed, and rate of closure are difficult to estimate at night. Crews
must use proper scanning techniques.

3. The crew must be aware that the surrounding terrain or vegetation may decrease contrast and
degrade depth perception. If the searchlight or landing light is used, it should be turned on prior
to entering the maneuver. Ensure that the searchlight or landing light is in the desired position.

4. Use of the white light may impair night vision for several minutes. Therefore, exercise added
caution if resuming flight before reaching full dark adaptation.

TRAINING AND EVALUATION REQUIREMENTS:
1. Training will be conducted in the aircraft.
2. Evaluation will be conducted in the aircraft.

REFERENCES: Appropriate common references.