Difference between revisions of "TASK 1028"

Latest revision as of 05:49, 20 February 2020

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

TASK 1028
PERFORM HOVER POWER CHECK

CONDITIONS: In a UH-1 helicopter at an appropriate hover height and with performance planning
information available.

STANDARDS: Appropriate common standards plus these additions/modifications:
1. Determine if sufficient power is available to perform the mission.
2. Determine if wind condition exceeds directional control margin (DCM) or longitudinal cyclic
values.
3. Determine when the approach can be terminated to the ground due to center of gravity (CG)
limits, if applicable (using indicated fuel).

DESCRIPTION:
4. Crew actions.

 a. The pilot on the controls (P*) will announce his intent to bring the aircraft to a hover. The
 P* will remain focused outside the aircraft during the maneuver and will announce when the
 aircraft is stabilized at the desired hover altitude.
 
 b. The pilot not on the controls (P) and nonrated crewmember (NCM) will announce when
 ready for takeoff and will remain focused outside the aircraft to assist in clearing and to
 provide adequate warning of obstacles. They will acknowledge clear (left, right, rear, and
 above, as appropriate).
 
 c. The P will monitor the aircraft instruments. If the IGE NO-GO torque value is indicated
 prior to reaching the planned hover height used during the performance planning, the P will
 tell the P* to stop the hover power check and land the aircraft. The PC will confirm the GO /
 NO-GO torque and adjust the mission as required.
 
 d. The PC will determine whether the aircraft is capable of completing the assigned mission
 and will ensure that aircraft limitations will not be exceeded.
 
 e. The P will announce when the hover power check is completed.

5. Procedures.
 
 a. The P* should use a 5-foot stationary hover (2-foot stationary hover when using tabular
 data) when performing this task unless the mission or terrain constraints dictate otherwise. If
 another hover height is required, the P* should use that height to compute GO/NO-GO torque
 and predicted hover torque.
 
 b. The P will monitor the aircraft instruments and verify the power check. The P will
 compare the actual performance data to that computed and announce the results to the P*.
 The crew will evaluate and determine why there are any differences between computed and
 actual performance data. Any time the load or environmental conditions change significantly
 (200 pounds gross weight increase, 500 feet PA increase, or ± 5 degrees Celsius), the
 crewmembers will perform additional hover power checks and, if necessary, recompute the
 PPC using tabular data. (See Task 1011.)

Note: If the torque required to maintain a stationary hover does not exceed the GO/NO-GO
torque out-of-ground effect (OGE), any maneuver requiring OGE/IGE power or less may be
attempted. If the torque required to maintain a stationary hover exceeds the GO/NO-GO
torque OGE but does not exceed the GO/NO-GO torque IGE, only IGE maneuvers may be
attempted.

NIGHT OR NIGHT VISION GOGGLE CONSIDERATIONS: The crew must use proper
scanning techniques to avoid excessive drift.

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

REFERENCES: Appropriate common references.