Difference between revisions of "TASK 2125"
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Latest revision as of 08:29, 20 February 2020
Exract: TC 1-211 AIRCREW TRAINING MANUAL UTILITY HELICOPTER, UH-1H/V SERIES TASK 2125 PERFORM PINNACLE / RIDGELINE OPERATION CONDITIONS: In a UH-1 helicopter with the before-landing check completed. STANDARDS: Appropriate common standards plus these additions/modifications: 1. Rated. a. Reconnaissance. (1) Establish desired altitude ±100 feet. (2) Establish desired airspeed, ±10 knots indicated airspeed (KIAS). (3) Properly perform a continuous reconnaissance. b. Approach. (1) Maintain ground track alignment with the selected approach path with minimum drift. (2) Maintain a constant approach angle. (3) Maintain an appropriate rate of closure. (4) Execute a smooth, controlled termination in the forward, usable one-third of the landing area. c. Takeoff. (1) Perform a hover power check, if required, and complete a before-takeoff check without error. (2) Perform an airspeed-over-altitude takeoff while maintaining heading ±10 degrees. 2. Nonrated Ensure all passengers and cargo are secure prior to final approach. DESCRIPTION: 1. Crew actions. a. The pilot on the controls (P*) will remain focused outside the aircraft to evaluate the suitability of the area; determine the effects of the wind; and clear the aircraft throughout the approach, landing, and takeoff. The P* will announce any deviation from the approach, to include go around. The P* will focus attention outside the aircraft during the takeoff maneuver, announce intent to take off, and give the direction of takeoff. b. The pilot not on the controls (P) will acknowledge any intent to deviate from the approach or takeoff. The P and nonrated crewmember (NCM) will acknowledge when ready for takeoff and remain focused outside the aircraft to assist in clearing and to provide adequate warning of obstacles. They will announce when their attention is focused inside the aircraft (for example, when monitoring cockpit instruments, performing map navigation, or verifying the security of passengers or equipment). c. The NCM will perform the following actions: (1) During the approach, assist the aviator in conducting a low reconnaissance of the landing area to determine its suitability. Advise the P* when the aircraft is clear of obstacles. (2) If requested by the P*, call out the altitude down to 25 feet in 25-foot increments beginning at 100 feet AGL). Then call out altitude from 25 feet to 5 feet in 5-foot increments and from 5 feet to touchdown of the skids in 1-foot increments. (3) After the aircraft is stabilized on the ground, conduct a ground reconnaissance as directed by the PC. Note obstacles and evaluate the suitability of the pinnacle or ridgeline for future operations. (4) If requested by the P*, call out the skid height up to 5 feet in 1-foot increments during the takeoff. Then call out the skid height to 25 feet in 5-foot increments and to 100 feet in 25-foot increments. Advise the aviator when the aircraft is clear of obstacles. Note: If two nonrated crewmembers are assigned to the flight, the crewmember not engaged in calling out the aircraft height should keep the P* informed of obstacles to the rear. 2. Procedures. a. The P* will select a flight path, an airspeed, and an altitude that allows them to observe the landing area. When practical, the P* will position the aircraft on the windward side of the pinnacle or ridgeline. The P* will select a touchdown point in the forward, usable one-third of the landing area, announce termination of the approach to a hover or to the ground, and announce the tentative takeoff path. The approach angle can vary from a shallow to a steep angle, depending on the wind (demarcation line), density altitude, gross weight (GWT), and availability of forced landing areas. The crew will continue the reconnaissance on the final approach to confirm information previously gained. The rate of closure on the final approach may be difficult to determine because of motion parallax, until the aircraft is close to the landing point. The P* will reduce airspeed to slightly above effective translational lift (ETL) until the rate of closure can be determined. The P* will then adjust the rate of closure to not faster than that of a brisk walk. The P* will execute a go-around if the reconnaissance reveals that a safe landing cannot be accomplished. b. The P and NCM will confirm the suitability of the area, assist in clearing the aircraft, and provide adequate warning of traffic or obstacles. c. After touchdown, the P* will check aircraft stability as they lowers the collective and, if aircraft movement is detected, will reposition the aircraft. The crew will perform a ground reconnaissance and clear the aircraft. The P will perform the before-takeoff check and verify a hover power check if required. The crew will clear the aircraft prior to and during takeoff. d. The P* will execute an airspeed-over-altitude takeoff and announce his intent to abort or alter the takeoff if required. If the takeoff requires clearing obstacles, the P* will use power as necessary to clear the obstacles while maintaining a constant climb angle and ground track. After clearing the obstacles, the P* will adjust the aircraft’s pitch attitude to gain forward airspeed. Note: To successfully operate in small areas, it may be necessary to place the nose of the aircraft over the edge of the lancing area. This may cause a loss of important visual references when on final approach. All crewmembers must assist in providing information on aircraft position in the landing area. Note: Hover out-of-ground effect (OGE) power is required for this task. NIGHT OR NIGHT VISION GOGGLE CONSIDERATIONS: 1. Awareness of the various methods of making a suitable evaluation at night (for example, lines of contrast) is essential. Crews should treat visual obstacles the same as physical obstacles. 16 May 2007 4-177 TC 1-211 2. When flying above terrain flight altitudes, crews should keep in mind the inherent limitations of the NVG. They should also be aware of the increased difficulty in estimating the rate of closure and make the approach more slowly. TRAINING AND EVALUATION REQUIREMENTS: 1. Training will be conducted in the aircraft. Academic and flight training may be conducted at the High Altitude Army Aviation Training Site (HAATS), or utilizing the HAATS Mountain Training program of instruction (POI) if available, or using the recommended program of instruction in FM 1-202, chapter 4. 2. Evaluation will be conducted in the aircraft. REFERENCES: Appropriate common references.