What are the proper approach directions for UH-60, UH-1H, and CH-47?

What are the proper approach directions for UH-60, UH-1H, and CH-47?

• A. UH-60 45 degrees; UH-1H and CH-47 90 degrees
• B. UH-60 90 degrees; UH-1H and CH-47 45 degrees
• C. UH-60 0 degrees; UH-1H and CH-47 0 degrees
• D. UH-60 60 degrees; UH-1H and CH-47 30 degrees

Answer: (B)

Approach direction is chosen to keep rotor wash and tail-rotor paths clear of people and obstacles while giving the pilot the best visibility to line up the landing. The UH-60 Black Hawk is entered from a 90-degree approach because a perpendicular path aligns well with the HLZ, allowing the downwash to move along the length of the landing area and giving the pilot a clear, stable line to the touchdown point. The UH-1H Huey and CH-47 Chinook use a 45-degree approach. This side angle helps keep the rotor wash from blowing directly into hazards at the edges of the LZ and provides good clearance for the tail-rotor or rear-rotor areas, which is especially important with the Chinook’s twin-rotor design and the Huey’s single main rotor with a tail rotor. Other angles can place rotor wash or rotors in hazardous positions relative to obstacles or personnel, so they’re not preferred.

Approach direction is chosen to keep rotor wash and tail-rotor paths clear of people and obstacles while giving the pilot the best visibility to line up the landing. The UH-60 Black Hawk is entered from a 90-degree approach because a perpendicular path aligns well with the HLZ, allowing the downwash to move along the length of the landing area and giving the pilot a clear, stable line to the touchdown point.

The UH-1H Huey and CH-47 Chinook use a 45-degree approach. This side angle helps keep the rotor wash from blowing directly into hazards at the edges of the LZ and provides good clearance for the tail-rotor or rear-rotor areas, which is especially important with the Chinook’s twin-rotor design and the Huey’s single main rotor with a tail rotor. Other angles can place rotor wash or rotors in hazardous positions relative to obstacles or personnel, so they’re not preferred.