ASN Wikibase Occurrence # 268874
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| Date: | Saturday 9 December 2000 |
| Time: | 11:00 LT |
| Type: |  Mooney M20J |
| Owner/operator: | |
| Registration: | N201MP |
| MSN: | 24-0072 |
| Year of manufacture: | 1977 |
| Engine model: | Lycoming IO-360 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | TRENTON, New Jersey -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | TRENTON , NJ (TTN) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
With a fight instructor, the pilot executed a normal takeoff from Runway 34 for right closed traffic. Because a UH-60 helicopter was executing an approach from the southwest to the threshold of Runway 34, the pilot extend the touchdown point by 1,000 feet. The helicopter transitioned to hovering flight near the threshold, about 30 seconds before the accident airplane. After a short delay, the UH-60 air-taxied to the ramp. When the accident airplane was about 20 feet above the ground, it suddenly rolled right, (faster than a full application of aileron could counteract,) and the right wing contacted the ground. Witness statements place the UH-60, 100 to 600 feet away from the accident airplane at the time of the accident. According to the Aeronautical Information Manual, every aircraft generates vortices, that can cause an uncommanded roll that exceeds the roll-control authority of the encountering airplane. Landing helicopters produce a pair of strong, high-speed trailing vortices similar to larger fixed wing aircraft. Pilots of small aircraft should use caution when operating behind landing helicopters.
Probable Cause: The flight instructor's improper decision to allow his student to land in close proximity to a hovering helicopter.
Accident investigation:
 |
|
Sources:
NTSB NYC01LA057
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2021 12:55 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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