ASN Wikibase Occurrence # 352328
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| Date: | Saturday 27 November 1999 |
| Time: | 17:15 LT |
| Type: |  Bell 47G |
| Owner/operator: | Private |
| Registration: | N940B |
| MSN: | 672 |
| Year of manufacture: | 1952 |
| Total airframe hrs: | 7510 hours |
| Engine model: | Franklin 6V-355-A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Coudersport, PA -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | |
| Glen Rock, PA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot with a passenger, landed the helicopter in a clearing that was about 40 feet wide, by 150 feet long, and surrounded by 'very tall trees.' The pilot said he made a normal run-up and lifted the helicopter to a hover. He used full throttle and maintained 3,100 RPM. When the helicopter started to accelerate forward, at about 12-15 knots, the RPM dropped to 3,000 and the pilot lowered collective to keep the RPM from dropping further. The helicopter's main rotor blades contacted a pine tree about 30 feet above the ground. The helicopter then rolled to the left and impacted the ground. The elevation at the accident site was about 1,800 feet Ms. The pilot did not report any mechanical malfunctions with the helicopter's airframe or engine. After the accident, the pilot stated that the helicopter was with-in it's maximum gross weight; however, the helicopter did not have enough power available to climb and he should have never landed in the clearing.
Probable Cause: The pilot's improper preflight planning and decision to attempt a takeoff with the passenger from the confined area.
Accident investigation:
 |
|
Sources:
NTSB NYC00LA044
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Mar-2024 10:48 | ASN Update Bot | Added |
| 07-Mar-2024 10:49 | ASN | Updated [Departure airport, Destination airport, Narrative] |
Corrections or additions? ... Edit this accident description
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