ASN Wikibase Occurrence # 358681
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| Date: | Tuesday 11 July 1995 |
| Time: | 16:30 LT |
| Type: |  Pitts S-2B |
| Owner/operator: | Lynn Aviation Inc. |
| Registration: | N260BF |
| MSN: | 5222 |
| Total airframe hrs: | 830 hours |
| Engine model: | LYCOMING AEIO-540-D4A5 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Queenstown, MD -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Stevensville, MD (W29 |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was conducting aerobatic maneuvers. The pilot stated, that during a maneuver, '...As I pulled out of the maneuver (a 4 to 5 G pull) I heard a very loud 'shot gun' type noise and simultaneously experienced a hard jolt and a release of pressure on the stick as the plane's nose pitched downward....The throttle lever jammed at approximately the half closed position. The plane was descending; in order to stabilize the airspeed for a forced landing, I had to hold full back stick pressure.' Examination of the aircraft revealed the upper left and right longeron tubes from the fuselage were fractured. The fracture of the longerons restricted movement of the cables for the throttle and mixture control. Metallurgical examination of the longeron fractures revealed evidence of fatigue cracking.
Probable Cause: failure of the fuselage longeron tubes due to fatigue, which resulted in partial separation (distortion) of the fuselage, partial loss of aircraft control, and a partial loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB NYC95LA157
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 17:01 | ASN Update Bot | Added |
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