ASN Wikibase Occurrence # 39493
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| Date: | Thursday 31 March 1983 |
| Time: | 15:00 |
| Type: | Pterodactyl Ascender II |
| Owner/operator: | private |
| Registration: | unreg. |
| MSN: | 1239 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Lehighton, PA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Lehighton, PA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
SEVERAL WITNESSES OBSERVED THE ULTRALIGHT VEHICLE TAKEOFF & CLIMB IN A CIRCULAR PATTERN TO AN ALT OF ABOUT 1500 FT. ONE WITNESS STATED THAT JUST PRIOR TO THE ACCIDENT SEQUENCE, THE ULTRALIGHT WAS TURNING WITH A STEEP ANGLE OF BANK. AT ABOUT THAT TIME, THE WITNESSES HEARD A REDUCTION IN POWER. TWO WITNESSES HEARD A POP/PUFF SOUND. A 3RD WITNESS STATED THE ULTRALIGHT FLIPPED OVER TWICE. ALL 3 WITNESSES REPORTED THAT THE WINGS FOLDED OR COLLAPSED & THE ULTRALIGHT FELL OR DOVE TO THE GROUND. AN EXAM OF THE WRECKAGE REVEALED THAT THE LEADING EDGE & REAR TUBULAR SPARS HAD FAILED IN A DOWNWARD DIRECTION (RELATIVE TO THE AIRFRAME). ALSO, THE KEEL WAS BROKEN, FORWARD OF THE REAR SPARS & THE KING POST WAS BENT DOWNWARD AT ABOUT THE MIDPOINT. NONE OF THE CABLES FAILED. DURING THE ACCIDENT SEQUENCE, THE RIGHT WINGLET SEPARATED & FELL ABOUT 100 FT FROM THE MAIN WRECKAGE. CAUSE:
Sources:
NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001214X42551_
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
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