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 |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative: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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