ASN Wikibase Occurrence # 131930
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| Date: | Sunday 4 July 1993 |
| Time: | 16:10 LT |
| Type: | US-LTA 138S |
| Owner/operator: | Us/lta Corporation |
| Registration: | N832US |
| MSN: | 002 |
| Total airframe hrs: | 300 hours |
| Engine model: | Lycoming IO-540-K2A5 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | New York, NY -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Bedford, MA (KBED) |
| Linden, NJ (KLDJ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT WHILE CRUISING AT 800 FT HE EXPERIENCED SEVERE BUFFETING WITH A SUBSEQUENT LOSS OF DIRECTIONAL CONTROL. HE WAS LOSING ALTITUDE SO HE INCREASED ENGINE POWER TO REDUCE HIS SINK RATE. THE PASSENGER REPORTED TO THE PILOT THAT THE NIGHT SIGN SEEMED TO BE COMING LOOSE. THE AIRSHIP CAME TO REST DRAPED OVER A SEVEN STORY BUILDING. A WITNESS REPORTED SEEING THE AIRSHIP HEADING SOUTH. HE REPORTED THAT IT SEEMED NORMAL; HOWEVER, SHORTLY THEREAFTER HE NOTICED A HOLE ON THE UNDERSIDE WHICH KEPT GETTING LARGER. PRIOR TO THE TEAR THE WITNESS REPORTED SEEING A SMALL DARK MASS WITH A WHITE FLEXIBLE MATERIAL FALL FROM THE AIRSHIP. EXAMINATION OF THE AIRSHIP REVEALED THAT A SECTION OF THE RIGHT BANNER, WHICH WAS SECURED TO THE ENVELOPE BY VELCRO TAPE, AND A PROJECTOR, WHICH WAS LACED TO A LACING STRIP GLUED TO THE ENVELOPE, HAD SEPARATED TEARING THE ENVELOPE. THE ENVELOPE DID NOT CONTAIN SEAMS TO PREVENT TEARS NOR WAS THE FABRIC TEAR RESISTANT. HOWEVER THE FABRIC MET OR EXCEEDED DESIGN AND FAA REGULATORY STRENGTH LIMITS.
Probable Cause: INADEQUATE DESIGN OF, AND DESIGN STANDARDS FOR, THE AIRSHIP WHICH RESULTED IN AN ENVELOPE FAILURE FOLLOWING SEPARATION OF A PORTION OF THE NIGHT SIGN EQUIPMENT.
Accident investigation:
 |
|
Sources:
NTSB BFO93FA107
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Aug-2011 13:13 | harro | Updated [Aircraft type, Operator, Narrative, Plane category, ] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 12:49 | ASN Update Bot | Updated [Time, Cn, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Plane category, Category, Accident report] |
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