ASN Wikibase Occurrence # 69938
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| Date: | Sunday 9 August 1992 |
| Time: | 18:05 LT |
| Type: |  Grob G103 Twin Astir |
| Owner/operator: | Soar Truckee, Inc. |
| Registration: | N103FB |
| MSN: | 33930 |
| Year of manufacture: | 1984 |
| Total airframe hrs: | 2000 hours |
| Engine model: | ALLISON%20250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Truckee, CA -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLT WAS RTRNG FM A VFR GLIDER SENIC FLT. THE PLT EXTDD THE SPOILERS TO LOSE ALT WHILE ON BASE LEG FOR RNY 19. WHEN THE GLIDER REACHED THE DESIRED ALT, THE PLT ATMTD TO RETRACT THE SPOILER CTL HANDLE, BUT IT WAS JAMMED IN THE EXTDD PSN. THE PLT & PSGR MADE SVRL ATMTS TO RETRACT THE SPOILER CTL HANDLE, BUT WITHOUT SUCCESS. DRG THIS TIME, THE PLT FLEW TWD THE APCH END OF THE RWY, BUT WITH THE SPOILERS EXTDD, HE WAS UNABLE TO REACH THE RWY. THE GLIDER COLLIDED WITH A DIRT EMBANKMENT SHORT OF RWY 19. A WRECKAGE EXAM DISCLOSED THAT THE FIBERGLASS SPOILER EXTENSION BLOCK WAS EXCESSIVELY WORN & ALLOWED THE SPOILER TO EXTD BYD ITS NORMAL VALUE. THIS CONDITION ALLOWED THE SPOILER TO JAM ON THE FENCE CAP RECESS ON THE UPPER SURFACE OF THE WING. NEITHER THE FLT NOR MAINT MANUAL ADDRESSED INSPN OF THE SPOILER ATTACHMENT OR EXTENSION LIMITING BLOCK. THE GLIDER RCVD AN ANNUAL INSPN 4 DAYS BFR THE ACDNT. THE INSPN WAS PERFORMED IAW THE MANUFACTURERS DIRECTIVES.
Probable Cause: THE INADEQUATE AIRCRAFT MAINTENANCE AND FLIGHT MANUALS AND UNAVAILABLE INFORMATION PERTAINING TO THE INSPECTION OF THE SPOILER SYSTEM. CONTRIBUTING TO THIS ACCIDENT WAS THE WORN AND JAMMED SPOILER ATTACHMENT LIMITING BLOCK.
Accident investigation:
 |
|
Sources:
NTSB LAX92LA343
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Nov-2009 11:18 | DColclasure | Added |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 18:48 | ASN Update Bot | Updated [Time, Cn, Operator, Other fatalities, Phase, Destination airport, Source, Narrative, Accident report] |
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