ASN Wikibase Occurrence # 361412
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| Date: | Friday 27 August 1993 |
| Time: | 18:15 LT |
| Type: |  Beechcraft V35A Bonanza |
| Owner/operator: | Bell Chemical Co. Inc,. |
| Registration: | N7733R |
| MSN: | D8874 |
| Total airframe hrs: | 3600 hours |
| Engine model: | CONTINENTAL IO-520-B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Knoxville, TN -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Training |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING CLIMB OUT, THE AIRPLANE EXPERIENCED A REDUCTION IN ENGINE POWER FOLLOWED BY A COMPLETE LOSS OF POWER. THE FLIGHT INSTRUCTOR ASSUMED CONTROL OF THE AIRPLANE AND MADE A FORCED LANDING INTO A WOODED AREA; THE AIRPLANE COLLIDED WITH TREES AND FLIPPED INVERTED. EXAMINATION OF THE AIRCRAFT FUEL SYSTEM REVEALED CORROSIVE MATERIALS IN THE FUEL FLOSCAN TRANSDUCER; CORROSIVE MATERIALS BLOCKED BOTH THE IN AND OUT PORTS. THE TRANSDUCER IS PART OF A SUPPLEMENTAL TYPE CERTIFICATE MODIFICATION THAT MEASURES FUEL FLOW. THE ASSEMBLY IS MOUNTED ON TOP OF THE ENGINE, AND IS THE FINAL COMPONENT IN THE FUEL SYSTEM BEFORE THE FUEL FLOW DIVIDER. ACCORDING TO THE OPERATOR, THE AIRCRAFT HAD NOT BEEN FLOWN IN SEVERAL YEARS. A CURRENT ANNUAL INSPECTION HAD BEEN COMPLETED. HOWEVER, THERE IS NO INSPECTION PROCEDURE FOR THE TRANSDUCER ASSEMBLY.
Probable Cause: INADEQUATE ANNUAL INSPECTION PROCEDURES FOR THE FUEL SYSTEM, WHICH RESULTED IN FUEL STARVATION DUE TO BLOCKAGE OF THE FUEL FLOSCAN TRANSDUCER. A FACTOR WAS INSUFFICIENT FAA INSPECTION STANDARDS/REQUIREMENTS.
Accident investigation:
 |
|
Sources:
NTSB ATL93LA148
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 18:10 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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