ASN Wikibase Occurrence # 36504
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| Date: | Tuesday 31 May 1994 |
| Time: | 08:45 LT |
| Type: |  Beechcraft A36 Bonanza |
| Owner/operator: | Tony Gale Dunivant |
| Registration: | N4323W |
| MSN: | E-526 |
| Total airframe hrs: | 3657 hours |
| Engine model: | CONTINENTAL IO-520-BA |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Fullerton, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | , CA (KFUL) |
| Laredo, TX (KLRD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ACCORDING TO WITNESSES, THE AIRPLANE USED MOST OF THE 3,120 FOOT LONG RUNWAY WITH SLOW ACCELERATION, AND FAILED TO ESTABLISH A POSITIVE RATE OF CLIMB. IT THEN COLLIDED WITH A STREET LIGHT POLE LESS THAN A MILE FROM THE RUNWAY. THE AIRPLANE HAD BEEN MODIFIED ABOUT 9.7 FLIGHT HOURS PRIOR TO THE ACCIDENT FLIGHT WITH AN FAA APPROVED TURBONORMALIZED/TURBO SYSTEM AND SPEED BRAKES. ACCORDING TO THE COMPANY CHECK PILOT, THE OWNER/PILOT HAD RECEIVED 1.5 HOURS OF GROUND INSTRUCTION AND 1.3 HOURS OF FLIGHT CHECKOUT ON THE MODIFICATION/CHANGES TO THE AIRPLANE. THE TURBO MODIFICATION WEIGHED 32 POUNDS MORE THAN REFLECTED IN THE STC PAPERWORK, AND THE CG WAS 3.61 INCHES FORWARD OF THE FORWARD LIMIT AS THE AIRCRAFT WAS LOADED. THE TIP TANK FUEL CG WAS IN ERROR BY 10.9 INCHES IN THE STC PAPERWORK. THE AIRPLANE WAS OVER GROSS WEIGHT BY 26 POUNDS. THE FUEL BOOST PUMP WAS FOUND IN THE ON POSITION, AND COULD HAVE FLOODED THE ENGINE. THE SPARK PLUGS INDICATE AN OVER-RICH MIXTURE, WHICH COULD DEGRADE ENGINE PERFORMANCE. FACTORS ASSOCIATED WITH THE INSTALLATION CAN CAUSE A DEGRADED TAKEOFF PERFORMANCE AT SEA LEVEL.
Probable Cause: the pilot's lack of familiarity with the performance change of the airplane, and the lack of proper training/transition in the modified airplane. Contributing to the accident was inadequate substantiation process and insufficient review by the FAA; the improper weight and balance of the airplane; and the pilot's lack of total experience in this type of aircraft.
Accident investigation:
 |
|
Sources:
NTSB LAX94FA232
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 07:09 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Accident report] |
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