ASN Wikibase Occurrence # 38742
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| Date: | Friday 24 September 1993 |
| Time: | 17:10 LT |
| Type: |  Beechcraft C35 Bonanza |
| Owner/operator: | Heifner, William E. |
| Registration: | N5936C |
| MSN: | D-3297 |
| Year of manufacture: | 1952 |
| Engine model: | CONTINENTAL E-185-11 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Ocklawaha, FL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | (36X) |
| (36X) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
PURPOSE OF THE FLIGHT WAS TO TEST THE AIRPLANE'S RADIOS. THE PILOT'S WIFE WAS AT THE AIRPARK WITH A PORTABLE VHF RADIO. ACCORDING TO HER, THE AIRPLANE ORBITED THE AIRPARK ABOUT 5 TIMES, THEN FLEW TOWARD AN AREA THE PILOT HAD PREVIOUSLY IDENTIFIED TO HER AS A POSSIBLE FORCED LANDING AREA. SHE SAID THE PILOT CONTACTED HER & ADVISED OF A 'PROBLEM WITH THE PROPELLER.' FOUR WITNESSES SAW THE AIRPLANE MANEUVERING AT LOW ALTITUDE. THEY INDICATED THE PLANE PULLED UP FROM NEAR TREETOP LEVEL, THEN IT ENTERED A DESCENT, HIT TREES, CRASHED & BURNED. ONE WITNESS SAID THE ENGINE SOUNDED LIKE IT WAS RUNNING ROUGH; ANOTHER STATED THE ENGINE POWER STOPPED BEFORE THE AIRPLANE PITCHED NOSE DOWN. NO PREIMPACT FAILURE OF THE ENGINE WAS FOUND. AN EXAM REVEALED THAT 1 OF 2 PROPELLER BLADES HAD SEPARATED DURING THE SEQUENCE. A BRONZE BLADE BUSHING FOR THE SEPARATED BLADE WAS NOT LOCATED. TESTS FOR ETHANOL REVEALED 0.03 GM% IN THE PILOT'S BLOOD, 0.05 GM% IN VITREOUS FLUID, AND 0.05 GM% IN HIS URINE. ALSO, 32 MG/DL OF ACETALDEHYDE WAS DETECTED IN THE PILOT'S BLOOD.
Probable Cause: FAILURE OF A PROPELLER BLADE FOR AN UNDETERMINED REASON, AND FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL. FACTORS RELATED TO THE ACCIDENT WERE: LOW PASS PERFORMED BY THE PILOT, AND HIS POSSIBLE IMPAIRMENT FROM CONSUMPTION OF ALCOHOL.
Accident investigation:
 |
|
Sources:
NTSB MIA93FA200
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 11:04 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Source, Narrative, Accident report] |
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