ASN Wikibase Occurrence # 361066
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| Date: | Sunday 14 November 1993 |
| Time: | 03:50 LT |
| Type: |  Grumman American AA-1B |
| Owner/operator: | Private |
| Registration: | N9896L |
| MSN: | AA1B-6496 |
| Engine model: | LYCOMING O-235-C2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Arcadia, WI -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Eau Claire, WI (KEAU) |
| Lacrosse, WI (KLSE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT STATED THE AIRPLANE WAS IN CRUISE FLIGHT AT 2000 FEET WHEN THE ENGINE BEGAN TO RUN ROUGH AND LOSE POWER. THE PILOT PERFORMED EMERGENCY PROCEDURES (APPLIED CARBURETOR HEAT, CHANGED FUEL TANKS, AND TRIED LEFT AND THEN RIGHT MAGNETOS) TO NO AVAIL. THE ENGINE LOST POWER COMPLETELY JUST AS THE PILOT DECLARED AN EMERGENCY ON RADIO FREQUENCY 121.5 MHZ. THE PILOT PREPARED FOR A NIGHT FORCED LANDING WHEN THE AIRCRAFT IMPACTED AND BECAME ENTANGLED IN A GROUP OF 50 FOOT OAK TREES. ENGINE CONTINUITY, COMPRESSION, IGNITION, INDUCTION AND FUEL SYSTEMS WERE FIELD TESTED. NO DEFECTS WERE FOUND. THE SPARK PLUGS WERE ALL COVERED WITH BLACK SOOTY DEPOSITS. A CARBURETOR ICING PROBABILITY CHART OBTAINED FROM A DOT/FAA/CT-82/44 PUBLICATION PREDICTS SERIOUS ICING AT CRUISE POWER WITH THE WEATHER CONDITIONS EXISTING AT THE TIME OF THE ACCIDENT (TEMPERATURE 40 DEGREES FAHRENHEIT, DEW POINT OF 38 DEGREES FAHRENHEIT).
Probable Cause: the loss of engine power for an undetermined reason(s).
Accident investigation:
 |
|
Sources:
NTSB CHI94LA037
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 14:26 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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