ASN Wikibase Occurrence # 359857
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| Date: | Friday 2 September 1994 |
| Time: | 12:00 LT |
| Type: |  Cessna 180B |
| Owner/operator: | Private |
| Registration: | N5143E |
| MSN: | 50443 |
| Year of manufacture: | 1959 |
| Engine model: | CONTINENTAL O-470K |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Fort Yukon, AK -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | |
| Fairbanks, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT AND A PASSENGER WERE DEPARTING A REMOTE LAKE IN A FLOAT EQUIPPED AIRPLANE AS THE RETURN PORTION OF A CROSS-COUNTRY PERSONAL FLIGHT AT THE CONCLUSION OF A HUNTING TRIP. DURING THE TAKEOFF, THE PILOT REPORTED USING 10 DEGREES OF FLAPS THAT HE LOWERED TO 20 DEGREES WHEN THE AIRPLANE WOULD NOT BREAK FREE FROM THE WATER SURFACE. THE WATER CONDITIONS WERE SMOOTH AND GLASSY. WHEN THE AIRPLANE DID NOT ACCELERATE PROPERLY, THE PILOT ABORTED THE TAKEOFF; HOWEVER, THE AIRPLANE'S FORWARD MOMENTUM CARRIED THE AIRCRAFT INTO THE LAKE SHORELINE. THE FRONT PORTION OF THE FLOATS CONTACTED THE TERRAIN AND THE AIRPLANE NOSED OVER. THE AIRCRAFT OWNER'S MANUAL RECOMMENDS USING 20 DEGREES OF FLAPS THROUGHOUT THE TAKEOFF. ADDITIONALLY, UNDER HEAVY LOADS AND GLASSY WATER CONDITIONS, AN ABRUPT APPLICATION OF BACK CONTROL PRESSURE MAY BE NECESSARY TO BREAK FREE OF THE WATER SURFACE.
Probable Cause: THE PILOT'S IMPROPER USE OF THE FLAPS AND FLIGHT CONTROLS, AND A DELAY IN ABORTING THE TAKEOFF. A FACTOR IN THE ACCIDENT WAS GLASSY WATER CONDITIONS.
Accident investigation:
 |
|
Sources:
NTSB ANC94LA131
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 15:21 | ASN Update Bot | Added |
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