ASN Wikibase Occurrence # 187562
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| Date: | Monday 23 May 2016 |
| Time: | 11:37 |
| Type: |  Beechcraft C23 Sundowner |
| Owner/operator: | Private |
| Registration: | N6697Y |
| MSN: | M-2224 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 648 hours |
| Engine model: | Lycoming O&VO-360 SER |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Sea off Makaha Beach, Honolulu, Oahu, HI -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Lihue, HI |
| Kapolei-Kalaeloa Airport, HI (JRF/PHJR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot reported that, during the climb-to-cruise portion of the cross-country interisland flight over open ocean water, the engine began to run roughly. The pilot applied carburetor heat, which resolved the engine roughness. The pilot decided to continue his flight. As the flight approached his destination, the engine began running roughly again, accompanied by a significant loss of engine rpm. The pilot applied carburetor heat and adjusted the mixture, but the engine power was not restored. He then ditched the airplane into the water just offshore of the island.
The airplane wreckage was recovered from the water 3 days after the accident, and it had sustained significant damage from tidal forces. Postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.
Weather conditions in the area at the time of the accident were conducive to the formation of carburetor icing at glide and cruise power and serious carburetor icing at glide power. If the pilot had either kept the carburetor heat on or applied it earlier, the loss of engine power and subsequent ditching could have been avoided.
Probable Cause: The total loss of engine power during cruise flight due to carburetor icing. Contributing to the accident was the pilot’s delay in applying carburetor heat during flight while operating in an area conducive to carburetor icing.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N6697Y
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-May-2016 00:27 | Geno | Added |
| 24-May-2016 15:18 | Aerossurance | Updated [Nature, Source, Narrative] |
| 24-May-2016 16:58 | harro | Updated [Aircraft type] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 19-Aug-2017 15:07 | ASN Update Bot | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 15-Jun-2023 20:54 | Ron Averes | Updated [[Other fatalities, Departure airport, Destination airport, Source, Narrative]] |
Corrections or additions? ... Edit this accident description
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