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ASN Wikibase Occurrence # 187562
Last updated: 15 January 2020
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Date:23-MAY-2016
Time:11:37
Type:Silhouette image of generic BE23 model; specific model in this crash may look slightly different
Beechcraft C23 Sundowner
Owner/operator:Private
Registration: N6697Y
C/n / msn: M-2224
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Pacific Ocean off Makaha Beach, Honolulu, Oahu, HI -   United States of America
Phase: Landing
Nature:Private
Departure airport:Lihue, HI
Destination airport:Kapolei, HI (JRF)
Investigating agency: NTSB
Narrative:
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 pilotís delay in applying carburetor heat during flight while operating in an area conducive to carburetor icing.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20160531X61809&key=1
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N6697Y


Revision history:

Date/timeContributorUpdates
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]

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