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ASN Wikibase Occurrence # 76018
Last updated: 3 February 2020
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Type:Silhouette image of generic C177 model; specific model in this crash may look slightly different
Cessna 177B Cardinal
Owner/operator:Rocky Wings Inc
Registration: N925KM
C/n / msn: 17702316
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:Into Nantucket Sound just off South Cape Beach near Mashpee, MA -   United States of America
Phase: En route
Departure airport:Falmouth, MA (5B6)
Destination airport:Falmouth, MA (5B6)
Investigating agency: NTSB
The flight had been flown at a reduced power setting and about 2 hours and 5 minutes into it, the pilot moved the propeller control to the low pitch position and applied the carburetor heat. The engine lost power and in response, the pilot removed the carburetor heat and then attempted to restore engine power by reapplying carburetor heat and switching the fuel selector to another tank. The engine only responded for a few seconds and lost power again. He maneuvered the airplane for a forced landing and ditched near a shoreline. A postaccident examination of the engine and engine accessories by a Federal Aviation Administration inspector revealed no evidence of mechanical failures or malfunctions that could have contributed to the loss of engine power. Based on the temperature and dew point about the time of the accident, the conditions were favorable for serious icing at glide power.
Probable Cause: The pilotís delayed use of carburetor heat while flying at reduced power settings in conditions that were favorable for carburetor icing resulting in the partial loss of engine power.



Revision history:

02-Aug-2010 18:26 RobertMB Added
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
26-Nov-2017 18:07 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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