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ASN Wikibase Occurrence # 199720
Last updated: 22 December 2019
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Date:14-SEP-2017
Time:11:30
Type:Silhouette image of generic BE23 model; specific model in this crash may look slightly different
Beechcraft C23
Owner/operator:Maine Instrument Flight
Registration: N2120W
C/n / msn: M-1492
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Machias Airport (MVM), ME -   United States of America
Phase: Landing
Nature:Training
Departure airport:Augusta State Airport, ME (AUG/KAUG)
Destination airport:Machias-Valley Airport, ME (KMVM)
Investigating agency: NTSB
Narrative:
The private pilot descended the airplane to the destination airport but did not apply carburetor heat. While in the traffic pattern, as the airplane was turning onto a left base leg for the runway, the engine began to run roughly. The pilot then applied carburetor heat, but the engine lost total power. After realizing that the airplane was not going to glide to the runway threshold, the pilot performed a forced landing in a grassy area just short of the runway. During the landing, the nose gear collapsed and the airplane spun 180° before it came to rest, which resulted in substantial damage to the right wing.
Examination of the wreckage did not reveal any evidence of preimpact mechanical malfunctions or failures of the ignition system, fuel system, or engine that would have precluded normal operation. The weather conditions at the time of the accident were conducive to the formation of serious carburetor icing at glide power. Although the Descent checklist in the pilot operating handbook for the airplane make and model instructed the pilot to use carburetor heat as required, the pilot did not apply carburetor heat before initiating the descent; rather, he waited until the engine began to run roughly. It is likely that the engine initially lost partial power after developing carburetor ice and that the pilot’s delayed application of carburetor heat was ineffective at melting any accumulated ice.

Probable Cause: The pilot's delay in applying carburetor heat, which resulted in a total loss of engine power due to carburetor icing.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20170914X21935&key=1
https://fr.flightaware.com/resources/registration/N2120W

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 7 months
Download report: Final report


Revision history:

Date/timeContributorUpdates
16-Sep-2017 11:25 Iceman 29 Added
16-Sep-2017 12:17 harro Updated [Aircraft type, Embed code]
15-Apr-2019 14:42 ASN Update Bot Updated [Time, Nature, Departure airport, Destination airport, Source, Embed code, Damage, Narrative, Accident report, ]
15-Apr-2019 15:58 harro Updated [Location, Departure airport, Destination airport, Source, Embed code, Narrative]

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