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ASN Wikibase Occurrence # 145638
Last updated: 20 June 2018
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Date:14-MAY-2012
Time:13:30
Type:Silhouette image of generic PA24 model; specific model in this crash may look slightly different
Piper PA-24-250 Comanche
Owner/operator:Private
Registration: N7171P
C/n / msn: 24-2339
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Category:Accident
Location:Near Shawnee Regional Airport - KSNL, Shawnee, OK -   United States of America
Phase: Approach
Nature:Ferry/positioning
Departure airport:Oklahoma City, OK (KHSD)
Destination airport:Shawnee, OK (KSNL)
Investigating agency: NTSB
Narrative:
The pilot was conducting the second leg of the airplane’s first flight after a recent engine overhaul. On final approach, the pilot lowered the landing gear handle; however, he did not receive confirmation that the landing gear was down. The pilot stated that he applied a lot of force to conduct the manual gear override but that he was not able to get the handle up. Shortly thereafter, the engine lost power. The airplane was substantially damaged during the subsequent forced landing. A postaccident examination of the airplane revealed that the mixture cable was bent, the cable was pulled from its last clamp prior to the carburetor mixture control, and the mixture control was pulled into the cutoff position. The routing of the mixture cable did not match assembly drawings, and several clamps used to route the mixture cable were missing. A grease fitting on the over-center link for the nose landing gear was in line with the bend in the mixture cable. Most likely, the landing gear center link became entangled in the mixture control cable, which prevented the nose landing gear from extending. The mixture likely came to idle when the pilot used extra force to try to extend the landing gear. The mixture cable was not installed properly during the recent engine overhaul.
Probable Cause: The improper installation of the mixture cable by maintenance personnel, which allowed the mixture cable to entangle with the landing gear during gear extension and led to the subsequent loss of engine power.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20120514X33812&key=1


Revision history:

Date/timeContributorUpdates
15-May-2012 09:19 Geno Added
16-May-2012 17:13 Geno Updated [Time, Departure airport, Source]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 20:40 ASN Update Bot Updated [Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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