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ASN Wikibase Occurrence # 179306
Last updated: 4 June 2020
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Date:05-SEP-2015
Time:23:36
Type:Silhouette image of generic C82R model; specific model in this crash may look slightly different
Cessna TR182 Turbo Skylane
Owner/operator:Private
Registration: N4707S
C/n / msn: R18201393
Fatalities:Fatalities: 1 / Occupants: 4
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Midland International Airport (KMAF), Midland, TX -   United States of America
Phase: Take off
Nature:Private
Departure airport:Midland, TX (MAF)
Destination airport:EL PASO, TX (ELP)
Investigating agency: NTSB
Narrative:
The commercial pilot took off from the airport in the airplane with three passengers on board. The pilot reported that, during the takeoff and while crossing the departure end of the runway, the engine began to lose power. The pilot managed to climb and level off the airplane about 40 ft above ground level. The airplane would not maintain altitude, so he conducted a wheels-up landing in a field. The passengers reported that, during the forced landing, the airplane struck a rock and stopped suddenly. The pilot sustained serious injuries and died 24 days after the accident.
Postaccident examination confirmed flight control continuity. An examination of the turbocharger revealed that the wastegate actuating cable was frayed and kinked at both ends. When the throttle was advanced, the cable bound. The bypass valve’s actuator arm was corroded, and the bolt and nut used to fasten the actuator cable to the arm were seized and corroded. An examination of the single-driven dual magneto revealed that both sides had improper ignition timing. A subsequent examination revealed that the points were worn. During a bench test, the magneto operated normally. Because the engine was test run successfully with the wastegate cable, bypass valve actuator, and magneto in place, it is unlikely that they directly caused the partial loss of engine power. However, the role they might have played in the power loss could not be determined.


Probable Cause: The partial loss of engine power for reasons that could not be determined based on the available evidence.



Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20150909X52721&key=1
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=4707S


Revision history:

Date/timeContributorUpdates
06-Sep-2015 02:10 Geno Added
06-Sep-2015 02:11 Geno Updated [Aircraft type, Narrative]
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
12-Dec-2017 20:00 ASN Update Bot Updated [Operator, Total fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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