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ASN Wikibase Occurrence # 131531
Last updated: 25 April 2019
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Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna 172N Skyhawk
Owner/operator:Aviation Professionals Inc.
Registration: N172NT
C/n / msn: 17271113
Fatalities:Fatalities: 0 / Occupants: 4
Aircraft damage: Substantial
Location:Burbank, IL -   United States of America
Phase: En route
Departure airport:Lansing, IL (IGQ)
Destination airport:Chicago, IL (MDW)
Investigating agency: NTSB
The pilot reported that about 5 miles from the destination the engine started to run rough, and about 20 seconds later the engine lost power. His attempts to restore engine power were unsuccessful. The pilot subsequently performed a forced landing to a field. During the landing roll the airplane nosed over on the soft field. A postaccident examination revealed that the No.3 cylinder exhaust valve push rod had buckled and fractured near mid-length. The push rod fracture surfaces showed failure signatures consistent with overload precipitated by a stuck valve. No other engine anomalies were observed.
Probable Cause: A loss of engine power due to a fractured push rod precipitated by a stuck exhaust valve.



Revision history:

18-Jun-2011 23:34 gerard57 Added
19-Jun-2011 04:42 RobertMB Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Source, Damage]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 16:57 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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