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ASN Wikibase Occurrence # 44139
Last updated: 28 January 2021
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Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna 172L
Owner/operator:Congressional Flying Club
Registration: N7604G
C/n / msn: 17259304
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Written off (damaged beyond repair)
Location:Montgomery Twp, PA -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Frederick, MD (FDK)
Destination airport:Unknown,
Investigating agency: NTSB
The airplane descended into an area between two converging mountain ridges known locally as "The Punchbowl," and impacted rising terrain in an almost-level attitude. Weather was clear at the time. There were no mechanical anomalies noted with either the airplane or the engine. The pilot had two previous, possible suicide attempts; however, the circumstances surrounding them were not present at the time of the accident. Family members also stated that the pilot was not depressed, and that he was actively involved in a new hobby. The pilot also had emphysema, with hypoxia at rest. The hypoxia would reasonably be expected to worsen at altitude. The pilot may have had problems with the control of impulsive behaviors, which could have been aggravated by a decreased blood-oxygen supply. The pilot had coronary artery disease; however, its extent would not necessarily have caused any symptoms. The possibility of sudden stroke, seizure, heart attack, or other incapacitating event could not be eliminated by the autopsy, and hypoxia could have increased the likelihood of their occurrence. Although undetermined what, if any, role the pilot's medical conditions played in the accident; it was possible that his psychiatric condition and/or his emphysema were factors.
Probable Cause: An impact with mountainous terrain for an undetermined reason.



Revision history:

28-Oct-2008 00:45 ASN archive Added
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
05-Dec-2017 09:06 ASN Update Bot Updated [Other fatalities, Destination airport, Source, Narrative]

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