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ASN Wikibase Occurrence # 180002
Last updated: 26 November 2020
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Date:09-JUL-2004
Time:11:30
Type:Silhouette image of generic C340 model; specific model in this crash may look slightly different
Cessna 340A
Owner/operator:Private
Registration: N60PP
C/n / msn: 340A-0073
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Mason City Municipal (MCW), Mason City, Iowa -   United States of America
Phase: Approach
Nature:Executive
Departure airport:Goshen, IN (GSH)
Destination airport:Mason City, IN (MCW)
Investigating agency: NTSB
Narrative:
The airplane touched down short of the landing runway following a loss of right engine oil pressure during cruise flight at 16,000 feet. The pilot stated that with the loss of oil pressure, he could "easily" make it to the destination. While on final approach and in reported visual conditions, the pilot cancelled his instrument rules flight plan and executed a visual approach. On short final, the oil pressure dropped to zero. He then shutdown the right engine and was not able to get the right engine propeller feathered. He touched down about 7 feet short of the runway. Examination of the airplane revealed that the vacuum line and wing boot deice lines were full of oil. The right engine turbocharger was "seized-up." Examination of the turbocharger bearings and shaft did not show evidence of overheating. The turbocharger bearings and shaft displayed evidence of circumferential wear consistent with normal operation. The right engine driven vacuum pump was "full" of oil and contained an internal oil separator.
Probable Cause: The proper touchdown point not obtain/maintained by the pilot following a single-engine approach to landing. Contributing factors were the vacuum pump oil leak, the low oil pressure of the propeller control system, and the unfeathered propeller.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20050317X00324&key=1


Revision history:

Date/timeContributorUpdates
29-Sep-2015 13:40 Noro Added
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
07-Dec-2017 18:14 ASN Update Bot Updated [Cn, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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