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ASN Wikibase Occurrence # 38520
Last updated: 4 December 2019
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Date:18-JAN-1994
Time:12:45
Type:Silhouette image of generic C140 model; specific model in this crash may look slightly different
Cessna 140
Owner/operator:private
Registration: N77190
C/n / msn: 11652
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Lopez, WA -   United States of America
Phase: En route
Nature:Private
Departure airport:Sequim, WA (2WA1)
Destination airport:Anacortes, WA (74S)
Investigating agency: NTSB
Narrative:
AFTER CHANGING THE AIRCRAFT'S OIL AND CHECKING THE OIL SCREEN, THE PILOT REINSTALLED THE OIL SCREEN AND OIL TEMPERATURE SENSING BULB. DUE TO BEING DISTRACTED BY HIS INCORRECT SAFETY WIRING OF THE OIL SCREEN NUT, THE PILOT FAILED TO FULLY TIGHTEN THE OIL TEMPERATURE SENSING BULB NUT. ON THE FIRST FLIGHT AFTER THE OIL CHANGE, AN ENGINE FAILURE OCCURRED WHEN THE OIL TEMPERATURE SENSING BULB NUT BACKED OUT OF ITS ATTACH POINT, AND ALL OF THE ENGINE OIL WAS LOST FROM THE ENGINE. AFTER THE ENGINE FAILURE, THE AIRCRAFT WAS DITCHED IN THE WATERS OFF LOPEZ ISLAND. CAUSE: THE PILOT/OWNER'S IMPROPER INSTALLATION OF THE OIL TEMPERATURE SENSING BULB, THE TOTAL LOSS OF ALL ENGINE OIL, AND THE SHEARING OF A CONNECTING ROD CAP.

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001206X00679


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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