Accident Glasair II RG N306AT,
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ASN Wikibase Occurrence # 365105
 
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Date:Tuesday 18 June 1991
Time:13:40 LT
Type:Silhouette image of generic GLAS model; specific model in this crash may look slightly different    
Glasair II RG
Owner/operator:Private
Registration: N306AT
MSN: 306
Engine model:LYCOMING IO-360-A1B
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Visalia, CA -   United States of America
Phase: En route
Nature:Private
Departure airport:Fallbrook, CA (L18)
Destination airport:Lake Tahoe, CA (KTVL)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
THE CERTIFICATED PRIVATE PILOT/OWNER STATED THAT AN HOUR AND HALF INTO THE FLIGHT THE ENGINE STARTED TO RUN ROUGH AND LOST RPM. ALL INSTRUMENTS WERE IN THE GREEN. HE HEADED THE AIRCRAFT FOR A SUITABLE AIRPORT BUT THE ENGINE QUIT IN THE PATTERN. DUE TO WINDS HE WAS UNABLE TO MAKE THE RUNWAY. EXAMINATION OF THE ENGINE BY FAA INSPECTORS REVEALED THAT THE NUMBER 4 CYLINDER EXHAUST VALVE FAILED.

Probable Cause: TOTAL LOSS OF ENGINE POWER DUE TO THE FAILURE OF THE NUMBER 4 ENGINE EXHAUST VALVE.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: LAX91LA265
Status: Investigation completed
Duration: 1 year and 10 months
Download report: Final report

Sources:

NTSB LAX91LA265

Location

Revision history:

Date/timeContributorUpdates
20-Mar-2024 06:38 ASN Update Bot Added

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