Accident Mooney M20A N8146E,
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ASN Wikibase Occurrence # 40558
 
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Date:Saturday 29 January 1983
Time:12:58
Type:Silhouette image of generic M20P model; specific model in this crash may look slightly different    
Mooney M20A
Owner/operator:William Laine Hobbie Ii
Registration: N8146E
MSN: 1417
Year of manufacture:1959
Total airframe hrs:2352 hours
Engine model:LYCOMING O-360-A1A
Fatalities:Fatalities: 4 / Occupants: 4
Aircraft damage: Destroyed
Category:Accident
Location:Prattville, AL -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Private
Departure airport:Auburn, AL
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
THE LEFT WING SEPARATED AS THE PLT BEGAN A PULL-UP AFTER A LOW PASS. THE SEPARATION POINT WAS IN THE WING ROOT WHERE THEMAIN SPAR HAD BEEN SECURED TO THE FUSELAGE WITH A METAL BRACKET. A BUTT SPLICE HAD BEEN MADE TO THE BOTTOM OF THE WING SPAR. THE FRACTURE AREA AT THE ROOT END OF THE MAIN WING SPAR WAS SOFT, DAMP & DISCOLORED COMPARED TO OTHER WOOD IN THE AREA. THE BUTT JOINT WAS LATER DETERMINED AS HAVING NO CAPABILITY FOR TRANSFERRING AXIAL STRESSES. THIS REPAIR WAS NOT DONE UNDER SUPERVISION OF A LICENSED MECHANIC. THE ACFT HAD OPERATED 40 HRS SINCE THE ANNUAL INSPECTION DATED 6/8/82. AD76-15-1 (INSPECTION OF THE WOOD WING) REQUIRES THAT THE WOOD WING BE INSPECTED IAW MOONEY SB M20-170A. CAUSE:

Sources:

NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001214X41922

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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