Serious incident Mooney M-20E N1936Y,
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ASN Wikibase Occurrence # 372087
 
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Date:Monday 5 October 1987
Time:20:04 LT
Type:Silhouette image of generic M20P model; specific model in this crash may look slightly different    
Mooney M-20E
Owner/operator:Private
Registration: N1936Y
MSN: 243
Year of manufacture:1964
Total airframe hrs:3059 hours
Engine model:LYCOMING IO-360-A1A
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Minor
Category:Serious incident
Location:Columbia, SC -   United States of America
Phase: Take off
Nature:Private
Departure airport:
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
DURING TAKEOFF THE PROPELLER STUDS FAILED AND THE PROPELLER DEPARTED THE ACFT. FAA INCIDENT RPT STATED THAT PROPELLER HAD BEEN OVERHAULED AND REPLACED 32 HOURS PRIOR TO THE SEPARATION. METALLURGICAL EXAM OF THE PROPELLER STUDS REVEALED FATIGUE FAILURE OF THE STUDS THROUGH THE THREADED AREA WITH NO DAMAGE TO THE THREADS. FATIGUE FAILURE OF PROP STUDS OCCURRED AS A RESULT OF VIBRATION DUE TO INADEQUATE TORQUING OF THE MOUNTING NUTS.

Probable Cause:

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: ATL88IA074
Status: Investigation completed
Duration: 1 year and 9 months
Download report: Final report

Sources:

NTSB ATL88IA074

Location

Revision history:

Date/timeContributorUpdates
26-Mar-2024 13:22 ASN Update Bot Added

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