ASN Wikibase Occurrence # 277142
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Date: | Sunday 27 March 2022 |
Time: | 12:30 LT |
Type: | Cessna 172F Skyhawk |
Owner/operator: | Private |
Registration: | N8431U |
MSN: | 17252331 |
Year of manufacture: | 1964 |
Engine model: | Continental O-300 |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Upper Cumberland Regional Airport (KSRB), Sparta, TN -
United States of America
|
Phase: | Landing |
Nature: | Training |
Departure airport: | Sparta-White County Airport, TN (KSRB) |
Destination airport: | Sparta-White County Airport, TN (KSRB) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:During a touch-and-go landing, the student pilot and flight instructor heard a pop sound as they touched down. The student pilot initiated a go-around and then informed the instructor that the left main landing gear (LMLG) had separated from the airplane. They flew for about 2.5 hours to reduce the airplane's fuel load before attempting to land with the fractured LMLG. The landing was uneventful and the airplane came to a stop on the runway. According to the instructor the LMLG struck the horizontal stabilizer when it separated, resulting in substantial damage.
Examination of the left main landing gear spring strut revealed that the step bracket was tack welded onto the spring strut. According to the airplane manufacturer, step brackets can only be affixed to the spring strut using an approved epoxy adhesive; welding on the spring strut is not permitted. This improper maintenance resulted in a fatigue crack and the failure of the gear during the accident flight due to overstress.
Probable Cause: Maintenance personnel's failure to properly affix left main landing gear components, which led to the failure of the left main landing gear during the accident flight.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | ERA22LA171 |
Status: | Investigation completed |
Duration: | 1 year and 7 months |
Download report: | Final report |
|
Sources:
NTSB ERA22LA171
https://flightaware.com/live/flight/N8431U Location
Revision history:
Date/time | Contributor | Updates |
05-Apr-2022 23:21 |
Captain Adam |
Added |
16-Nov-2023 15:46 |
ASN Update Bot |
Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
16-Nov-2023 15:47 |
harro |
Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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