ASN Wikibase Occurrence # 217603
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Date: | Saturday 9 September 2017 |
Time: | 15:00 |
Type: | Cessna 340 |
Owner/operator: | Holubar Properties Inc |
Registration: | N5870M |
MSN: | 3400058 |
Year of manufacture: | 1972 |
Total airframe hrs: | 5799 hours |
Engine model: | Continental TSIO 520SER |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | McKinney, TX -
United States of America
|
Phase: | Standing |
Nature: | Executive |
Departure airport: | Palestine, TX (KPSN) |
Destination airport: | McKinney, TX (KTKI) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:After a cross-country flight and during the landing roll at the destination airport, the airplane's left main landing gear collapsed, causing substantial damage to the aileron.
An examination of the landing gear found the bell crank pivot bolt and gear down-lock broken.
A review of the airplane's maintenance manual revealed that the landing gear system is to be disassembled/inspected every 10 years/5,000 landings, after an initial inspection after 20 years or 10,000 landings. Additionally, the maintenance manual indicates that the main landing gear bell crank pivot bolt is to be inspected for wear every 3 years (or 500 landings), after an initial inspection at 3 years or 1,000 landings. A review of the airplane maintenance records did not reveal an entry were the landing gear inspections had been accomplished. The records revealed the airframe had accumulated 5,799.3 hours at the time of the last annual inspection, that was dated September 1, 2016.
It's likely that the landing gear pivot bolt developed a crack over time, which then failed during landing, causing the gear to collapse.
Probable Cause: The failure of the bell crank pivot bolt which resulted in the left main landing gear collapse. Contributing to the accident was the lack of landing gear inspections in accordance with the airplane manufacturer's maintenance manuals.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CEN17LA351 |
Status: | Investigation completed |
Duration: | 1 year and 2 months |
Download report: | Final report |
|
Sources:
NTSB
Location
Revision history:
Date/time | Contributor | Updates |
11-Nov-2018 08:34 |
ASN Update Bot |
Added |
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