ASN Wikibase Occurrence # 283958
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Date: | Wednesday 16 June 2021 |
Time: | 18:05 LT |
Type: | Beechcraft 65 Queen Air U-8F |
Owner/operator: | Bemidji Aviation Services Inc |
Registration: | N62069 |
MSN: | LF-64 |
Year of manufacture: | 1962 |
Total airframe hrs: | 9624 hours |
Engine model: | Lycoming IO-720-A1B |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Goodland-Renner Field, KS (GLD/KGLD) -
United States of America
|
Phase: | Standing |
Nature: | Executive |
Departure airport: | Goodland-Renner Field, KS (GLD/KGLD) |
Destination airport: | Denver International Airport, CO (DEN/KDEN) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The pilot heard a loud bang while starting the right engine and noticed flames exiting the right wing. An airport surveillance camera captured a wing explosion that lasted about 1 second, which substantially damaged the right wing.
Examination revealed that the right wing outboard aft fuel bladder was brittle, with several holes due to age-related oxidation, and electrical wiring to the navigation lights was chafed in two locations, with evidence of electrical arcing. Review of maintenance records indicated that the airplane was inspected about 50 hours before the accident; the inspection included checking the fuel tanks for leakage, and electrical wiring for chafing. Based on the condition of the fuel bladder and wiring, it is likely that the most recent inspection was inadequate.
About 2 years before the accident, the airplane's left wing exploded due to ignition of fuel vapor. Following the most recent wing explosion accident, the operator instituted several maintenance protocols to aid in detection of a fuel leak, including top-off of the fuel system in conjunction with the wing inspection procedure checklist or unscheduled fuel system maintenance.
Probable Cause: Maintenance personnel's inadequate inspection of the airplane, which failed to detect and correct chafed electrical wiring and a degraded fuel bladder with holes, which resulted in ignition of fuel vapor and a right wing explosion.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CEN21LA274 |
Status: | Investigation completed |
Duration: | |
Download report: | Final report |
|
Sources:
NTSB CEN21LA274
History of this aircraft
Other occurrences involving this aircraft
22 February 2019 |
N62069 |
Bemidji Aviation Services Inc |
0 |
near Colby Municipal Airport (KCBK), Thomas County, KS |
|
sub |
9 July 2019 |
N62069 |
Bemidji Aviation Services Inc |
0 |
Sidney, NE |
|
sub |
Location
Revision history:
Date/time | Contributor | Updates |
28-Sep-2022 16:30 |
ASN Update Bot |
Added |
17-Nov-2022 20:48 |
Ron Averes |
Updated [Aircraft type, Narrative] |
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