ASN Wikibase Occurrence # 74663
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| Date: | Thursday 3 June 2010 |
| Time: | 14:30 |
| Type: |  Beechcraft C90 King Air |
| Owner/operator: | Federal Aviation Administration (ASW-280) |
| Registration: | N20 |
| MSN: | LJ-912 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 11204 hours |
| Engine model: | Pratt & Whitney Canada PT6A-21 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Fort Worth Alliance Airport (KAFW), TX -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Fort Worth, TX (AFW) |
| Fort Worth, TX (AFW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
As the landing gear was extended, the flightcrew heard a loud "bang" and observed a “Gear Unsafe” indication. After making a low pass, tower personnel reported that the main gear appeared to be down but that the nose gear was only partially extended. The certificated flight instructor raised the landing gear and made another low pass. Tower personnel said the main gear was up, but the nose gear was still only partially extended. The flightcrew elected to return to their home base and land. As speed dissipated, the nose gear folded and the airplane slid to a stop. A postaccident examination revealed that the nose gear actuator had failed due to insufficient lubrication of the nut assembly threads. The manufacturer recommends that the actuator be overhauled or replaced every 8000 cycles, or 6 years, whichever occurs first. At this time, the screw and nut assembly is to be greased. The failed actuator had accrued 1,576 cycles and 951.2 hours time-in-service. The maintenance manual does not require in-service lubrication of landing gear actuator.
Probable Cause: The failure of the nose gear actuator due to insufficient lubrication of the nut assembly threads.
Accident investigation:
 |
|
Sources:
NTSB
https://www.nbcdfw.com/news/local-beat/Live-Video-Emergency-Landing-at-Alliance-95536959.html
https://flightaware.com/live/flight/N20/history/20100603/1750Z/KACT/KAFW
History of this aircraft
Other occurrences involving this aircraft
| 23 June 2006 | N20 | Federal Aviation Administration | 0 | Windsor Locks, Connecticut | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Jun-2010 19:59 | RobertMB | Added |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 26-Nov-2017 17:11 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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