ASN Wikibase Occurrence # 267725
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| Date: | Tuesday 14 September 2021 |
| Time: | 00:19 LT |
| Type: | Northrop B-2A Spirit |
| Owner/operator: | United States Air Force (USAF) |
| Registration: | 89-0129 |
| MSN: | 1014 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Warrensburg-Whiteman AFB, MO (SZL/KSZL) -
 United States of America
|
| Phase: | Landing |
| Nature: | Military |
| Departure airport: | Warrensburg-Whiteman AFB, MO (SZL/KSZL) |
| Warrensburg-Whiteman AFB, MO (SZL/KSZL) | |
| Investigating agency: | USAF AIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The United States Air Force (USAF) B-2A Spirit strategic bomber crewed by two active duty pilots, experienced a left main landing gear (LMLG) collapse while landing on the runway at Whiteman Air Force Base (AFB), Missouri.
At 00:14 local time, while on approach to land, the crew extended the aircraft’s landing gear as normal, but almost immediately received system notifications of failures in two of the aircraft's four
hydraulic systems. The crew assessed that the aircraft's landing gear were not fully deployed and, at 00:15, initiated a successful emergency extension to deploy the gear for landing. Cockpit indications then reflected all three landing gear in the down and locked position. At 00:16, the crew declared an inflight emergency (IFE) and received clearance to land. At 00:19, the aircraft
touched down normally on the Whiteman AFB runway. Within seconds of touching down, however, the LMLG collapsed as the aircraft was still rolling down the runway at over 100 kts per hour.
The gear collapse led to the aircraft's left wing contacting and dragging along the runway until the aircraft came to rest in the grassy area east of the runway, roughly one mile from its touchdown point. Both pilots were uninjured and exited the aircraft safely. The aircraft suffered significant damage due to the initial gear collapse and the resulting dragging of the wing along the runway.
The Abbreviated Accident Investigation Board (AAIB) President found, by a preponderance of the evidence, the cause of the mishap was that the aircraft's LMLG lock link springs failed to provide
sufficient pressure to maintain the lock links in the locked position, which resulted in a LMLG collapse during the aircraft's landing. Further, the AAIB President found, by a preponderance of the
evidence, that one factor substantially contributed to the mishap: the failure of a hydraulic CryoFit coupling that drove a rapid a loss of hydraulic fluid in the #1 and #4 hydraulic systems, which
isolated the LMLG lock link actuator and prevented its use in assisting the LMLG lock link to remain down and locked.
Accident investigation:
 |
|
Sources:
https://www.foxnews.com/us/b2-stealth-bomber-damaged-emergency-landing-whiteman-air-force-base
https://www.thedrive.com/the-war-zone/42392/damaged-b-2-spirit-is-sitting-wing-down-off-the-runway-after-landing-mishap
Media:
USA - Whiteman Air Force Base in Missouri.
— PLANES OF LEGEND (@PlanesOfLegend) September 16, 2021
Incident Northrop Grumman B-2 Spirit , 14 Sep 2021 https://t.co/iRT4Vv7t5Q via @AviationSafety https://t.co/VqvPFCFe7D
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Sep-2021 06:50 | gerard57 | Added |
| 16-Sep-2021 07:46 | Iceman 29 | Updated [Location, Source, Embed code, Damage, Narrative] |
| 16-Sep-2021 07:51 | Iceman 29 | Updated [Embed code, Narrative] |
| 17-Sep-2021 17:35 | harro | Updated [Aircraft type, Destination airport] |
| 25-Mar-2022 10:08 | harro | Updated [Time, Aircraft type, Registration, Total occupants, Location, Departure airport, Destination airport, Source, Narrative, Accident report] |
| 25-Mar-2022 10:09 | harro | Updated [Cn, Location] |
Corrections or additions? ... Edit this accident description
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