ASN Wikibase Occurrence # 46066
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| Date: | Thursday 9 July 1964 |
| Time: | 09:30 |
| Type: | Lockheed A-12 Oxcart |
| Owner/operator: | Lockheed Aircraft Co |
| Registration: | 60-6939 |
| MSN: | 133 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Location: | Groom Dry Lake, NV -
 United States of America
|
| Phase: | Approach |
| Nature: | Military |
| Departure airport: | [Redacted] |
| Round Robin | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
Crashed. Pilot Bill Parks ejected.
The primary cause of this accident was that the outboard elevon servo valve stuck in the partially open position causing the right out board elevon to gradually move to the full down position . This imparted more left roll to the aircraft than could be overcome by the pilot . The sticking of this valve resulted from the combination of three conditions ; warpage of the valve incurred in operational use , a temperature shock condition due to a rapid change in flight conditions and metal particles with in the servo valve probably accumulated during manufacture . (USAF AIB)
Sources:
Air Enthusiast 52
https://www.cia.gov/readingroom/docs/CIA-RDP71B00590R000100040001-1.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 06-Mar-2016 15:22 | TB | Updated [Cn, Operator, Country, Phase, Narrative] |
| 06-Mar-2016 15:42 | TB | Updated [Aircraft type, Location] |
| 30-Jan-2018 17:27 | Anon. | Updated [Operator] |
| 22-Jan-2022 14:58 | TB | Updated [Operator] |
| 02-Sep-2022 12:12 | KagurazakaHanayo | Updated [Time, Departure airport, Destination airport, Source, Narrative] |
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