Downend air crash
Bristol Aeroplane Bristol Britannia Type 301 · Unknown cause
Event
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- Event fatalities
- 15 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- 15
- Survivors
- 0
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- 1 · all on the ground
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
Bristol Britannia Type 301
- Aircraft type
- Bristol Britannia Type 301
- Category
- Airplane · from aircraft type
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- G-ANCA
- Operator
- Bristol Aeroplane
- Onboard fatalities
- 15
- Route
- From not recordedTo not recorded
Cause areas
- Not determined › Not determined
From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.
Approximate · Coordinates from the Wikipedia article; not checked against an investigation report.
From the Wikipedia article
The Downend air crash occurred on 6 November 1957 when a prototype Bristol Britannia aircraft crashed in woods near Overndale Road in Downend, a suburb of Bristol, England, on its landing approach at Filton airport during a test flight. All fifteen on board – four crew and 11 technicians – died in the crash.
Investigation and cause
Cause
The exact cause of the crash was never determined, but was suspected to be a malfunction of the autopilot, possibly due to faulty wiring. The company which manufactured the autopilot system issued a statement claiming it was not due to the autopilot system, but still altered the system in newer aircraft; the official report states unknown cause but "the autopilot system cannot be ruled out as the likely cause".
Another source cites the cause as "...an instrument failure which ultimately led to a loss of control."
Text from the Wikipedia article “Downend air crash” (revision 1339304763, retrieved 2026-09-18) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out. Read the article
Sources
Wikipedia article: Downend air crash
- Article
- Downend air crash
- Revision
- 1339304763 · 2026-02-19 · retrieved 2026-09-18
- Wikidata
- Q5303099
- Licence
- Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
- Record
- Wikipedia article "Downend air crash" (page 4227519, revision 1339304763)
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site
- Map position
- Wikipedia article coordinates
- Aircraft, operator and route
- Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
- Operation
- Reviewed correction (2026-09-26): A prototype Britannia operated by the Bristol Aeroplane Company with technicians on board on a test flight: a manufacturer's test flight, which is general aviation. The article: "a prototype Bristol Britannia aircraft crashed in woods near Overndale Road in Downend, a suburb of Bristol, England, on its landing approach at Filton airport during a test flight"
- Fatalities
- Wikipedia infobox: aircraft fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia infobox: summary
Source notes (1)
- Wikipedia · Facts from the Wikipedia article's infobox and coordinates, not checked against an investigation report. Independent review pending.