BOAC Flight 783
British Overseas Airways de Havilland DH.106 Comet · Crashed following structural failure in severe turbulence
From Kallang Airport, Singapore to London, England
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
- 43 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- 43
- 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
- Unknown
- 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
- Airline
de Havilland DH.106 Comet
- Flight
- BA783
- Aircraft type
- de Havilland DH-106
- 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-ALYV
- Operator
- British Overseas Airways
- Onboard fatalities
- 43
- Route
- From Kallang Airport, SingaporeTo London, England
Cause areas
- Aircraft › Aircraft structures
- Environmental issues › Conditions/weather/phenomena
- Personnel issues › Task performance
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
On 2 May 1953, BOAC Flight 783, a de Havilland Comet jetliner registered G-ALYV and operated by British Overseas Airways Corporation, broke up mid-air and crashed after encountering a severe squall, shortly after taking off from Calcutta (now Kolkata), India. All 43 passengers and crew on board were killed.
The crash was followed in less than a year by two more fatal accidents involving structural failure of Comet aircraft: BOAC Flight 781 and South African Airways Flight 201, after which the entire fleet was grounded until extensive redesign of the type was carried out, leading to the development of the Comet 2 version.
History of the flight
Flight 783 had originated in Singapore and was a service to London. After a scheduled stopover at Calcutta's Dum Dum Airport (now Netaji Subhas Chandra Bose International Airport), the aircraft departed on 2 May at 16:29 local time (10:59 GMT) on its next segment to Delhi.
Six minutes after takeoff, while the jet was climbing to 7500 ft, radio contact with air traffic control was lost. At around the same time, witnesses on the ground near the village of Jagalgori, around 25 mi north-west of Calcutta, observed the aircraft coming down in flames. Severe rain and thunderstorms were present in the area.
The wreckage of G-ALYV was later found strewn along a 5 mi track, with the main parts still on fire. There were no survivors.
Investigation and cause
Investigation
The subsequent investigation found that, after encountering a squall, the aircraft "suffered structural failure in the air which caused fire." The probable cause of the failure was reported as "overstressing which resulted from either: severe gusts encountered in the thundersquall, or overcontrolling or loss of control by the pilot when flying through the thunderstorm."
The investigators also recommended "to consider if any modification to the structure of the Comet is necessary."
Text from the Wikipedia article “BOAC Flight 783” (revision 1339318380, 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: BOAC Flight 783
- Article
- BOAC Flight 783
- Revision
- 1339318380 · 2026-02-19 · retrieved 2026-09-18
- Wikidata
- Q11616908
- 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 "BOAC Flight 783" (page 56617525, revision 1339318380)
- 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
- airline flight number in the infobox
- 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.