British Airways Boeing 747-436 incident
Boeing 747-436 · Incident
From FAJS · Johannesburg to London Heathrow Airport (EGLL)
Event
- NTSB case
- ENG09WA005
- 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
- Incident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Unknown · led by another country; figures from NTSB notifications
- Event fatalities
- Unknown
- Ground fatalities
- 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
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Not recorded
Boeing 747-436
- Aircraft type
- Boeing 747
- Category
- Airplane
- 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-BYGA
- Operator
- British Airways
- Onboard fatalities
- Unknown
- Route
- From FAJS · JohannesburgTo London Heathrow Airport (EGLL), London Heathrow
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Non-U.S., Commercial
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Not recorded
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Not recorded
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- None
Cause areas
No findings designated as a cause are recorded in the NTSB data yet.
Approximate · Estimated position: the centre of Johannesburg, the place the record names. Not the accident site.
NTSB narrative
On May 11, 2009 at 18:37 UTC, a British Airways Boeing 747, powered by Rolls-Royce RB211-524H2-T engines, experienced a No. 3 thrust reverser unlock light illumination during the takeoff roll from the Tambo International Airport (FAJS - formerly known as Johannesburg International Airport) while the airplane was traveling at 124 knots. The No. 2 engine thrust reverser unlock light came on at 163 knots and just prior to rotation the slats retracted. The airplane rotated and climbed at a 200 foot per minute rate. The flight crew dumped fuel and did an air turn back to FAJS where a safe and uneventful landing was made.
The investigation is under the jurisdiction of the government of South Africa. Further information pertaining to this incident may be obtained from:
General Manager, Safety Promotion South African Civil Aviation Authority Private Bag X73 Halfway House Waterfall Park 1685 Pretoria South Africa
Tel.: (27) 011 545 1000 E-mail: mail@caa.co.za Fax: (27) 011 545 1465 Website: http://www.caa.co.za
This report is for information purposes only and contains only information obtained for, or released by the Government of South Africa.
Verbatim NTSB factual narrative from the NTSB dataset
Sources
NTSB record ENG09WA005
- Event ID
- 20090518X75604
- Case number
- ENG09WA005
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: damage. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 4432a5aae131d69451f838c9a71232de654d45ff5d62464c6c46284e0369bb59; retrieved 2026-09-15T11:05:21.076Z.