Unfallbericht:Boeing 747 D-ABYB was taking off for the last leg of the Frankfurt (FRA) - Nairobi (NBO) - Johannesburg (JNB) flight when the crew felt vibration or buffeting following lift off. The captain, suspecting wheel imbalance, raised the gear. A lack of acceleration forced the crew to lower the nose in order to maintain airspeed. The Boeing continued to descend however and contacted the ground 1120m past the end of runway 24 and struck an elevated road 114m further on. The aircraft broke up and caught fire before coming to rest 454m past the initial point of impact.
|Datum:||Mittwoch 20 November 1974|
|Baujahr:|| 1970-03-30 (4 years 8 months)|
|Triebwerk:|| 4 Pratt & Whitney JT9D-7|
|Besatzung:||Todesopfer: 4 / Insassen: 17|
|Fluggäste:||Todesopfer: 55 / Insassen: 140|
|Gesamt:||Todesopfer: 59 / Insassen: 157 |
|Konsequenzen:|| Written off (damaged beyond repair)|
|Unfallort:||Nairobi International Airport (NBO) ( Kenia)
|Flugphase:|| Start (TOF)|
|Flug von:||Nairobi International Airport (NBO/HKNA), Kenia|
|Flug nach:||Johannesburg International Airport (JNB/FAJS), Südafrika|
PROBABLE CAUSE: "The accident was caused by the crew initiating a take-off with the leading edge flaps retracted because the pneumatic system which operates them had not been switched on. This resulted in the aircraft becoming airborne in a partially stalled condition which the pilots did not identify in the short time available to them for recovery. Major contributory factors were the lack of warning of a critical condition of leading edge flap position and the failure of the crew to complete satisfactorily their checklist items."
» Flight International 28.08.1976 (481)
» ICAO Circular 132-AN/93 (181-194)
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Nairobi International Airport to Johannesburg International Airport as the crow flies is 2898 km (1812 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.