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Last updated: 24 April 2017
Datum:zaterdag 14 mei 1977
Tijd:09:33 UTC
Type:Silhouette image of generic B703 model; specific model in this crash may look slightly different
Boeing 707-321C
Vloog voor:IAS Cargo
Registratie: G-BEBP
Constructienummer: 18579/332
Bouwjaar: 1963
Aantal vlieguren:47621
Aantal vluchten:16723
Motoren: 4 Pratt & Whitney JT3D-3B
Bemanning:slachtoffers: 5 / inzittenden: 5
Passagiers:slachtoffers: 1 / inzittenden: 1
Totaal:slachtoffers: 6 / inzittenden: 6
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:3,7 km (2.3 mijl) W of Lusaka Airport (LUN) (   Zambia)
Fase: Nadering (APR)
Soort vlucht:Vracht
Vliegveld van vertrek:Nairobi International Airport (NBO/HKNA), Kenia
Vliegveld van aankomst:Lusaka Airport (LUN/FLLS), Zambia
The aircraft departed Nairobi (NBO) at 07:17 for the final leg of a London-Heathrow - Athens - Nairobi - Lusaka cargo flight. Boeing 707 G-BEBP proceeded to Lusaka at FL310. At 09:07 the flight was cleared to descend to FL110. This altitude was reached at 09:23, 37nm DME from Lusaka. A clearance was then given to descend further down to FL70 in 1000 feet steps. At 09:28 the co-pilot reported that the airfield was in sight. Lusaka then cleared the aircraft to descend to 6000 feet (2221 feet above runway elevation) and moments later a clearance was given to make a visual approach for runway 10. At 09:32 flaps were selected to 50 degrees. Suddenly, at 09:33, the complete right-hand horizontal stabilizer and elevator assembly were seen to separate in flight. The aircraft pitched rapidly nose down and dived vertically into the ground from a height of about 800 feet. The main wreckage was located 3660 m from the runway threshold.

Probable Cause:

CAUSE: "The accident was caused by a loss of pitch control following the in-flight separation of the right hand horizontal stabilizer and elevator as a result of a combination of metal fatigue and inadequate failsafe design in the rear spar structure. Shortcomings in design assessment, certification and inspection procedures were contributory factors.


Official accident investigation report
investigating agency: Air Accidents Investigation Branch (AAIB) - United Kingdom
report status: Final
report number: AAIB AAR 9/1978
report released:8 February 1979
duration of investigation: 1 year and 9 months
download report: Report on the accident to Boeing 707 321C, G-BEBP near Lusaka International Airport, Zambia, 14 May 1977 (AAIB AAR 9/1978)


AAIB issued 4 Safety Recommendations

Show all AD's and Safety Recommendations


photo of Boeing 707-321C G-BEBP
Flight profile of G-BEBP
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Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Nairobi International Airport en Lusaka Airport bedraagt 1806 km (1129 miles).

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