Accident description
Last updated: 20 December 2014
Status:Final
Date:Sunday 5 November 2000
Time:20:57
Type:Silhouette image of generic B742 model; specific model in this crash may look slightly different
Boeing 747-2H7B (SCD)
Operator:Cameroon Airlines
Registration: TJ-CAB
C/n / msn: 22378/508
First flight: 1981-02-06 (19 years 9 months)
Total airframe hrs:48770
Cycles:12872
Engines: 4 Pratt & Whitney JT9D-7Q
Crew:Fatalities: 0 / Occupants: 16
Passengers:Fatalities: 0 / Occupants: 187
Total:Fatalities: 0 / Occupants: 203
Airplane damage: Damaged beyond repair
Location:Paris-Charles de Gaulle Airport (CDG) (   France) show on map
Phase: Landing (LDG)
Nature:International Scheduled Passenger
Departure airport:Douala Airport (DLA/FKKD), Cameroon
Destination airport:Paris-Charles de Gaulle Airport (CDG/LFPG), France
Flightnumber: 070
Narrative:
Cameroon Airlines flight 070 departed Douala for a flight to Paris via Yaoundé. The intermediate stop at Yaoundé was not made because of a severe delay (about five hours) in departure. The aircraft, named "Mont Cameroun", climbed to cruising level FL350. The en route portion of the flight was uneventful. During the approach and landing two passengers were allowed on the flight deck and occupied the jumpseats. The final approach to runway 09R at the Charles de Gaulle Airport was flown at a speed of 160 knots. Flaps were selected at 30deg, the gear was extended and autopilot disengaged. The airplane touched down at a speed of 151 knots. After touchdown the captain selected reverse thrust. He then noted that the speedbrakes had not activated automatically, so he disarmed the autobraking system. About 1700m down the runway the plane went off the right side. The 747 ran across a drainage ditch, causing the nose gear to be torn off. It appeared that the number one engine reverser was not activated and the engine was operating at full power.

PROBABLE CAUSE: "The initial cause of the accident was the incomplete reduction of thrust on the left outer engine at the beginning of deceleration. This caused the de-activation of the automatic braking system and the non-extension of the nr.1 thrust reverser. The inadvertent selection of full thrust on this engine after the landing created a high thrust asymmetry leading to the runway excursion. The lack of co-ordination and of joint control by the crew members, perhaps aggravated by the presence of third parties in the cockpit, contributed to the development of this situation."

Classification:
Runway excursion

Sources:
» Le Messager
» S. Tuchscherer
» Tommy Maurer

Official accident investigation report
investigating agency: Bureau d'Enquêtes et d'Analyses (BEA) - France
report status: Final
report number: BEA tj-b001105
download report: BEA tj-b001105
cover

Photos

photo of Boeing 747-2H7B (SCD) TJ-CAB
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photo of Boeing 747-2H7B (SCD) TJ-CAB
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Map
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 Douala Airport to Paris-Charles de Gaulle Airport as the crow flies is 5025 km (3141 miles).

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Boeing 747

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