Accident description
Last updated: 2 August 2014
Status:Final
Date:Wednesday 12 March 2003
Time:15:28
Type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-412
Operator:Singapore Airlines
Registration: 9V-SMT
C/n / msn: 27137/990
First flight: 1993-08-04 (9 years 7 months)
Total airframe hrs:43627
Cycles:6712
Engines: 4 Pratt & Whitney PW4056
Crew:Fatalities: 0 / Occupants: 20
Passengers:Fatalities: 0 / Occupants: 369
Total:Fatalities: 0 / Occupants: 389
Airplane damage: Substantial
Airplane fate: Repaired
Location:Auckland International Airport (AKL) (   New Zealand) show on map
Phase: Takeoff (TOF)
Nature:International Scheduled Passenger
Departure airport:Auckland International Airport (AKL/NZAA), New Zealand
Destination airport:Singapore-Changi International Airport (SIN/WSSS), Singapore
Flightnumber: 286
Narrative:
Singapore Airlines flight SQ286 taxied to runway 05L at Auckland's International Airport and was cleared for takeoff. When the captain rotated the aeroplane for lift-off the tail struck the runway and scraped for some 490 metres until the aeroplane became airborne. The tail strike occurred because the rotation speed was 33 knots less than the 163 knots required for the aeroplane weight. The rotation speed had been mistakenly calculated for an aeroplane weighing 100 tonnes less than the actual weight of 9V-SMT. A take-off weight transcription error, which remained undetected, led to the miscalculation of the take-off
data, which in turn resulted in a low thrust setting and excessively slow take-off reference speeds. The system defences did not ensure the errors were detected, and the aeroplane flight management system itself did not provide a final defence against mismatched information being programmed into it.
During the take-off the aeroplane moved close to the runway edge and the pilots did not respond correctly to a stall warning.


The final report did not contain a "Probable cause".

Classification:
Tailstrike
Forced landing on runway

Sources:


Follow-up / safety actions

NTSB issued 5 Safety Recommendations
TAIC issued 5 Safety Recommendations

Show all AD's and Safety Recommendations

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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 Auckland International Airport to Singapore-Changi International Airport as the crow flies is 8385 km (5241 miles).

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