Accident
Last updated: 23 October 2014
Status:Schlussbericht
Datum:Samstag 21 Mai 1988
Zeit:16:12
Flugzeugtyp:McDonnell Douglas DC-10-30
Fluggesellschaft:American Airlines
Kennzeichen: N136AA
Werknummer: 47846/69
Baujahr: 1973
Betriebsstunden:61322
Anzahl Zyklen der Zelle:12864
Triebwerk: 3 General Electric CF6-50C2
Besatzung:Todesopfer: 0 / Insassen: 14
Fluggäste:Todesopfer: 0 / Insassen: 240
Gesamt:Todesopfer: 0 / Insassen: 254
Sachschaden: schwer beschädigt
Konsequenzen: Written off (damaged beyond repair)
Unfallort:Dallas/Fort Worth International Airport, TX (DFW) (   USA) show on map
Flugphase: Start (TOF)
Betriebsart:Internationaler Linienflug
Flug von:Dallas/Fort Worth International Airport, TX (DFW/KDFW), USA
Flug nach:Frankfurt International Airport (FRA/EDDF), Deutschland
Flugnummer: 70
Unfallbericht:
The crew of American Flight 70 rejected the takeoff when the slat disagree light illuminated and the takeoff warning horn sounded at 166 knots (V1), but the aircraft accelerated to 178 knots ground speed before it began to decelerate. The deceleration was normal until 130 knots where an unexpected rapid decay in the deceleration occurred. The aircraft ran off the end of the runway at 95 knots, the nose gear collapsed, and the aircraft came to a stop 1,100 feet beyond the end of the runway. Eight of the ten brake sets failed. Post-accident examination of the brakes revealed that excessive brake wear occurred during the rejected takeoff. Testing showed that DC-10 worn brakes have a much greater wear rate during a rejected takeoff. The FAA did not require worn brake testing. Douglas did not use brake wear data from rto certification tests to set more conservative brake wear replacement limits. New brakes were used for those tests.

PROBABLE CAUSE:
landing gear, normal brake system .. inadequate
acft/equip,inadequate aircraft component .. manufacturer
inadequate substantiation process .. manufacturer
inadequate certification/approval, aircraft .. FAA (organization)
landing gear, normal brake system .. failure, total
CONTRIBUTING FACTORS
flt control syst,wing slat system .. false indication

Informationsquelle:
» Aviation Week & Space Technology 5.3.90 (78)
» ICAO Adrep Summary 4/90 (#26)
» NTSB/SIR-90/02 (5)


Sicherheitsempfehlungen

NTSB issued 21 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 Dallas/Fort Worth International Airport, TX to Frankfurt International Airport as the crow flies is 8203 km (5127 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.
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