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Last updated: 24 October 2021
Status:Definitief
Datum:zaterdag 21 mei 1988
Tijd:16:12
Type:Silhouette image of generic DC10 model; specific model in this crash may look slightly different
McDonnell Douglas DC-10-30
Luchtvaartmaatschappij:American Airlines
Registratie: N136AA
Constructienummer: 47846/69
Bouwjaar: 1973
Aantal vlieguren:61322
Aantal vluchten:12864
Motoren: 3 General Electric CF6-50C2
Bemanning:slachtoffers: 0 / inzittenden: 14
Passagiers:slachtoffers: 0 / inzittenden: 240
Totaal:slachtoffers: 0 / inzittenden: 254
Schade: Groot
Gevolgen: Written off (damaged beyond repair)
Plaats:Dallas/Fort Worth International Airport, TX (DFW) (   Verenigde Staten)
Fase: Start (TOF)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Dallas/Fort Worth International Airport, TX (DFW/KDFW), Verenigde Staten
Vliegveld van aankomst:Frankfurt International Airport (FRA/EDDF), Duitsland
Vluchtnummer:AA70
Beschrijving:
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:

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

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


Veiligheidsmaatregelen

NTSB issued 21 Safety Recommendations

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Foto's

photo of DC-10-30-N136AA
accident date: 21-05-1988
type: McDonnell Douglas DC-10-30
registration: N136AA
photo of DC-10-30-N136AA
accident date: 21-05-1988
type: McDonnell Douglas DC-10-30
registration: N136AA
 

Kaart
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 Dallas/Fort Worth International Airport, TX en Frankfurt International Airport bedraagt 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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