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DCA79AA016

1979-04-04 · SAGINAW, Michigan, United States · Minor · 1 aircraft · Status: Completed

N840TW has since been reassigned. It is now registered to a different aircraft (ROCKWELL INTERNATIONAL 690C, built 1981), which was not involved in this event.

Aircraft involved

Historical record (pre-1982 coded fields)

Aircraft
BOEING 727-31 · N840TW
Damage
Substantial
Craft type
Airplane
Classification
Accident
Light condition
E
Weather
IMC
Phase of flight
D9
Airport
DETROIT METRO

Weather at impact

Sky
OVERCAST
Wind
230° / 85 kt
Temp
-49° F

Aircraft history

Serial number
Z
Total time
35,412 hrs

Pilot

Certificate
DA (DA)
Total hours
15,710
Age
44

Probable cause (from PRE1982.MDB)

FULLY RETRACT,RESULTING IN ASYMMETRICAL SLATS.

Investigator remarks

LE SLATS EXTENDED.NR7 SLAT DID NOT SUBSEQUENTLY

Cause factors

  • 64/C/71 C
    PILOT IN COMMAND MISUSED OR FAILED TO USE FLAPS Cause
  • 64/C/23 C
    PILOT IN COMMAND IMPROPER OPERATION OF FLIGHT CONTROLS Cause
  • 64/L/08 L
    PILOT IN COMMAND DIVERTED ATTENTION FROM OPERATION OF AIRCRAFT
  • 70/L/D6 L
    AIRFRAME SPOILERS AND SLOTS-LEADING EDGE FLAPS,SPEED BRAKES
  • 88/L/47 L
    MISCELLANEOUS ACTS,CONDITIONS IMPROPER ALIGNMENT/ADJUSTMENT
  • 88/L/53 L
    MISCELLANEOUS ACTS,CONDITIONS ASYMETRICAL FLAPS
  • 88/K/49 K
    MISCELLANEOUS ACTS,CONDITIONS SEPARATION IN FLIGHT Joint factor

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table).

Source: NTSB pre-1982 historical archive. Docket 1 0022. Source file NTSB_1979_1_0022.txt. Modern CAROL record on data.ntsb.gov ↗.

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