CHI81IA074

NTSB incident investigation · Boeing 747 · Minneapolis, MN · July 9, 1981

Incident · No injuriesClosed
Date
July 9, 1981
Place
Minneapolis, MN · MINNEAPOLIS, MN
Injuries
327 uninjured
Damage
Minor damage
Phase of flight
Approach
Aircraft
N602USBoeing 747
Status
Completed · report August 21, 1981
Report
Brief approved by the director
FAA report
19810709054169I
Case key
123599

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

On this page

NTSB brief

NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.

----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0013   81/7/9    MINNEAPOLIS,MN      BOEING 747          CR-  0  0 14  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 1620                    N602US              PX-  0  0313                            48, 17424 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            350 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - NORTHWEST AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          LONDON,ENGLAND              MINNEAPOLIS,MN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: SPOILERS AND SLOTS-LEADING EDGE FLAPS,SPEED BRAKES
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- LOW CYCLIC FATIGUE NO.7 LEADING EDGE FLAP DRIVE TORQUE TUBE,PN65B-80390-60.

Aircraft

Registration
N602US
Reported as
Boeing 747
Category
Airplane
Engine
turbo fan
Damage
Minor damage
Airport
Minneapolis Intl

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.