LAX71AL066

NTSB accident investigation · Dehavilland 104-7X · Coolidge, AZ · May 6, 1971

Accident · FatalClosed
Date
May 6, 1971
Place
Coolidge, AZ · COOLIDGE, AZ
Injuries
12 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N4922VDehavilland 104-7X
Status
Completed · report August 17, 1972
Safety recommendations
Yes
Case key
79655

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

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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
----------------------------------------------------------------------------------------------------------------------------
3-0038   71/5/6    COOLIDGE,ARIZ       DEHAVILLAND 104-7X  CR-  2  0  0  COMMERCIAL                COMMERCIAL, AGE 31, 6000
        TIME - 1315                    N4922V              PX- 10  0  0  COMMUTER AIR CARRIER      TOTAL HOURS, 2500 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0  AIR TAXI-PASSG S-D        TYPE, INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          TUCSON,ARIZ                 PHOENIX,ARIZ
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           AIRFRAME - WINGS: WING ATTACHMENT FITTINGS,BOLTS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: POOR/INADEQUATE DESIGN
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
         FIRE AFTER IMPACT
        REMARKS- R WING LWR ATTACH FITTING FRACTURED DUE FATIGUE WHICH PROPAGATED IN AREA OF CORROSION AND FRETTING

Aircraft

Registration
N4922V
Reported as
Dehavilland 104-7X
Category
Airplane
Engine
turbo prop
Damage
Destroyed

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.