# NTSB LAX71AL066: Dehavilland 104-7X, N4922V, Coolidge, AZ, May 6, 1971

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: May 6, 1971
- Place: Coolidge, AZ · COOLIDGE, AZ
- Location: 32.9778° N, 111.5176° W: Placed by OpenAirDocs: center of Coolidge, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.9778&lon=-111.5176&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 12 fatal
- Status: Completed, report August 17, 1972
- Safety recommendations: Yes
- NTSB case key (mKey): 79655
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX71AL066
- Board report AAR7219 (PDF): https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR7219.pdf
- Page: https://openairdocs.org/ntsb/LAX71AL066

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 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](https://openairdocs.org/deregistered/N4922V-1971-07-08), registration cancelled 1971-07-08, S/N 04285 (OpenAirDocs)
- Reported make and model: DEHAVILLAND 104-7X
- Registry model: [Dehavilland DH104 DOVE 7AXC](https://openairdocs.org/model/dehavilland-dh104-dove-7axc) (registry code 2800417) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Destroyed

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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