# NTSB MIA67A0019: Dehavilland 114, N4789C, San Juan, PR, August 3, 1966

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 3, 1966
- Place: San Juan, PR · SAN JUAN, PR
- Location: 18.4663° N, 66.1057° W: Placed by OpenAirDocs: center of San Juan, PR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=18.4663&lon=-66.1057&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 4 uninjured
- Status: Completed, report December 1, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 121375
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA67A0019
- Page: https://openairdocs.org/ntsb/MIA67A0019

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4407   66/8/3    SAN JUAN,PR         DEHAVILLAND 114     CR-  0  0  2  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1253                    N4789C              PX-  0  0  3  COMMUTER AIR CARRIER      44, 12000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0  AIR TAXI-PASSG S-I        260 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SAN JUAN INTL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: FAILURE TO PROVIDE ADEQ.DIRECTIVES,MANUAL,EQUIPMENT
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        REMARKS- NO.4 PROP SEPARATED,PARTS STRUCK CABIN.PROP BARREL FAILED.COMPANY DID NOT HAVE MAINT MANUALS.
```

## Aircraft

- Registration: [N4789C](https://openairdocs.org/deregistered/N4789C-2014-10-14), registration cancelled 2014-10-14, S/N 14080, built 1955 (OpenAirDocs)
- Reported make and model: DEHAVILLAND 114
- Registry model: [Dehavilland DH 114 HERON 2X](https://openairdocs.org/model/dehavilland-dh-114-heron-2x) (registry code 2800508) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: San Juan Intl

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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