# NTSB NYC71AN117: Dehavilland DHC-6, N121PM, Flushing, NY, June 4, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 4, 1971
- Place: Flushing, NY · FLUSHING, NY
- Location: 40.7654° N, 73.8174° W: Placed by OpenAirDocs: center of Flushing, NY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.7654&lon=-73.8174&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 6, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 161062
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC71AN117
- Page: https://openairdocs.org/ntsb/NYC71AN117

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0947   71/6/4    FLUSHING,NY         DEHAVILLAND DHC-6   CR-  0  0  2  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 0043                    N121PM              PX-  0  0  0  COMMUTER AIR CARRIER      48, 9330 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0  AIR TAXI-CARGO S-D        3846 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LAGUARDIA
        DEPARTURE POINT             INTENDED DESTINATION
          FLUSHING,NY                 ALBANY,NY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR ACCIDENT TO PERSON                       STATIC: IDLING ENGINE(S)
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: OTHER
        REMARKS- POST OFFICE EMPLOYEE WALKED INTO PROP AFTR LOADING MAIL.RAMP AREA LIGHTED.
```

## Aircraft

- Registration: [N121PM](https://openairdocs.org/aircraft/N121PM), registered now, S/N 14, built 1966 (OpenAirDocs)
- Reported make and model: DEHAVILLAND DHC-6
- Registry model: [Dehavilland DHC-6 TWIN OTTER](https://openairdocs.org/model/dehavilland-dhc-6-twin-otter) (registry code 2802606) (OpenAirDocs)
- Registry engine: [U/A Canada PT6 SER 578HP](https://openairdocs.org/engine/u-a-canada-pt6-ser-578hp) (registry code 61501, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Minor damage
- Airport: Laguardia

## Other investigations on N121PM (3)

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.

- [NTSB LAX91FA052](https://openairdocs.org/ntsb/LAX91FA052), Dec 9, 1990: de Havilland DHC-6-100 (N121PM), Perris Valley, CA, substantial damage. Probable cause: A LOSS OF POWER ON THE LEFT ENGINE DUE TO A FATIGUE FAILURE OF A COMPRESSOR TURBINE BLADE LEADING TO FURTHER COMPRESSOR BLADE DAMAGE; A WORN POWER TURBINE GOVERNOR THROTTLE CAM ASSEMBLY WHICH LED TO…
- [NTSB NYC70AN096](https://openairdocs.org/ntsb/NYC70AN096), Mar 6, 1970: Dehavilland DHC-6 (N121PM), Windsor Lock, CT, substantial damage
- [NTSB NYC67I0103](https://openairdocs.org/ntsb/NYC67I0103), Jan 19, 1967: Dehaviland DHC-6 (N121PM), Farmingdale, NY, incident, no damage

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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