# NTSB ANC70AA070: Dehavilland DHC-2, N7620, Prudhoe Bay, AK, April 13, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 13, 1970
- Place: Prudhoe Bay, AK · PRUDHOE BAY, AK
- Location: 70.2553° N, 148.3372° W: Placed by OpenAirDocs: center of Prudhoe Bay, AK, within about 11 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=70.2553&lon=-148.3372&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report August 26, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 135579
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC70AA070
- Page: https://openairdocs.org/ntsb/ANC70AA070

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0806  70/4/13    PRUDHOE BAY,ALAS    DEHAVILLAND DHC-2   CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 0840                    N7620               PX-  0  0  2  AIR TAXI-PASSG            32, 3733 TOTAL HOURS, 281
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - PRUDHOE BAY
        DEPARTURE POINT             INTENDED DESTINATION
          FLAXMAN ISLAND,ALAS         PRUDHOE BAY,ALAS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: SNOWBANK                                  TAKEOFF: INITIAL CLIMB
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - TORQUEMETER: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FLUCTUATING
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           PILOT IN COMMAND - FAILED TO ABORT TAKEOFF
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        REMARKS- PAST TROUBLE WITH TORQUE UNIT SURGE.R SKI DAMAGED ON DEP.CONT TO DEST,GR FAILED AT T/D.
```

## Aircraft

- Registration: [N7620](https://openairdocs.org/deregistered/N7620-1986-11-13), registration cancelled 1986-11-13, S/N 1574-TB6 (OpenAirDocs)
- Reported make and model: DEHAVILLAND DHC-2
- Registry model: [Dehavilland BEAVER DHC-2 MK.3](https://openairdocs.org/model/dehavilland-beaver-dhc-2-mk-3) (registry code 2800107) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Substantial damage
- Airport: Prudhoe Bay

## Other investigations on N7620 (1)

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 ANC75AA010](https://openairdocs.org/ntsb/ANC75AA010), Aug 13, 1974: Dehavilland DHC-2 (N7620), Anaktuvuk, AK, destroyed, 4 fatal

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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