# NTSB ANC71AA047: Helio Acft H-250, N5463E, Kobuk, AK, March 22, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 22, 1971
- Place: Kobuk, AK · KOBUK, AK
- Location: 66.9236° N, 156.9043° W: Placed by OpenAirDocs: center of Kobuk, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=66.9236&lon=-156.9043&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 19, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 161356
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC71AA047
- Page: https://openairdocs.org/ntsb/ANC71AA047

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4232  71/3/22    KOBUK,ALAS          HELIO ACFT H-250    CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 46, 4800
        TIME - 1715                    N5463E              PX-  0  0  1  AIR TAXI-PASSG            TOTAL HOURS, 252 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - KOBUK
        DEPARTURE POINT             INTENDED DESTINATION
          KOBUK,ALAS                  KOTZEBUE,ALAS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: OBJECT                                    TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           TERRAIN - SNOW-COVERED
           TERRAIN - HIDDEN OBSTRUCTIONS
        REMARKS- WHEEL/SKI EQPD.SNW CVRD FROZEN RIVER,HIT HIDDEN STUMP.
```

## Aircraft

- Registration: [N5463E](https://openairdocs.org/deregistered/N5463E-2013-04-18), registration cancelled 2013-04-18, S/N 2519, built 1965 (OpenAirDocs)
- Reported make and model: HELIO ACFT H-250
- Registry model: [Helio H-250](https://openairdocs.org/model/helio-h-250) (registry code 4300302) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Kobuk

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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