# NTSB ANC75AA066: Beech D50C, N4031H, Nondalton, AK, March 16, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 16, 1975
- Place: Nondalton, AK · NONDALTON, AK
- Location: 59.9744° N, 154.8636° W: Placed by OpenAirDocs: center of Nondalton, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=59.9744&lon=-154.8636&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report April 1, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 147924
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC75AA066
- Page: https://openairdocs.org/ntsb/ANC75AA066

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0333  75/3/16  NR.NONDALTON,AK       BEECH D50C          CR-  0  0  1  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 1330                    N4031H              PX-  0  0  3  AIR TAXI-PASSG            33, 7211 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1099 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - NONDALTON
        DEPARTURE POINT             INTENDED DESTINATION
          KENAI,AK                    LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - DIVERTED ATTENTION FROM OPERATION OF AIRCRAFT
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
        FACTOR(S)
           WEATHER - LOW CEILING
           WEATHER - FOG
           MISCELLANEOUS ACTS,CONDITIONS - WHITEOUT
        WEATHER BRIEFING - BRIEFING RECEIVED-METHOD UNKNOWN
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          3 MILES OR LESS                                          NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       20
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      VFR
        REMARKS- DSCND INTO FROZEN LAKE.
```

## Aircraft

- Registration: [N4031H](https://openairdocs.org/deregistered/N4031H-1976-05-21), registration cancelled 1976-05-21, S/N DH-287, built 1960 (OpenAirDocs)
- Reported make and model: BEECH D50C
- Registry model: [Beech D50C](https://openairdocs.org/model/beech-d50c) (registry code 1152520) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Nondalton

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750316007049A](https://openairdocs.org/incident/19750316007049A), Mar 16, 1975: Beech D50C, Nondalton, AK, Substantial damage. Dscnd into frozen lake.

## Other investigations on N4031H (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 ANC69A0036](https://openairdocs.org/ntsb/ANC69A0036), Jan 17, 1969: Beech D50C (N4031H), Umiat, AK, substantial 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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