# NTSB OAK70OP012: Douglas DC-6, N90781, Oshima Isle, JA, March 20, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: March 20, 1970
- Place: Oshima Isle, JA · OSHIMA ISLE, Japan
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 11 uninjured
- Status: Completed, report October 12, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 138533
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK70OP012
- Page: https://openairdocs.org/ntsb/OAK70OP012

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0018  70/3/20    OSHIMA ISLE,JAPAN   DOUGLAS DC-6        CR-  0  1  6  MIL CONTRACT PASSG INTL   AIRLINE TRANSPORT, AGE
        TIME - 1434                    N90781              PX-  0  0  5                            UNK/NR, 15000 TOTAL
                                       DAMAGE-NONE         OT-  0  0  0                            HOURS, 5500 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        OPERATOR - SOUTHERN AIR TRANSPORT,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          IOWA JIMA                   YOKOTA AB,JAPAN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           TURBULENCE                                               IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           WEATHER - TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEAT BELT SIGN ON
        WEATHER BRIEFING - OTHER
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  10200
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          ZERO                                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          NONE                                                     VFR
        TYPE OF FLIGHT PLAN
          IFR
        REMARKS- FLT ATTENDANT BROKE LEG. WEA BRIEF BY USAF. PENETRATED CLOUD TOPS.
```

## Aircraft

- Registration: [N90781](https://openairdocs.org/deregistered/N90781-1972-05-31), registration cancelled 1972-05-31, S/N 44916 (OpenAirDocs)
- Reported make and model: DOUGLAS DC-6
- Registry model: [Douglas DC-6A](https://openairdocs.org/model/douglas-dc-6a) (registry code 3021706) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: 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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