# NTSB ANC71DAG26: Piper PA-18, N9783D, Denali, AK, August 30, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 30, 1970
- Place: Denali, AK · DENALI, AK
- Location: 63.1786° N, 147.4661° W: Placed by OpenAirDocs: center of Denali, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=63.1786&lon=-147.4661&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 16, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 126941
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC71DAG26
- Page: https://openairdocs.org/ntsb/ANC71DAG26

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3589  70/8/30    DENALI,ALAS         PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 29, 4600
        TIME - 1000                    N9783D              PX-  0  0  0  BUSINESS                  TOTAL HOURS, 3500 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SUSITNA LODGE,ALAS          LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - MISJUDGED ALTITUDE
           MISCELLANEOUS ACTS,CONDITIONS - FLEW INTO BLIND CANYON
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- ACFT SETTLED DRG 180DEG,R FLOAT AND WING HIT SIDE OF MTN.ACFT FLOAT EQPD.
```

## Aircraft

- Registration: [N9783D](https://openairdocs.org/aircraft/N9783D), registered now, S/N 18-6853, built 1959 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18A 150](https://openairdocs.org/model/piper-pa-18a-150) (registry code 7101837) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N9783D (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 ANC14LA055](https://openairdocs.org/ntsb/ANC14LA055), Jul 19, 2014: Piper PA-18-150 (N9783D), Palmer, AK, substantial damage. Probable cause: The pilot’s inadvertent application of excessive brake pressure during landing on a rough surface, which resulted in a nose-over.

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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