# NTSB DEN70D0003: Piper PA-18, N1258C, Flagler, CO, March 18, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 18, 1969
- Place: Flagler, CO · FLAGLER, CO
- Location: 39.2966° N, 103.0646° W: Placed by OpenAirDocs: center of Flagler, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2966&lon=-103.0646&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 5, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 184816
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN70D0003
- Page: https://openairdocs.org/ntsb/DEN70D0003

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1725  69/3/18    FLAGLER,COLO        PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 38, 1600
        TIME - 1120                    N1258C              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 650 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - FLAGLER
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: LOW PASS
           COLLIDED WITH: DIRT BANK                                 LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- HEAD OF EXHAUST VALVE IN RT REAR CYLINDER BROKE OFF.
```

## Aircraft

- Registration: [N1258C](https://openairdocs.org/aircraft/N1258C), registered now, S/N 18-2497, built 1953 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18-135](https://openairdocs.org/model/piper-pa-18-135) (registry code 7101820) (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
- Airport: Flagler

## Other investigations on N1258C (3)

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 GAA17CA275](https://openairdocs.org/ntsb/GAA17CA275), May 11, 2017: Piper PA18 (N1258C), Seward, AK, substantial damage. Probable cause: The flight instructor's incorrect brake application during a high-speed taxi with a tailwind, which resulted in a nose-over.
- [NTSB GAA16CA264](https://openairdocs.org/ntsb/GAA16CA264), May 22, 2016: Piper PA18 (N1258C), Seward, AK, substantial damage. Probable cause: The pilot receiving instruction's failure to maintain proper airspeed and descent rate, and the flight instructor's delayed remedial action during the landing flare, which resulted in a hard landing…
- [NTSB ANC11CA076](https://openairdocs.org/ntsb/ANC11CA076), Aug 13, 2011: Piper PA-18-135 (N1258C), Coldfoot, AK, substantial damage. Probable cause: The pilot's inadvertent application of the right brake pedal during the landing roll, 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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