# NTSB NYC71DFG14: Piper PA-24, N5570P, Twin Mountain, NH, January 17, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 17, 1971
- Place: Twin Mountain, NH · TWIN MOUNTAIN, NH
- Location: 44.2723° N, 71.5390° W: Placed by OpenAirDocs: center of Twin Mountain, NH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.2723&lon=-71.5390&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report October 19, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159493
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC71DFG14
- Page: https://openairdocs.org/ntsb/NYC71DFG14

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0137  71/1/17    TWIN MOUNTAIN,NH    PIPER PA-24         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 37, 250
        TIME - 1400                    N5570P              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - TWIN MOUNTAIN
        DEPARTURE POINT             INTENDED DESTINATION
          MANCHESTER,NH               TWIN MOUNTAIN,NH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: SNOWBANK                                  LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW WINDROWS
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW ON RUNWAY
```

## Aircraft

- Registration: [N5570P](https://openairdocs.org/deregistered/N5570P-2018-12-28), registration cancelled 2018-12-28, S/N 24-634 (OpenAirDocs)
- Reported make and model: PIPER PA-24
- Registry model: [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250) (registry code 7102404) (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: Twin Mountain

## Other investigations on N5570P (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 NYC75DNA48](https://openairdocs.org/ntsb/NYC75DNA48), Jun 24, 1975: Piper PA-24 (N5570P), Tewksbury, MA, 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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