# NTSB UNK64X1391: Piper PA22, N5646Z, Houlton, ME, April 20, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 20, 1964
- Place: Houlton, ME · HOULTON, ME
- Location: 46.1214° N, 67.8322° W: Placed by OpenAirDocs: center of Houlton, ME, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.1214&lon=-67.8322&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 15, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 184340
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1391
- Page: https://openairdocs.org/ntsb/UNK64X1391

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0985  64/4/20    HOULTON ME          PIPER PA22          CR-  0  0  2  NONCOMMERCIAL             COMMERCIAL, AGE 48, 4000
        TIME - 2000                    N5646Z              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 100 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - INTERNATIONAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
```

## Aircraft

- Registration: [N5646Z](https://openairdocs.org/deregistered/N5646Z-1964-10-28), registration cancelled 1964-10-28, S/N 22-9469 (OpenAirDocs)
- Reported make and model: PIPER PA22
- Registry model: [Piper PA-22-108](https://openairdocs.org/model/piper-pa-22-108) (registry code 7102204) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: International

## Other investigations on N5646Z (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 UNK64X3908](https://openairdocs.org/ntsb/UNK64X3908), Sep 10, 1964: Piper PA-22 (N5646Z), Hancock, NH, substantial damage, 2 fatal

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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