# NTSB MKC72DER56: Piper PA-22, N4639Z, Morris, MN, April 19, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 19, 1972
- Place: Morris, MN · MORRIS, MN
- Location: 45.5859° N, 95.9054° W: Placed by OpenAirDocs: center of Morris, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5859&lon=-95.9054&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 7, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 166273
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC72DER56
- Page: https://openairdocs.org/ntsb/MKC72DER56

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1562  72/4/19    MORRIS,MINN         PIPER PA-22         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 21, 83 TOTAL
        TIME - 1345                    N4639Z              PX-  0  0  0  PRACTICE                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MORRIS MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          ALEXANDRIA,MINN             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SOFT RUNWAY
        REMARKS- SOFT RWY NOT DISCERNIBLE FROM THE AIR NOT MARKED,NO NOTAM. PLT SAW ACFT TKOF PRIOR HIS LDG.
```

## Aircraft

- Registration: [N4639Z](https://openairdocs.org/deregistered/N4639Z-2012-11-27), registration cancelled 2012-11-27, S/N 22-8157, built 1961 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22-108](https://openairdocs.org/model/piper-pa-22-108) (registry code 7102204) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Morris Muni

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.