# NTSB MKC75FER01: Piper PA-24, N9137P, Rockford, MN, July 4, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 4, 1974
- Place: Rockford, MN · ROCKFORD, MN
- Location: 45.0908° N, 93.7452° W: Placed by OpenAirDocs: center of Rockford, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.0908&lon=-93.7452&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report August 28, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 128708
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC75FER01
- Page: https://openairdocs.org/ntsb/MKC75FER01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1933   74/7/4    ROCKFORD,MINN       PIPER PA-24         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 39, 463
        TIME - 1600                    N9137P              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 67 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          EDEN PRAIRIE,MINN           LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: CROP                                      LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - LUBRICATING SYSTEM: LINES,HOSES,FITTING
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - OIL EXHAUSTION-ENGINE LUBRICATION SYSTEM
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        REMARKS- OIL PRESSURE LINE,MIL H-6000-4069 1/2 ID,RUPTURD. TIME IN SERVICE 479 HRS.
```

## Aircraft

- Registration: [N9137P](https://openairdocs.org/aircraft/N9137P), registered now, S/N 24-4618, built 1966 (OpenAirDocs)
- Reported make and model: PIPER PA-24
- Registry model: [Piper PA-24-260](https://openairdocs.org/model/piper-pa-24-260) (registry code 7102406) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19740704021019A](https://openairdocs.org/incident/19740704021019A), Jul 4, 1974: Piper PA24260, Rockford, MN, Substantial damage. Oil pressure line,mil H-6000-4069 1/2 id,rupturd. Time in service 479 hrs.

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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