# NTSB CHI74FEP49: Boeing A75N1, N111Q, Lone Rock, WI, June 13, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 13, 1974
- Place: Lone Rock, WI · LONE ROCK, WI
- Location: 43.1857° N, 90.2013° W: Placed by OpenAirDocs: center of Lone Rock, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.1857&lon=-90.2013&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 31, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 173421
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI74FEP49
- Page: https://openairdocs.org/ntsb/CHI74FEP49

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1732  74/6/13    LONE ROCK,WIS       BOEING A75N1        CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 52, 3155
        TIME - 0900                    N111Q               PX-  0  0  0  FERRY                     TOTAL HOURS, 180 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - TRI-COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
          DELAVAN,WIS                 LONE ROCK,WIS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
        FACTOR(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           SYSTEMS - HYDRAULIC SYSTEM: SEALS
        REMARKS- BRAKE LINING SATURATED WITH BRAKE FLUID.
```

## Aircraft

- Registration: [N111Q](https://openairdocs.org/deregistered/N111Q-2009-06-25), registration cancelled 2009-06-25, S/N 75-4846, built 1943 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Tri-County

## 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 19740613017879A](https://openairdocs.org/incident/19740613017879A), Jun 13, 1974: Boeing A75N1, Lone Rock, WI, Substantial damage. Brake lining saturated with brake fluid.

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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