# NTSB SEA72FTI03: Cessna 180, N4577B, Helena, MT, July 31, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 31, 1971
- Place: Helena, MT · HELENA, MT
- Location: 46.5955° N, 112.0187° W: Placed by OpenAirDocs: center of Helena, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.5955&lon=-112.0187&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report March 13, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 162374
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA72FTI03
- Page: https://openairdocs.org/ntsb/SEA72FTI03

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2713  71/7/31    HELENA,MONT         CESSNA 180          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 25, 273
        TIME - 1405                    N4577B              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 13 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - HELENA
        DEPARTURE POINT             INTENDED DESTINATION
          HELENA,MONT                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAKEOFF: RUN
           GEAR COLLAPSED                                           TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- ACFT DRIFTED L ON TKOF RUN,PLT OVERCORRECTED,GND LOOPED TO THE R,SUB DMG TO L GR.
```

## Aircraft

- Registration: [N4577B](https://openairdocs.org/aircraft/N4577B), registered now, S/N 31476, built 1955 (OpenAirDocs)
- Reported make and model: CESSNA 180
- Registry model: [Cessna 180](https://openairdocs.org/model/cessna-180) (registry code 2072602) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Helena

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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