# NTSB SEA67D0186: Piper PA-28, N6991W, Billings, MT, October 17, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 17, 1966
- Place: Billings, MT · BILLINGS, MT
- Location: 45.7833° N, 108.5007° W: Placed by OpenAirDocs: center of Billings, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.7833&lon=-108.5007&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 14, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 120463
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA67D0186
- Page: https://openairdocs.org/ntsb/SEA67D0186

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4211  66/10/17   BILLINGS MONT       PIPER PA-28         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1904                    N6991W              PX-  0  0  0  DUAL                      AGE 24, 225 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            218 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LOGAN FIELD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
        PROBABLE CAUSE(S)
           DUAL STUDENT - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
           DUAL STUDENT - IMPROPER LEVEL OFF
           DUAL STUDENT - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
```

## Aircraft

- Registration: [N6991W](https://openairdocs.org/aircraft/N6991W), registered now, S/N 28-21190 (OpenAirDocs)
- Reported make and model: PIPER PA-28
- Registry model: [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140) (registry code 7102802) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Logan Field

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.