# NTSB SEA69F0203: Hughes 269B, N9355F, Missoula, MT, April 7, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 7, 1969
- Place: Missoula, MT · MISSOULA, MT
- Location: 46.8721° N, 113.9940° W: Placed by OpenAirDocs: center of Missoula, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.8721&lon=-113.9940&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 28, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 118574
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA69F0203
- Page: https://openairdocs.org/ntsb/SEA69F0203

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0674   69/4/7    MISSOULA,MONT       HUGHES 269B         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1154                    N9355F              PX-  0  0  0  DUAL                      AGE 33, 3402 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            555 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - JOHNSON-BELL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
           DUAL STUDENT - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           DUAL STUDENT - SELECTED UNSUITABLE TERRAIN
           TERRAIN - WET,SOFT GROUND
```

## Aircraft

- Registration: [N9355F](https://openairdocs.org/deregistered/N9355F-2010-02-18), registration cancelled 2010-02-18, S/N 44-0073, built 1964 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Johnson-Bell

## Other investigations on N9355F (2)

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.

- [NTSB SEA00LA188](https://openairdocs.org/ntsb/SEA00LA188), Sep 24, 2000: Hughes 269B (N9355F), Burlington, WA, substantial damage. Probable cause: Mintenance personnel not following the mandatory service bulletin procedure of not exceeding 0.0005 inch paint thickness on the cylinder flange. Factors were the fatigue separation of multiple…
- [NTSB CHI65A0106](https://openairdocs.org/ntsb/CHI65A0106), Jun 20, 1965: Hughes 269B (N9355F), Gile, WI, substantial damage

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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