# NTSB SEA71DWD24: Hughes 269A, N8701F, Chehalis, WA, December 26, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 26, 1970
- Place: Chehalis, WA · CHEHALIS, WA
- Location: 46.6642° N, 122.9654° W: Placed by OpenAirDocs: center of Chehalis, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.6642&lon=-122.9654&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 5, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159577
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71DWD24
- Page: https://openairdocs.org/ntsb/SEA71DWD24

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4489  70/12/26   CHEHALIS,WASH       HUGHES 269A         CR-  0  0  1  INSTRUCTIONAL             PRIVATE, AGE 34, 666
        TIME - 1030                    N8701F              PX-  0  0  0  TRAINING                  TOTAL HOURS, 45 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CHEHALIS
        DEPARTURE POINT             INTENDED DESTINATION
          MAYFIELD DAM,WASH           PUYALLUP,WASH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE
           TERRAIN - WET,SOFT GROUND
           WEATHER - CONDITIONS CONDUCIVE TO CARB./INDUCTION SYSTEM ICING
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                      2000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      40
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          180                                                       5
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- STUDENT ROTORCRAFT PLT. AUTOROTATED TO FLD MUDDY FROM RECENT FLOOD. SKIDS SANK IN MUD. 8 HRS DUAL.
```

## Aircraft

- Registration: [N8701F](https://openairdocs.org/deregistered/N8701F-2013-05-15), registration cancelled 2013-05-15, S/N 71-0011, built 1961 (OpenAirDocs)
- Reported make and model: HUGHES 269A
- Registry model: [Hughes 269A](https://openairdocs.org/model/hughes-269a) (registry code 4470402) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Chehalis

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.