# NTSB SEA79FYM28: Cessna 206G, N756SR, The Dalles, OR, April 22, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 22, 1979
- Place: The Dalles, OR · THE DALLES, OR
- Location: 45.5984° N, 121.1524° W: Placed by OpenAirDocs: center of The Dalles, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5984&lon=-121.1524&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report July 3, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 135805
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA79FYM28
- Page: https://openairdocs.org/ntsb/SEA79FYM28

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1600  79/4/22  NR.THE DALLES,OR      CESSNA 206G         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 31, 730
        TIME - 1600                    N756SR              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 10 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          RENO,NV                     SEATTLE,WA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           SYSTEMS - OTHER SYSTEMS: VACUUM SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - SPATIAL DISORIENTATION
           PILOT IN COMMAND - EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT
        FACTOR(S)
           WEATHER - OTHER
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  7000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          NONE                                                     IFR
        TYPE OF FLIGHT PLAN
          IFR (VFR CONDITIONS ON TOP)
        REMARKS- T AND B NOT INSTALLED.VACUUM PUMP SHAFT SHEARED.HI-SPEED SPIRAL.MULTIPLE CLOUD LAYERS.LNDD OK.
```

## Aircraft

- Registration: [N756SR](https://openairdocs.org/deregistered/N756SR-2013-07-08), registration cancelled 2013-07-08, S/N U20604324, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA 206G
- Registry model: [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g) (registry code 2073357) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19790422010759A](https://openairdocs.org/incident/19790422010759A), Apr 22, 1979: Cessna 206CESSNA, The Dalles, OR, Substantial damage. Made IFR descent with inoperative turn needle. Lost vacuum, lost control. Recovered in a high speed dive. Warped ac

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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