# NTSB SEA79FYK03: Cessna 210, N5733J, Triangle Lake, OR, November 13, 1978

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: November 13, 1978
- Place: Triangle Lake, OR · TRIANGLE LAKE, OR
- Location: 44.1707° N, 123.5790° W: Placed by OpenAirDocs: center of Triangle Lake, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.1707&lon=-123.5790&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report December 26, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 144015
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA79FYK03
- Page: https://openairdocs.org/ntsb/SEA79FYK03

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3274  78/11/13   TRIANGLE LAKE,OR    CESSNA 210          CR-  0  1  1  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0735                    N5733J              PX-  0  0  0  DUAL                      AGE 27, 1805 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            198 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          NORTH BEND,OR               PORTLAND,OR
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CRANKSHAFT
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE-WEAR/PLAY
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NR 4 COUNTERWEIGHT CAME LOOSE. PINS WORN. 191 HRS SINCE ENG OVERHAUL.USED CRANKSHAFT INSTALLED.
```

## Aircraft

- Registration: [N5733J](https://openairdocs.org/deregistered/N5733J-1990-01-31), registration cancelled 1990-01-31, S/N 17273829 (OpenAirDocs)
- Reported make and model: CESSNA 210
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (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 19781113036389A](https://openairdocs.org/incident/19781113036389A), Nov 13, 1978: Cessna 210H, Triangle Lake,O, OR, Substantial damage. Nr 4 counterweight came loose. Pins worn. 191 hrs since eng overhaulused crankshaft installed.

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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