# NTSB SEA81DYM20: Beech C23, N5217M, Portland, OR, February 10, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 10, 1981
- Place: Portland, OR · PORTLAND, OR
- Location: 45.5235° N, 122.6762° W: Placed by OpenAirDocs: center of Portland, OR, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5235&lon=-122.6762&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 8, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 127352
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA81DYM20
- Page: https://openairdocs.org/ntsb/SEA81DYM20

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0290  81/2/10    PORTLAND,OR         BEECH C23           CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1430                    N5217M              PX-  0  0  0  DUAL                      AGE 35, 1650 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            250 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - PORTLAND INTL
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          PORTLAND,OR                 RETURN                       SCAPPOOSE,OR
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
           DUAL STUDENT - MISJUDGED SPEED
           DUAL STUDENT - IMPROPER LEVEL OFF
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        REMARKS- LND HARD AT SCAPPOOSE,CONT TO PORTLAND. RT GR WAS DMGD.
```

## Aircraft

- Registration: N5217M (not matched to a registry record)
- Reported make and model: BEECH C23
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Portland Intl

## 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 19810210003529A](https://openairdocs.org/incident/19810210003529A), Feb 10, 1981: Beech C23, Portland, OR, Substantial damage. Landing gear collapsed on touchdown due to previous hard landing at another arport. Factor CFI supervision

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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