# NTSB SEA75AS042: Cessna 170B, N3456C, Issaquah, WA, May 29, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: May 29, 1975
- Place: Issaquah, WA · ISSAQUAH, WA
- Location: 47.5462° N, 122.0581° W: Placed by OpenAirDocs: center of Issaquah, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.5462&lon=-122.0581&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal, 2 serious
- Status: Completed, report July 21, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148819
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA75AS042
- Page: https://openairdocs.org/ntsb/SEA75AS042

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1445  75/5/29    ISSAQUAH,WA         CESSNA 170B         CR-  0  1  0  MISCELLANEOUS             COMMERCIAL, AGE 29, 359
        TIME - 2038                    N3456C              PX-  3  1  0  PARAJUMP-SPORT            TOTAL HOURS, 101 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ISSAQUAH
        DEPARTURE POINT             INTENDED DESTINATION
          ISSAQUAH,WA                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - DIVERTED ATTENTION FROM OPERATION OF AIRCRAFT
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE AND CLEARANCE
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- CIRCLING TOP OF MTN. OBS WAVING TO PERS ON GRND.
```

## Aircraft

- Registration: [N3456C](https://openairdocs.org/deregistered/N3456C-1975-08-11), registration cancelled 1975-08-11, S/N 26499 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Issaquah

## 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 19750529017329A](https://openairdocs.org/incident/19750529017329A), May 29, 1975: Cessna 170A, Issaquah, WA, Destroyed, 3 fatal. Circling top of mtn. OBS waving to pers on grnd.

## Other investigations on N3456C (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA75DYE35](https://openairdocs.org/ntsb/SEA75DYE35), Mar 5, 1975: Cessna 170B (N3456C), Issaquah, WA, substantial damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; 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.