# NTSB SEA70AS032: Aeronca 7AC, Snohomish, WA, February 8, 1970

- Type: NTSB accident investigation
- Date: February 8, 1970
- Place: Snohomish, WA · SNOHOMISH, WA
- Location: 47.9289° N, 122.0927° W: Placed by OpenAirDocs: center of Snohomish, WA, within about 6 miles (OpenAirDocs)
- Highest injury: Fatal
- Injuries: 1 fatal, 2 uninjured
- Status: Completed
- Report: DirectorBrief, March 17, 1970
- NTSB case key (mKey): 138661
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA70AS032
- Page: https://openairdocs.org/ntsb/SEA70AS032

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0030   70/2/8    SNOHOMISH,WASH      AERONCA 7FC         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 41, 314
        TIME - 1155                    N9057B              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 5 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  2                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HARVEY
        DEPARTURE POINT             INTENDED DESTINATION
          SEATTLE,WASH               UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - RADAR SERVICE NOT AVAILABLE
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   CONVERGENCE ANGLE-DEGREES -  22
          HORIZONTAL COLLISION ANGLE-DEGREES -   135               EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - NOT INSTALLED
        REMARKS- N9057B BELIEVED TO HAVE BEEN ON 45 DEG ENTRY FOR L HAND PATTERN. SPUN INTO SWAMP.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0030   70/2/8    SNOHOMISH,WASH      AERONCA 7AC         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1155                    N83800              PX-  0  0  0  DUAL                      AGE 20, 889 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  1  0  0                            440 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - HARVEY
        DEPARTURE POINT             INTENDED DESTINATION
          EVERETT,WASH                SNOHOMISH,WASH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - RADAR SERVICE NOT AVAILABLE
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   CONVERGENCE ANGLE-DEGREES -  22
          HORIZONTAL COLLISION ANGLE-DEGREES -   135               EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - NOT INSTALLED
        REMARKS- N83800 ON DOWNWIND FOR R HAND PATTERN TO RWY 14. R HAND PATTERN WAS IN EFFECT.WIND CALM.LANDED OK.
```

## Sequence of events

- Approach, aircraft 1
- Enroute-change of cruise level, aircraft 2

## Aircraft 1

- Registration: N83800, registered now (https://openairdocs.org/aircraft/N83800) (OpenAirDocs)
- Reported make and model: AERONCA 7AC
- Registry model: Aeronca 7AC (registry code 2110102, https://openairdocs.org/model/aeronca-7ac) (OpenAirDocs)
- Registry engine: Continental A&C65 series (registry code 17003, https://openairdocs.org/engine/continental-a-c65-series) (OpenAirDocs)
- Category: Airplane
- Damage: Substantial damage
- Airport: HARVEY

## Aircraft 2

- Registration: N9057B, a cancelled registration (https://openairdocs.org/deregistered/N9057B-1970-04-22) (OpenAirDocs)
- Reported make and model: AERONCA 7FC
- Registry model: Aeronca 7FC (registry code 2110124, https://openairdocs.org/model/aeronca-7fc) (OpenAirDocs)
- Category: Airplane
- Damage: Destroyed
- Airport: HARVEY

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.

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From OpenAirDocs.org, an independent open copy of NTSB and FAA data. The NTSB's own report is the official record of an investigation.