# NTSB UNK64X3247: Cessna 170, N4273V, San Jose, CA, August 6, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 6, 1964
- Place: San Jose, CA · SAN JOSE, CA
- Location: 37.3394° N, 121.8950° W: Placed by OpenAirDocs: center of San Jose, CA, within about 8 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.3394&lon=-121.8950&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report November 20, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 184766
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X3247
- Page: https://openairdocs.org/ntsb/UNK64X3247

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0544   64/8/6    SAN JOSE CALIF      CESSNA 150          CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1705                    N4432U              PX-  0  0  0  DUAL                      AGE UNK/NR, 5200 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  2                            HOURS, 1100 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SAN JOSE MUN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - TOWER                               RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - CONTROLLED AIRPORT
          CONTROL ZONE/AREA - YES                                  EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - *ERROR-INVALID CODE*
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0544   64/8/6    SAN JOSE CALIF      CESSNA 170          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 61, UNK/NR
        TIME - 1705                    N4273V              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 599 IN TYPE,
                                       DAMAGE-MINOR        OT-  0  0  2                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SAN JOSE MUN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
          PILOT-INADEQUATE RESPONSE TO TOWER INSTRUCTIONS.
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - TOWER                               RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - BY LOCAL CONTROL               CONTROLLED/UNCONTROLLED AIRPORT - CONTROLLED AIRPORT
          CONTROL ZONE/AREA - YES                                  EVASIVE ACTION TAKEN - YES
          ANTI-COLLISION LIGHTS - *ERROR-INVALID CODE*
```

## Aircraft 1

- Registration: [N4273V](https://openairdocs.org/deregistered/N4273V-2013-11-15), registration cancelled 2013-11-15, S/N 18631, built 1948 (OpenAirDocs)
- Reported make and model: CESSNA 170
- Registry model: [Cessna 170](https://openairdocs.org/model/cessna-170) (registry code 2072302) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Minor damage
- Airport: San Jose Mun

## Aircraft 2

- Registration: [N4432U](https://openairdocs.org/aircraft/N4432U), registered now, S/N 15060432, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150D](https://openairdocs.org/model/cessna-150d) (registry code 2071810) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: San Jose Mun

## Other investigations on N4273V (1)

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.

- [NTSB ERA10CA310](https://openairdocs.org/ntsb/ERA10CA310), Jun 13, 2010: Cessna 170 (N4273V), Campbellsville, KY, substantial damage. Probable cause: The pilot’s failure to maintain directional control during an aborted landing.

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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