# NTSB OAK76AP063: Beech 36, N7523N, Castro Valley, CA, August 4, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 4, 1976
- Place: Castro Valley, CA · CASTRO VALLEY, CA
- Location: 37.7083° N, 122.0628° W: Placed by OpenAirDocs: center of Castro Valley, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7083&lon=-122.0628&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 8, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 155750
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK76AP063
- Page: https://openairdocs.org/ntsb/OAK76AP063

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2948   76/8/4    CASTRO VALLEY,CA    PIPER PA-28         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 46, 500
        TIME - 1807                    N8875J              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 150 IN TYPE,
                                       DAMAGE-MINOR        OT-  0  0  1                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HAYWARD AIR TERM.
        DEPARTURE POINT             INTENDED DESTINATION
          HAYWARD,CA.                 RIO VISTA,CA.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        FACTOR(S)
           PERSONNEL - TRAFFIC CONTROL PERSONNEL: OTHER
         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                                  CONVERGENCE ANGLE-DEGREES -  25
          HORIZONTAL COLLISION ANGLE-DEGREES -   140               EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - OPERATING
        REMARKS- AIR TRFFC CNTRLR FAILED TO ADVISE ALTITUDE OF N7523N TO N8875N.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2948   76/8/4    CASTRO VALLEY,CA     BEECH 36           CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 65, 14860
        TIME - 1907                    N7523N              PX-  0  0  0  BUSINESS                  TOTAL HOURS, 1910 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  2                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - METRO OAKLAND INT
        DEPARTURE POINT             INTENDED DESTINATION
          SAN DIEGO,CA.               OAKLAND,CA.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
        FACTOR(S)
           PERSONNEL - TRAFFIC CONTROL PERSONNEL: OTHER
         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                                  CONVERGENCE ANGLE-DEGREES -  15
          HORIZONTAL COLLISION ANGLE-DEGREES -   140               EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - OPERATING
        REMARKS- AIR TRFFC CNTRLR FAILED TO RELAY ALTITUDE OF N7523N TO N8875J AS PER AGREEMENT.
```

## Aircraft 1

- Registration: [N7523N](https://openairdocs.org/aircraft/N7523N), registered now, S/N E-49, built 1968 (OpenAirDocs)
- Reported make and model: BEECH 36
- Registry model: [Beech 36](https://openairdocs.org/model/beech-36) (registry code 1151602) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Metro Oakland Int

## Aircraft 2

- Registration: [N8875J](https://openairdocs.org/deregistered/N8875J-2013-03-11), registration cancelled 2013-03-11, S/N 28-2839, built 1965 (OpenAirDocs)
- Reported make and model: PIPER PA-28
- Registry model: [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180) (registry code 7102808) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Minor damage
- Airport: Hayward Air Term.

## FAA reports on this event (2)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19760804032422A](https://openairdocs.org/incident/19760804032422A), Aug 4, 1976: Beech 36BEECH, Castro Valley, CA, Substantial damage. Air trffc cntrlr failed to relay altitude of N7523N to N8875J as per agreement.
- [Accident 19760804032421A](https://openairdocs.org/incident/19760804032421A), Aug 4, 1976: Piper PA28180, Castro Valley, CA, Minor damage. Air trffc cntrlr failed to advise altitude of N7523N to N8875N.

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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