# NTSB OAK67F0026: Piper PA-22, N5536Z, Sonoma, CA, June 11, 1966

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: June 11, 1966
- Place: Sonoma, CA · SONOMA, CA
- Location: 38.2903° N, 122.4598° W: Placed by OpenAirDocs: center of Sonoma, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2903&lon=-122.4598&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report August 11, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 171346
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK67F0026
- Page: https://openairdocs.org/ntsb/OAK67F0026

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1502  66/6/11    SONOMA CALIF        PIPER PA-22         CR-  0  0  1  NONCOMMERCIAL             STUDENT, AGE 31, 17 TOTAL
        TIME - 1300                    N5536Z              PX-  0  0  0  PRACTICE                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - SONOMA VALLEY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: TRAFFIC PATTERN-CIRCLING
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FELT MATERIAL USED AS GASKET BETWEEN AIRFILTER AND AIRSCOOP CAME LOOSE AND BLOCKED AIR INTAKE.
```

## Aircraft

- Registration: [N5536Z](https://openairdocs.org/deregistered/N5536Z-2018-01-25), registration cancelled 2018-01-25, S/N 22-9326, built 1962 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22-108](https://openairdocs.org/model/piper-pa-22-108) (registry code 7102204) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sonoma Valley

## Other investigations on N5536Z (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 OAK69D0020](https://openairdocs.org/ntsb/OAK69D0020), Jun 18, 1968: Piper PA-22 (N5536Z), Ookala, HI, substantial damage

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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