# NTSB FTW71FPJ23: Cessna 150, N8435J, Okla.City, OK, December 12, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: December 12, 1970
- Place: Okla.City, OK · OKLA.CITY, OK
- Location: 35.4676° N, 97.5164° W: Placed by OpenAirDocs: center of Oklahoma City, OK, within about 14 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.4676&lon=-97.5164&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report March 12, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159359
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW71FPJ23
- Page: https://openairdocs.org/ntsb/FTW71FPJ23

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2350  70/12/12   OKLA.CITY,OKLA      CESSNA 150          CR-  0  2  0  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1748                    N8435J              PX-  0  0  0  DUAL                      AGE 23, 253 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            33 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - DOWNTOWN AIRPARK
        DEPARTURE POINT             INTENDED DESTINATION
          OKLA.CITY,OKLA              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: TRAFFIC PATTERN-CIRCLING
           COLLIDED WITH: OBJECT                                    LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - FUEL SYSTEM: VENTS,DRAINS,TANK CAPS
           MISCELLANEOUS ACTS,CONDITIONS - OBSTRUCTED
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER/INADEQUATE VENTING
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        FACTOR(S)
           TERRAIN - OTHER
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FUEL VENT LINE CLOGGED WITH DIRT AND HARDENED GLASS SUBSTANCE. HIT GRAVEL PILE IN INDUSTRIAL AREA.
```

## Aircraft

- Registration: [N8435J](https://openairdocs.org/deregistered/N8435J-1975-06-10), registration cancelled 1975-06-10, S/N 15066335 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (registry code 2071816) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Downtown Airpark

## Other investigations on N8435J (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 FTW71DPJ06](https://openairdocs.org/ntsb/FTW71DPJ06), Jul 5, 1970: Cessna 150 (N8435J), Duncan, OK, 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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