# NTSB FTW76AF001: Beech C-45H, N9911Z, Tulsa, OK, July 2, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: July 2, 1975
- Place: Tulsa, OK · TULSA, OK
- Location: 36.1540° N, 95.9928° W: Placed by OpenAirDocs: center of Tulsa, OK, within about 8 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.1540&lon=-95.9928&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report August 19, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149441
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW76AF001
- Page: https://openairdocs.org/ntsb/FTW76AF001

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1925   75/7/2    TULSA,OK            BEECH C-45H         CR-  2  0  0  COMMERCIAL                COMMERCIAL, AGE 24, 2609
        TIME - 0004                    N9911Z              PX-  0  0  0  COMMUTER AIR CARRIER      TOTAL HOURS, 1345 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0  AIR TAXI-CARGO S-D        TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - TULSA INTL
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          LAWTON,OK                   KANSAS CITY,MO               TULSA,OK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: WIRES/POLES                               LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: DEFICIENCY,COMPANY MAINTAINED EQPMT,SERVICES,REGULATION
           POWERPLANT - ENGINE STRUCTURE: MASTER AND CONNECTING RODS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           POWERPLANT - PROPELLER AND ACCESSORIES: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - OBSTRUCTED
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         FIRE AFTER IMPACT
        REMARKS- L ENG FAILED PROP UN FEATH DUE CONGEALED OIL.UN MAINTAIN ALT,HIT WIRES.POOR MAINT KNOWN BY PLT,OPS
```

## Aircraft

- Registration: [N9911Z](https://openairdocs.org/deregistered/N9911Z-1975-09-15), registration cancelled 1975-09-15, S/N AF-476 (OpenAirDocs)
- Reported make and model: BEECH C-45H
- Registry model: [Beech C-45H](https://openairdocs.org/model/beech-c-45h) (registry code 1151018) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Tulsa Intl

## FAA reports on this event (1)

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

- [Accident 19750702023339A](https://openairdocs.org/incident/19750702023339A), Jul 2, 1975: Beech C45H, Tulsa, OK, Destroyed. L eng failed prop un feath due congealed oil. Un maintain alt,hit wires. Poor maint known by plt,ops

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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