# NTSB NYC77FA099: Cessna 402B, N69338, Mercer, PA, September 29, 1977

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 29, 1977
- Place: Mercer, PA · MERCER, PA
- Location: 41.2265° N, 80.2363° W: Placed by OpenAirDocs: center of Mercer, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.2265&lon=-80.2363&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report March 10, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 144290
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC77FA099
- Page: https://openairdocs.org/ntsb/NYC77FA099

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4157  77/9/29    MERCER,PA           CESSNA 402B         CR-  2  0  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0758                    N69338              PX-  0  0  0  AIR TAXI-CARGO            AGE 25, 4789 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            454 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BUFFALO,NY                  BEAVER FALLS,PA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           FIRE OR EXPLOSION: IN FLIGHT                             IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
           POWERPLANT - EXHAUST SYSTEM: MANIFOLDS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           POWERPLANT - FUEL SYSTEM: LINES AND FITTINGS
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE TEMPERATURE
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN WING
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- MANIFOLD COUPLE P/N085072-39 3IN CRACK PERMITD EXH GAS INTO WING ONTO LEAKING FUEL VALVE.
```

## Aircraft

- Registration: [N69338](https://openairdocs.org/deregistered/N69338-1980-08-04), registration cancelled 1980-08-04, S/N 402B0447 (OpenAirDocs)
- Reported make and model: CESSNA 402B
- Registry model: [Cessna 402B](https://openairdocs.org/model/cessna-402b) (registry code 207590P) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19770929040979A](https://openairdocs.org/incident/19770929040979A), Sep 29, 1977: Cessna 402B, Mercer, PA, Destroyed. Manifold couple P/N085072-39 3IN crack permitd exh gas into wing onto leaking fuel valve.

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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