# NTSB OAK71IP012: Boeing 747, N93108, San Francisco, CA, August 26, 1970

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: August 26, 1970
- Place: San Francisco, CA · SAN FRANCISCO, CA
- Location: 37.7750° N, 122.4194° W: Placed by OpenAirDocs: center of San Francisco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7750&lon=-122.4194&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 200 uninjured
- Status: Completed, report February 17, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 108063
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK71IP012
- Page: https://openairdocs.org/ntsb/OAK71IP012

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0051  70/8/26    SAN FRANCISCO,CAL   BOEING 747          CR-  0  0 18  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 0855                    N93108              PX-  0  0182                            50, 21000 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            135 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - TRANS WORLD AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          SAN FRANCISCO,CAL           JAMAICA,NY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           FIRE OR EXPLOSION: IN FLIGHT                             IN FLIGHT: DESCENDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: COMPRESSOR STALLS
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           POWERPLANT - MISCELLANEOUS: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-2 ENGINES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- NR 2 ENG QUIT,MACHINE BOLT FAILED.NR 4 ENG IGNITED,OIL SPRAYED ACCESS SECTION.LOOSE COVER PLATE.
```

## Aircraft

- Registration: [N93108](https://openairdocs.org/deregistered/N93108-2000-06-27), registration cancelled 2000-06-27, S/N 19674 (OpenAirDocs)
- Reported make and model: BOEING 747
- Registry model: [Boeing 747-131](https://openairdocs.org/model/boeing-747-131) (registry code 1384881) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage

## Other investigations on N93108 (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 NYC70IN127](https://openairdocs.org/ntsb/NYC70IN127), Jun 4, 1970: Boeing 747 (N93108), Jamaica, NY, incident, no 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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