# NTSB DCA71IZ002: Boeing 747, N743PA, San Francisco, CA, September 18, 1970

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: September 18, 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: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 132 uninjured
- Status: Completed, report October 7, 1971
- Safety recommendations: Yes
- NTSB case key (mKey): 79491
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA71IZ002
- Board report AAR7107 (PDF): https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR7107.pdf
- Page: https://openairdocs.org/ntsb/DCA71IZ002

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0045  70/9/18    SAN FRANCISCO,CAL   BOEING 747          CR-  0  0 15  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 0851                    N743PA              PX-  0  0117                            UNK/NR, 32850 TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, 198 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - SAN FRANCISCO INT
        OPERATOR - AMERICAN AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          SAN FRANCISCO,CAL           JAMAICA,NY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           FIRE OR EXPLOSION: IN FLIGHT                             TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           POWERPLANT - TURBINE ASSEMBLY: BLADE,TURBINE WHEEL
          PWR PLT-STRESS RUPTURE OF 1ST STAGE TURBINE BLADES
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE TEMPERATURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- FAILURE IN NR 1 ENG HI PRES TURBINE MODULE.
```

## Aircraft

- Registration: N743PA (not matched to a registry record)
- Reported make and model: BOEING 747
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: San Francisco Int

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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