# NTSB NYC74IN093: Boeing 707, N778TW, Philadelphia, PA, May 8, 1974

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: May 8, 1974
- Place: Philadelphia, PA · PHILADELPHIA, PA
- Location: 39.9523° N, 75.1638° W: Placed by OpenAirDocs: center of Philadelphia, PA, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9523&lon=-75.1638&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 158 uninjured
- Status: Completed, report June 25, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 170210
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC74IN093
- Page: https://openairdocs.org/ntsb/NYC74IN093

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0008   74/5/8    PHILADELPHIA,PA     BOEING 707          CR-  0  0  9  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 2010                    N778TW              PX-  0  0149                            UNK/NR, 26500 TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - PHILADELPHIA INTL
        OPERATOR - TRANS WORLD AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          PITTSBURGH,PA               LONDON,ENGLAND               PHILADELPHIA,PA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: RUN
        PROBABLE CAUSE(S)
           POWERPLANT - COMPRESSOR ASSEMBLY: BLADE,COMPRESSOR ROTOR
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        REMARKS- 16TH STAGE COMPRESSOR FAILED.
```

## Aircraft

- Registration: [N778TW](https://openairdocs.org/deregistered/N778TW-1984-05-29), registration cancelled 1984-05-29, S/N 18409 (OpenAirDocs)
- Reported make and model: BOEING 707
- Registry model: [Boeing 707-331B](https://openairdocs.org/model/boeing-707-331b) (registry code 138366H) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Philadelphia Intl

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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