# NTSB LAX76IL023: Lockheed 1011, N31013, Philadelphia, PA, October 2, 1975

- Type: NTSB incident investigation
- Classification: Incident · Serious injuries · Closed
- Date: October 2, 1975
- 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: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 109 uninjured
- Status: Completed, report December 23, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 151319
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX76IL023
- Page: https://openairdocs.org/ntsb/LAX76IL023

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0017   75/10/2 NR.PHILADELPHIA,PA    LOCKHEED 1011       CR-  0  1 11  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1837                    N31013              PX-  0  0 98                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-NONE         OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - TRANS WORLD AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
         PHILADELPHIA,PA              LOS ANGELES,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INCAPACITATION
        REMARKS- PLT HAD DIABETES MELLITUS HYPOGLYCEMIC EPISODE. CO-PLT LNDD ACFT OK.
```

## Aircraft

- Registration: [N31013](https://openairdocs.org/deregistered/N31013-2013-06-27), registration cancelled 2013-06-27, S/N 193B-1035, built 1973 (OpenAirDocs)
- Reported make and model: LOCKHEED 1011
- Registry model: [Lockheed L-1011-385-1](https://openairdocs.org/model/lockheed-l-1011-385-1) (registry code 5265010) (OpenAirDocs)
- Registry engine: [Rolls-Royce RB-211-22 series](https://openairdocs.org/engine/rolls-royce-rb-211-22-series) (registry code 54554, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: No damage

## Other investigations on N31013 (4)

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 LAX90IA101](https://openairdocs.org/ntsb/LAX90IA101), Feb 19, 1990: Lockheed L-1011-385-1 (N31013), Los Angeles, CA, incident, minor damage. Probable cause: THE FAILURE OF THE WELD HOLDING THE SLIP JOINT TO THE PNEUMATIC DUAL COMPENSATOR FROM THE NO. 2 ENGINE.
- [NTSB MKC85IA131](https://openairdocs.org/ntsb/MKC85IA131), Jun 11, 1985: Lockheed L-1011 (N31013), St. Louis, MO, incident, minor damage
- [NTSB MKC83IA115](https://openairdocs.org/ntsb/MKC83IA115), May 25, 1983: Lockheed L-1011-385-1 (N31013), St. Louis, MO, incident, minor damage
- [NTSB MKC76AK058](https://openairdocs.org/ntsb/MKC76AK058), Jun 1, 1976: Lockheed L-1011 (N31013), Salina, KS, substantial 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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