# NTSB MKC74IK064: Boeing 747, N93117, Los Angeles, CA, May 4, 1974

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: May 4, 1974
- Place: Los Angeles, CA · LOS ANGELES, CA
- Location: 34.0522° N, 118.2437° W: Placed by OpenAirDocs: center of Los Angeles, CA, within about 12 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.0522&lon=-118.2437&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 197 uninjured
- Status: Completed, report June 28, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 170211
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC74IK064
- Page: https://openairdocs.org/ntsb/MKC74IK064

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0009   74/5/4  NR.LOS ANGELES,CALIF  BOEING 747          CR-  0  0 15  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1305                    N93117              PX-  0  0182                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - TRANS WORLD AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
         LOS ANGELES,CALIF            NEW YORK,NY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - COOLING SYSTEM: COWLING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- #2 ENG FAN COWLING SEPD,HIT L HORZ STAB.MODIFICATION ORDER NOT COMPLETED.LNDD MCI OK.
```

## Aircraft

- Registration: [N93117](https://openairdocs.org/deregistered/N93117-1998-04-28), registration cancelled 1998-04-28, S/N 20322 (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 N93117 (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 NYC71AN128](https://openairdocs.org/ntsb/NYC71AN128), Jun 29, 1971: Boeing 747 (N93117), Paris, France, 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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