# NTSB NYC75IN055: Douglas DC-10, N120AA, Brownsville, TX, October 3, 1974

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: October 3, 1974
- Place: Brownsville, TX · BROWNSVILLE, TX
- Location: 25.9017° N, 97.4975° W: Placed by OpenAirDocs: center of Brownsville, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.9017&lon=-97.4975&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 65 uninjured
- Status: Completed, report March 7, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 146424
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC75IN055
- Page: https://openairdocs.org/ntsb/NYC75IN055

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0027   74/10/3 NR.BROWNSVILLE,TEX    DOUGLAS DC-10       CR-  0  0 12  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 1910                    N120AA              PX-  0  0 53                            55, 21000 TOTAL HOURS,
                                       DAMAGE-NONE         OT-  0  0  0                            1400 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        OPERATOR - AMERICAN AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          DALLAS,TEX                  ACAPULCO,MEX                 MEXICO CITY,MEX
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: DESCENDING
        PROBABLE CAUSE(S)
           PERSONNEL - FLIGHT ENGINEER: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           SYSTEMS - AIR CONDITION,HEATING AND PRESSURIZATION: OTHER
           SYSTEMS - OXYGEN SYSTEM: PASSENGER SYSTEM
        REMARKS- #3 PNEUMATIC SYS INOP.UN TO MNTN CABIN ALT.BYPASSED RAPID-DECOMP CK LIST.CABIN ALT INC TO 25000FT.
```

## Aircraft

- Registration: [N120AA](https://openairdocs.org/deregistered/N120AA-2002-06-10), registration cancelled 2002-06-10, S/N 46520, built 1972 (OpenAirDocs)
- Reported make and model: DOUGLAS DC-10
- Registry model: [Mcdonnell Douglas DC-10-10](https://openairdocs.org/model/mcdonnell-douglas-dc-10-10) (registry code 3022110) (OpenAirDocs)
- Registry engine: [GE CF6-6 series](https://openairdocs.org/engine/ge-cf6-6-series) (registry code 30020, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: 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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