# NTSB MIA71IM099: Boeing 747, N604US, Miami, FL, May 20, 1971

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: May 20, 1971
- Place: Miami, FL · MIAMI, FL
- Location: 25.7743° N, 80.1937° W: Placed by OpenAirDocs: center of Miami, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.7743&lon=-80.1937&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 69 uninjured
- Status: Completed, report February 15, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 162235
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA71IM099
- Page: https://openairdocs.org/ntsb/MIA71IM099

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0009  71/5/20    MIAMI,FLA           BOEING 747          CR-  0  0 11  SCHED DOM PASSG SRV       CERTIFICATE UNKNOWN, AGE
        TIME - 1445                    N604US              PX-  0  0 58                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-NONE         OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   UNK/NR INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - MIAMI INTL ARPT
        OPERATOR - NORTHWEST AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          ST PAUL,MINN                MIAMI,FLA                    CHICAGO,ILL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            LANDING: ROLL
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           AIRFRAME - FUSELAGE: DOORS,DOOR FRAMES
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER ALIGNMENT/ADJUSTMENT
        REMARKS- LEFT SIDE NR4 DOOR OPENED,EMERG CHUTE DEPLOYED.RIGGING OF DOOR MARGINAL.
```

## Aircraft

- Registration: [N604US](https://openairdocs.org/deregistered/N604US-1994-08-02), registration cancelled 1994-08-02, S/N 19781 (OpenAirDocs)
- Reported make and model: BOEING 747
- Registry model: [Boeing 747-151](https://openairdocs.org/model/boeing-747-151) (registry code 1384891) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: No damage
- Airport: Miami Intl Arpt

## Other investigations on N604US (2)

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 SEA91IA219](https://openairdocs.org/ntsb/SEA91IA219), Aug 22, 1991: Boeing 747-151 (N604US), Seattle, WA, incident, minor damage. Probable cause: A FIRE IN THE NUMBER 4 ENGINE, RESULTING FROM A FUEL LEAK AT THE MAIN FUEL CONTROL UNIT, DUE TO IMPROPER MAINTENANCE BY UNKNOWN/UNDETERMINED PERSON. THE L5 EMERGENCY EXIT FAILED TO OPERATEE DUE TO A…
- [NTSB NYC75AN065](https://openairdocs.org/ntsb/NYC75AN065), Nov 21, 1974: Boeing 747 (N604US), Jamaica, NY, minor 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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