# NTSB MIA76AM023: Boeing 747, N9655A, San Juan, PR, September 8, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: September 8, 1975
- Place: San Juan, PR · SAN JUAN, PR
- Location: 18.4663° N, 66.1057° W: Placed by OpenAirDocs: center of San Juan, PR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=18.4663&lon=-66.1057&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 170 uninjured
- Status: Completed, report November 14, 1975
- Report: Brief approved by the director
- Safety recommendations: Yes
- NTSB case key (mKey): 79507
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA76AM023
- Page: https://openairdocs.org/ntsb/MIA76AM023

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0026   75/9/8    SAN JUAN,PR         BOEING 747          CR-  0  0 14  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 1055                    N9655A              PX-  0  0157                            58, 14926 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2800 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - PUERTO RICO INTL
        OPERATOR - AMERICAN AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          NEW YORK,NY                 SAN JUAN,PR
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           AIRFRAME - FLIGHT CONTROL SURFACES: FLAP ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- L INBD TRAIL EDGE FOREFLAP SEPD.ROLLER BEARINGS SEIZED.CORRECTIVE AD ISSUED.
```

## Aircraft

- Registration: N9655A (not matched to a registry record)
- Reported make and model: BOEING 747
- Category: Airplane
- Engines: turbo fan
- Damage: Substantial damage
- Airport: Puerto Rico 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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