# NTSB MIA71IM102: Boeing 727, N464US, Miami, FL, May 25, 1971

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: May 25, 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: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 18 uninjured
- Status: Completed, report July 25, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 162239
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA71IM102
- Page: https://openairdocs.org/ntsb/MIA71IM102

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0032  71/5/25    MIAMI,FLA           BOEING 727          CR-  0  0  6  SCHED DOM PASSG SRV       ATP,FLIGHT INSTR., AGE
        TIME - 1000                    N464US              PX-  0  0 12                            31, 5598 TOTAL HOURS,
                                       DAMAGE-NONE         OT-  0  0  0                            1933 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - MIAMI INTL
        OPERATOR - NORTHWEST AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          MIAMI,FLA                   ST.PAUL,MINN                 TAMPA,FLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           SYSTEMS - FLIGHT CONTROL SYSTEMS: FLIGHT CONTROL LOAD FEEL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - BINDING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        REMARKS- ELEV FEEL CTL MALFUNCTION DUE IMPROPER OVERHAUL OF UNIT WITH NON-SKYDROL RESISTANT O RING SEALS.
```

## Aircraft

- Registration: N464US (not matched to a registry record)
- Reported make and model: BOEING 727
- Category: Airplane
- Engines: turbo fan
- Damage: No damage
- Airport: Miami 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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