# NTSB MIA71IM008: Boeing 727, N4730, Jacksonville, FL, July 22, 1970

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: July 22, 1970
- Place: Jacksonville, FL · JACKSONVILLE, FL
- Location: 30.3322° N, 81.6557° W: Placed by OpenAirDocs: center of Jacksonville, FL, within about 15 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=30.3322&lon=-81.6557&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 115 uninjured
- Status: Completed, report February 11, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 108052
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA71IM008
- Page: https://openairdocs.org/ntsb/MIA71IM008

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0050  70/7/22    JACKSONVILLE,FLA    BOEING 727          CR-  0  0  7  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1755                    N4730               PX-  0  0108                            49, 12453 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            1389 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - IMESON
        OPERATOR - NATIONAL AIRLINES,INC
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          BOSTON,MASS                 TAMPA,FLA                    JACKSONVILLE,FLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              UNKNOWN/NOT REPORTED
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: FLAP ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER ALIGNMENT/ADJUSTMENT
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
                                  AIRFRAME BUFFET
        REMARKS- L OUTBD FORE FLAP FAILED AT UNDET TIME. MISRIGGED. PLT LND OK.
```

## Aircraft

- Registration: [N4730](https://openairdocs.org/deregistered/N4730-1994-07-14), registration cancelled 1994-07-14, S/N 19450 (OpenAirDocs)
- Reported make and model: BOEING 727
- Registry model: [Boeing 727-235](https://openairdocs.org/model/boeing-727-235) (registry code 138408B) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Imeson

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.