# NTSB MIA72AM044: Lockheed 749A, N6021C, No.Atlantic Ocean (Atlantic Ocean), November 17, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 17, 1971
- Place: No.Atlantic Ocean (Atlantic Ocean) · NO.ATLANTIC OCEAN, AO
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report April 27, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164457
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA72AM044
- Page: https://openairdocs.org/ntsb/MIA72AM044

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3533  71/11/17   NO.ATLANTIC OCEAN   LOCKHEED 749A       CR-  0  0  3  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - UNK/NR                  N6021C              PX-  0  0  0  CORP/EXEC                 62, 19700 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2790 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SAN JUAN,PR                 MIAMI,FLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: RUDDER SURFACES,ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - DETERIORATED
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- SECTION OF RUDDER FORMER AND FABRIC SEPARATED IN FLT.
```

## Aircraft

- Registration: [N6021C](https://openairdocs.org/deregistered/N6021C-1983-07-11), registration cancelled 1983-07-11, S/N 2667 (OpenAirDocs)
- Reported make and model: LOCKHEED 749A
- Registry model: [Lockheed 749A-79](https://openairdocs.org/model/lockheed-749a-79) (registry code 5262008) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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