# NTSB MIA73AM029: Lockheed 18, N7611, Boca Raton, FL, April 23, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 23, 1973
- Place: Boca Raton, FL · BOCA RATON, FL
- Location: 26.3708° N, 80.1026° W: Placed by OpenAirDocs: center of Boca Raton, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=26.3708&lon=-80.1026&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report June 21, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190705
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA73AM029
- Page: https://openairdocs.org/ntsb/MIA73AM029

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1038  73/4/23    BOCA RATON,FLA      LOCKHEED 18         CR-  0  0  2  NONCOMMERCIAL             COMMERCIAL, AGE 51, 9047
        TIME - 1520                    N7611               PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 67 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - BOCA RATON
        DEPARTURE POINT             INTENDED DESTINATION
          BOCA RATON,FLA              ST.PETERSBURG,FLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAKEOFF: RUN
           GEAR COLLAPSED                                           TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER ALIGNMENT/ADJUSTMENT
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - PRESSURE TOO LOW
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           PILOT IN COMMAND - DELAYED ACTION IN ABORTING TAKEOFF
        FACTOR(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- L PWR BRAKE VALVE SPRING WEAK,CAUSED STICKING.R BRAKE SYSTEM OUT OF ADJUSTMENT,DENIED FULL PRESS.
```

## Aircraft

- Registration: [N7611](https://openairdocs.org/deregistered/N7611-1974-08-09), registration cancelled 1974-08-09, S/N 2550 (OpenAirDocs)
- Reported make and model: LOCKHEED 18
- Registry model: [Lockheed 18](https://openairdocs.org/model/lockheed-18) (registry code 5261602) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Boca Raton

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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