# NTSB DIA69A0061: Lockheed 18, N221P, Gaithersburg, MD, May 2, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 2, 1969
- Place: Gaithersburg, MD · GAITHERSBURG, MD
- Location: 39.1486° N, 77.1951° W: Placed by OpenAirDocs: center of Gaithersburg, MD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.1486&lon=-77.1951&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Brief approved by the director
- NTSB case key (mKey): 183009
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DIA69A0061
- Page: https://openairdocs.org/ntsb/DIA69A0061

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1268   69/5/2    GAITHERSBURG,MD     LOCKHEED 18         CR-  0  0  2  MISCELLANEOUS             COMMERCIAL, AGE 39, 1223
        TIME - 1421                    N221P               PX-  0  0  0  FERRY                     TOTAL HOURS, 27 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MONTGOMERY COUNTY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAKEOFF: RUN
           GEAR COLLAPSED                                           TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
         FIRE AFTER IMPACT
```

## Aircraft

- Registration: [N221P](https://openairdocs.org/deregistered/N221P-1970-06-29), registration cancelled 1970-06-29, S/N 2062 (OpenAirDocs)
- Reported make and model: LOCKHEED 18
- Registry model: [Lockheed 18-08](https://openairdocs.org/model/lockheed-18-08) (registry code 5261634) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Montgomery County

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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