# NTSB UNK64X2390: Mooney M20D, N1227X, Houston, TX, June 20, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 20, 1964
- Place: Houston, TX · HOUSTON, TX
- Location: 29.7633° N, 95.3633° W: Placed by OpenAirDocs: center of Houston, TX, within about 14 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.7633&lon=-95.3633&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 5, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183428
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2390
- Page: https://openairdocs.org/ntsb/UNK64X2390

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1729  64/6/20    HOUSTON TEX         MOONEY M20D         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 40, 3200
        TIME - 1630                    N1227X              PX-  0  0  0  BUSINESS                  TOTAL HOURS, 250 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - COLLIER
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO EXTEND LANDING GEAR
```

## Aircraft

- Registration: [N1227X](https://openairdocs.org/aircraft/N1227X), registered now, S/N 198, built 1963 (OpenAirDocs)
- Reported make and model: MOONEY M20D
- Registry model: [Mooney M20D](https://openairdocs.org/model/mooney-m20d) (registry code 5870210) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Collier

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.