# NTSB IAD75FIG20: Fleet 7, N9433, Gaithersburg, MD, May 11, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 11, 1975
- 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: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 9, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148992
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD75FIG20
- Page: https://openairdocs.org/ntsb/IAD75FIG20

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1183  75/5/11    GAITHERSBURG,MD     FLEET 7             CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 48, 650
        TIME - 1630                    N9433               PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 101 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - MONTGOMERY CO
        DEPARTURE POINT             INTENDED DESTINATION
          GAITHERSBURG,MD             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
           PILOT IN COMMAND - FAILED TO INITIATE GO-AROUND
        FACTOR(S)
           AIRFRAME - LANDING GEAR: TAILWHEEL ASSEMBLIES
           WEATHER - UNFAVORABLE WIND CONDITIONS
        WEATHER BRIEFING - UNKNOWN/NOT REPORTED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     RIGHT CROSS WIND 068-112 DEGREES
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          190                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- PLT APLD BRAKES ABRUPTLY.TAIL WHEEL ASSEMBLY,3 THRUST PLATE TO CASTERING AXIS DOWL PINS SHEARED.
```

## Aircraft

- Registration: [N9433](https://openairdocs.org/aircraft/N9433), registered now, S/N 81 (OpenAirDocs)
- Reported make and model: FLEET 7
- Registry model: [Fleet 7](https://openairdocs.org/model/fleet-7) (registry code 1461502) (OpenAirDocs)
- Registry engine: [Kinner B5 series](https://openairdocs.org/engine/kinner-b5-series) (registry code 37501, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Montgomery Co

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750511013429A](https://openairdocs.org/incident/19750511013429A), May 11, 1975: Brwstr FLEET7, Gaithersburg, MD, Substantial damage. Plt apld brakes abruptly. Tail wheel assembly,3 thrust plate to castering axis dowl pins sheared.

## Other investigations on N9433 (2)

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.

- [NTSB ERA13LA418](https://openairdocs.org/ntsb/ERA13LA418), Sep 7, 2013: Fleet 7 (N9433), Louisa, VA, substantial damage. Probable cause: Maintenance personnel’s improper service, adjustment, and inspection of the brakes, which resulted in a runway excursion and subsequent noseover.
- [NTSB IAD74FIG02](https://openairdocs.org/ntsb/IAD74FIG02), Jul 14, 1973: Brewster FLEET7 (N9433), Gaithersburg, MD, substantial damage

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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