# NTSB IAD70F0126: Aero Comdr 680-FL, N6302U, Gaithersburg, MD, December 18, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 18, 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: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report August 3, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 147001
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD70F0126
- Page: https://openairdocs.org/ntsb/IAD70F0126

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4713  69/12/18   GAITHERSBURG,MD     AERO COMDR 680-FL   CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 47, 1635
        TIME - 1855                    N6302U              PX-  0  0  5  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 208 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MONTGOMERY COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
          JASPER,ALA                  GAITHERSBURG,MD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - POORLY PLANNED APPROACH
           WEATHER - ICING CONDITIONS-INCLUDES SLEET,FREEZING RAIN,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - WEATHER SLIGHTLY WORSE THAN FORECAST
        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                  TYPE OF WEATHER CONDITIONS
          NONE                                                     VFR
        TYPE OF FLIGHT PLAN
          IFR
        REMARKS- MADE 360 ON FINAL APCH FOR SPACING. LND TO L OF RWY. ENCOUNTERED ICING COND ON FLT.
```

## Aircraft

- Registration: [N6302U](https://openairdocs.org/deregistered/N6302U-2013-04-29), registration cancelled 2013-04-29, S/N 1338-23, built 1963 (OpenAirDocs)
- Reported make and model: AERO COMDR 680-FL
- Registry model: [Aero Commander 680FL](https://openairdocs.org/model/aero-commander-680fl) (registry code 0141608) (OpenAirDocs)
- Registry engine: [Lycoming IGSO-540-B1A](https://openairdocs.org/engine/lycoming-igso-540-b1a) (registry code 41535, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- 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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