NTSB Identification: DEN86LA262.
The docket is stored on NTSB microfiche number 32409.
Accident occurred Monday, September 29, 1986 in BOULDER, CO
Aircraft: BEECH 60, registration: N3694D
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

AT TOUCHDOWN, THE PLT APPLIED BRAKES NORMALLY. HE NOTICED SOFTENING OF THE LEFT BRAKE PEDAL AND THE ACFT TURNED RIGHT LEAVING THE RWY AND INTERSECTING A TAXIWAY AT APRX A 30 DEGREE ANGLE. THE TAXIWAY HAD A SIX INCH RISE AT THE EDGE WHICH CAUSED THE LEFT MAIN GEAR TO COLLAPSE UPON IMPACT. INVESTIGATION REVEALED THAT THE BRAKE FLUID LEAKED OUT DURING FLT BECAUSE OF A COCKED BRAKE PUCK.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,NORMAL BRAKE SYSTEM..FAILURE,PARTIAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

TERRAIN CONDITION..ROUGH/UNEVEN

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PROPER ALIGNMENT..NOT POSSIBLE..PILOT IN COMMAND


Contributing Factors

FLUID,HYDRAULIC..LEAK

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