NTSB Identification: FTW92LA110.
The docket is stored on NTSB microfiche number 46518.
Accident occurred Friday, April 03, 1992 in DENVER, CO
Probable Cause Approval Date: 07/23/1993
Aircraft: PIPER PA-23-250, registration: N6460Y
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.
A CFI WAS INSTRUCTING AN INSTRUMENT RATED COMMERCIAL PILOT. DURING A PRACTICE MISSED APPROACH, THE LANDING GEAR FAILED TO RETRACT. THE CREW ATTEMPTED TO LOWER THE LANDING GEAR USING ALL AVAILABLE EMERGENCY PROCEDURES. A FLY-BY THE TOWER REVEALED THAT THE MAIN GEARS WERE DOWN WHILE THE NOSE LANDING GEAR WAS IN TRANSIT. DURING LANDING ROLLOUT, THE NOSE GEAR COLLAPSED AS SOON AS IT MADE CONTACT WITH THE RUNWAY. THE GEAR MALFUNCTION WAS THE RESULT OF A RUPTURED HYDRAULIC FLUID LINE. THE DEPLETION OF THE HYDRAULIC FLUID RENDERED THE LANDING GEAR SYSTEM INOPERABLE.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE LOSS OF HYDRAULIC FLUID DUE TO A RUPTURED HYDRAULIC LINE IN THE LANDING GEAR SYSTEM.
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