N901K
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
PILOT REPORTED THAT DURING INITIAL CLIMB TO FL190 THE N1, N2 & FUEL FLOW ON THE NR 1 ENG BEGAN TO SURGE UP & DOWN & THEN STABILIZED. THE PILOT ELECTED TO RETURN TO THE DEPARTURE AIRPORT & MADE A NORMAL APPROACH & LANDING. THE ENG RETURNED TO NORMAL OPERATION DURING THE DESCENT. AFTER EXTENSIVE TROUBLESHOOTING DETERMINED THE N2 TRANSDUCER WAS FAULTY. THE SENSOR WAS REPLACED & THE ENG RAN NORMALLY. A TEST FLIGHT WAS MADE TO VERIFY THE CORRECTIVE ACTION.
ON APPROACH, RT MLG DID NOT EXTEND WHEN THE GEAR WAS SELECTED DOWN. ABORTED APPROACH AND USED MANUAL GEAR EXTENSION PROCEDURE AND ALL THREE LANDING GEAR EXTENDED. LANDED WITHOUT FURTHER INCIDENT. MX PERFORMED GEAR SWINGS. RT MAIN GEAR WOULD NOT FULLY EXTEND OR RETRACT USING HAND PUMP. REVERSED VALVE CLEARANCES WERE CHECKED AND FOUND TO BE WITHIN MM LIMITS. CHECKED REVERSING VALVE LINKAGE FOR FREEDOM OF MOVEMENT. LINKAGE FOUND TO BE STIFF AND DIFFICULT TO MOVE DUE TO A BUILD UP OF DIRT AND DEBRIS. BOTH MAIN GEARS WERE CLEANED, DEGREASED AND LUBRICATED. REVERSING VALVE LINKAGE OPERATED AND FOUND TO BE MOVING SMOOTHLY. LINKAGE REASSEMBLED AND GEAR SWINGS WERE PERFORMED USING BOTH HAND PUMP AND HYD MULE WITH NO DEFECTS NOTED. MAIN HYD SUCTION FILTER WAS REPLACED AND THE PRESSURE FILTER WAS CLEANED AND INSPECTED. LANDING GEAR WAS OPS AND LEAK CHECKED WITH NO DEFECTS NOTED. HYD SYSTEM SERVICED, RETURNED TO SERVICE.
RIGHT MAIN GEAR INDICATOR LIGHT DID NOT ILLUMINATE UNTIL GEAR RAISED AND LOWERED TWICE. ON INITIAL EXTENSION RED UNSAFE LIGHT REMAINED ILLUMINATED & NEITHER RT GEAR GREEN LIGHT ILLUMINATED. RECYCLED GEAR WITH SAME RESULT. ATTEMPTED MANUAL PUMP DOWN OF GEAR & FOUND MANUAL PUMP DIFFICULT TO MOVE DUE TO FULL HYDRAULIC PRESSURE IN SYSTEM. RECYCLED GEAR AGAIN & GEAR EXTENDED NORMALLY WITH RED LIGHT EXTINGUISHING AND BOTH RT MAIN GREEN LIGHTS ILLUMINATING. AN UNEVENTFUL LANDING WAS MADE. MX INSPECTED GEAR SYS AND PERFORMED 10 GEAR SWINGS WITH NO MALFUNCTIONS. GEAR LUBRICATED AND INSPECTED, AND 20 MORE GEAR SWINGS WERE PERFORMED WITH NO MALFUNCTIONS. AIRPLANE RETURNED TO SERVICE.
WHEN THE BATTERY WAS BEING REMOVED FROM THE AIRCRAFT THROUGH THE REAR HATCH, THE TECHNICIAN HAD TO TILT THE BATTERY TO GET IT OUT. AT THAT TIME, THE ACID RAN DOWN OVER HIS BODY. THE BATTERY TRAY HAD ACCUMULATION OF ACID. (X)