N403AL
Registered owner: ZIPLINE INTERNATIONAL INC, CA (owner ≠ operator)
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
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
9 reports on file, 2001-08-30 – 2006-01-14.
Part: PUMP — UNSERVICEABLE (HYDRAULIC SYS)
DURING HOVER, HIGH FREQUENCY BUZZ WAS FELT IN TAIL ROTOR PEDALS. REMOVED AND REPLACED HYDRAULIC PUMP WITH SERVICEABLE UNIT. OPERATIONAL CHECK WAS GOOD. (K)
Part: TRANSMISSION — MAKING METAL (MAIN ROTOR)
ON TAKEOFF, TRANSMISSION CHIP LIGHT ILLUMINATED, PILOT RETURNED TO THE PLATFORM. SHUTDOWN AND NOTIFIED MAINTENANCE. REMOVED UPPER CHIP PLUG AND FOUND 3 SMALL SLIVERS. CLEANED THE PLUG, REINSTALLED CHIP PLUG AND PERFORMED A 30 MINUTE PENALTY RUN AND LEAK CHECKED. APPROPRIATE LOG BOOK ENTRIES WERE MADE. AC WAS RETURNED, IAW MAINTENANCE REQUEST. UPON LANDING, THE MECHANIC REMOVED AND REPLACED THE TRANSMISSION AND THE MAST ASSY AND THE AIRCRAFT WAS RETURNED TO SERVICE. (K)
Part: UNIVERSAL — RATCHETING (MAIN ROTOR) · airframe 2,440 hrs
FOUND BEARING ROUGH AND RATCHETY. REPLACED WITH NEW PART.
Part: UNIVERSAL — ROUGH (ROTOR HEAD) · airframe 1,694 hrs
MAIN ROTOR HEAD UNIVERSAL BEARING ROUGH AND RATCHETY. REMOVED IAW 407, MM.
Part: HOUSING — CRACKED (BLOWER) · airframe 1,441 hrs
HOUSING CRACKED. REMOVED AND REPLACED. RETURNING FAILED UNIT.
Part: COVER — STRIPPED (GEARBOX)
(GEARBOX COVER) UPON DISASSEMBLY OF GEARBOX, FOUND 1 EACH STRIPPED STUD AND 2 EACH LOOSE STUDS AT 2.5 BEARING CAGE MATING SURFACE, ALSO FOUND 2 EACH STUDS AT TM SUPPORT JOURNAL LOOSE. NOTE: AT LOCATION OF STRIPPED STUD ON T.5 BEARING CAGE SURFACE, FOUND NO THREADS IN STUD BORE. NOTE: THISCONDITION COULD POSSIBLY CAUSE CATASTROPHIC GEAR FAILURE. URGENT: INSTALL HELICOILS IN STUD BORES AT FACTORY TO ALLOW FOR HIGH TORQUE OF ENGINE IN THIS AREA.
Part: PINION GEAR — WORN (GEARBOX)
UPON DISASSEMBLY OF GEARBOX. UPON DISASSEMBLY OF GEARBOX FOUND EXCESSIVE GALLING AND SPALLING AND WEAR IN GEAR TEETH AND UNEVEN WEAR AND HEAVY SPALLING OF T/M GEAR TEETH. ASSURE PROPER MESHING OF GEAR TEETH.
Part: BEARING — WORN (TAIL ROTOR)
DURING DAILY, GREY/BLACK GREASE EMANATING FROM BEARING. (M)
Part: BEARING — WORN (TAIL ROTOR)
DURING DAILY, GREY/BLACK GREASE EMANATING FROM BEARING. (M)