N407JR
Registered owner: INTERNATIONAL AIR SERVICES INC TRUSTEE, NV (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, 1998-07-01 – 2002-08-28.
Part: BEARING — SEPARATED (MAIN ROTOR)
ELASTOMERIC PORTION OF BEARING COMPLETELY DEBONDED FROM BASE. FOUND AT ROUTINE INSPECTION. BEARING IS ONE OF A BATCH OF DEFECTIVE BEARINGS MANUFACTURED BEFORE 1998. RECOMMEND THAT BEARINGS BE BONDED WITH BETTER MATERIALS OR ADHESIVE.
Part: SKIN — CRACKED (HORZONTAL STAB)
WHILE COMPLYING WITH DAILY AIRCRAFT INSPECTION, FOUND A CRACK ON TAILBOOM, LEFT SIDE AT HORIZONTAL STABILIZER AREA.
Part: BEARING — FAILED (T/R DRIVE SHAFT)
T/ROTOR, D/SHAFT BEARING PN 407340339101 FAILED. RESULTING IN THE LOSS OF BALL BEARINGS, SEALS AND GREASE. DAMAGE TO THE FOLLOWING ITEMS WAS CAUSED BY BEARING FAILURE. BEARING WAS INSTALLED IN NR1 POSITION OF TAIL ROTOR HANGER BEARINGS. DAMAGED ITEMS TO FOLLOW: IMPELLER ASSY, FER OIL COOLER BLOWER, HOUSING, COVER , HANGER SUPPORT, BOTH BEARINGS, BOTH ADAPTERS ON FWD AND AFT END OF SHAFT.IMPROVEMENTS NEED TO BE MADE IN BEARING DURABILITY AND ABILITY TO RETAIN GREASE FROM BEING FORCED OUT BY SUCTION CAUSED FROM IMPELLER ROTATION.
Part: BEARING — ROUGH (TAIL ROTOR)
TAIL ROTOR HANGER BEARINGS, P/N 407-340-339-103, HAVE BEEN FOUND ROUGH AND FAILED PREMATURELY ON MANY OCCASIONS DURING INSPECTIONS. THE GREASE USED TO LUBRICATE THESE BEARINGS IS BEING FORCED OUT BY SUCTION CREATED BY THE OIL COOLERS ROTATING IMPELLER (FAN). SUBMITTER SUGGESTED THE MFG OF THESE BEARINGS DEVELOP A HIGHER QUALITY OF SEAL MORE DURABLE TO RETAIN GREASE IN BEARING. (X)
Part: SWASHPLATE — DAMAGED (MAIN ROTOR)
SWASHPLATE SEAL, PN 406-310-407-101, WORE GROOVE IN CAP, P/N 406-010-418-101, CAUSING GREASE FROM BEARINGS BELOW TO ENTER TOP OF SWASHPLATE OUTER EDGE UNDER BOOT. THIS CAN ALLOW GREASE TO CONTAMINATE TEFLON LINED RACES OF UNIBALL ASSEMBLY RESULTING IN CHANGES OF SWASHPLATE FRICTION SETTING WHICH CAUSES STIFFNESS IN CYCLIC AND COLLECTIVE CONTROL INPUTS. SUBMITTER RECOMMENDED CAP BE MADE OF TOUGHER MATERIAL TO PREVENT DAMAGE FROM SEAL, P/N 406-310-407-101.
Part: SCROLL — DAMAGED (COMPRESSOR)
ENGINE REMOVED DUE TO F.O.D., LOUD NOISE. SCROLL HAS INDICATIONS IN WELDS OF TURNING VANES.
Part: BOLT — WORN (ROTOR BRAKE)
BOLTS HAVE STEPS (GROOVES) WORN IN THEM. THIS CAUSES THE PAD ASSY TO STICK. BOLTS ARE USED AS GUIDE PINS.
Part: BRAKE PAD — WORN (ROTOR BRAKE)
HOLES FOR BOLTS THAT GUIDE PAD AND HOLD IN PLACE ARE ELONGATED. ONCE BEFORE THE SAME P/N PAD CAME LOOSE DUE TO HOLE OPENING UP. SUBMITTER SUGGESTED BASE OR METAL BE MADE OF THICKER MATERIAL AROUND GUIDE PIN HOLES.
Part: LINK ASSY — FAILED (M/R DRIVE)
DRIVE LINK LOWER STUD SHEARED DUE TO CRACK/CORROSION. REMOVED DRIVE LINK P/N 406-010-426-101, S/N A-FS1399. INSTALLED S/N A-FS1777 TTO NEW DRIVE LINK.