N627AL

Part: FIRESHIELD — MISMANUFACTURED (ZONE 400)

COULD NOT FIT VERTICAL FIRESHIELD ON ENG GEARBOX. ALL FIRESHIELD MOUNT PADS WELDED OFF CENTER.

Part: CHIP DETECTOR — DIRTY (TRANSMISSION)

UPON TAKEOFF TO HOVER, XMSN CHIP LIGHT ILLUMINATED UPON TAKEOFF TO HOVER. PILOT LANDED AC. MAINTENANCE FOUND LIGHT FUZZ ON LOWER XMSN CHIP PLUG. CLEANED CHIP PLUG, C/W 30 MIN GROUND RUN. NO FURTHER DEFECTS NOTED. (K)

Part: INDICATOR — UNKNOWN (DUAL TAC)

ON PREFLIGHT, FOUND 5 SEPARATE DEBONDED AREAS AND A CRACK IN THE WINDSHIELD. REMOVED AND REPLACED DUAL TAC GAUGE. (K)

Part: PITCH LINK — WORN (MAIN ROTOR) · airframe 7,890 hrs

AXIAL PLAY BEYOND MAX AND ROUGH. REPLACED WITH NEW BY FIELD MAINTENANCE.

Part: PITCH LINK — BINDING (MAIN ROTOR) · airframe 7,823 hrs

ROUGH, BINDING, AXIAL PLAY BEYOND MAX. REPLACED WITH NEW BY FIELD MAINTENANCE.

Part: GAUGE — OVERTORQUED (TORQUE)

DURING TAKEOFF, TORQUE GAUGE OVERTORQUED WITH NO OTHER EXCEDENCES. THE MECHANIC DRIED THE MOISTURE FROM TORQUE TRANSMITTER, COMPLIED WITH GROUND RUN AND AIRCRAFT WAS RETURNED TO SERVICE.

Part: CHIP DETECTOR — CONTAMINATED (TRANSMISSION)

DURING TAKEOFF, TRANSMISSION LIGHT CAME ON FOR 30 SECONDS THEN IT WENT OFF. MAINTENANCE FOUND CARBON PARTICLES ON PLUG, CHANGED FILTER AND OIL GROUND RAN LEAKED CHECK GOOD.

Part: PRESSURE SWITCH — FAILED (FUEL TRANSFER)

UPON TAXING OUT, THE TRANSMISSION CHIP LIGHT ILLUMINATED. THE PILOT RETURNED TO THE PAD AND LANDED AS SOON AS POSSIBLE. ON SHUT DOWN WHILE TURNING OFF FUEL BOOST PUMP CIRCUIT BREAKER SWITCHES, THE LEFT TRANSFER PUMP LIGHT DID NOT ILLUMINATE. THE MECHANIC REMOVED AND REPLACED LT FUEL TRANSFER PRESSURE SWITCH ALSO THE MECHANIC FOUND A SMALL METAL PARTICLE ON LOWER TRANS CHIP PLUG, HE CLEANED THE PLUG, REMOVED AND REPLACED TRANS OIL AND FILTER, COMPLIED WITH PENALTY RUN AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BEARING — WORN (ROTOR HEAD) · airframe 6,409 hrs

FOUND BEARING WORN AND RATCHETING. BEARING REPLACED BY (FIELD) MAINT.

Part: BEARING — WORN (MAIN ROTOR) · airframe 6,409 hrs

FOUND BEARING TO BE WORN AND RATCHETING.

Part: ENGINE — FAILED

DURING CRUISE FLIGHT, ENGINE CHIP LIGHT ILLUMINATED DURING CRUISE FLIGHT. THE PILOT FOLLOWED THE EMERGENCY CHECKLIST AND UPON LANDING THE MECHANIC REMOVED AND REPLACED THE TURBINE AND GEARBOX. AIRCRAFT WAS THEN RETURNED TO SERVICE.

Part: UNIVERSAL — WORN (MAIN ROTOR) · airframe 5,843 hrs

FOUND BEARINGS WORN. BEARING HAS A 5000 HR. RETIREMENT LIFE.

Part: BEARING — WORN (T/R DRIVESHAFT)

DURING PREVENTATIVE MAINTENANCE INSPECTION, BEARINGS ROUGH AND WORN/ BEARINGS SCRAPPED. BEARINGS SHOULD BE MOUNTED IN SELF-CENTERING HOUSING.

Part: DISC PACK — CRACKED (TAIL ROTOR)

DURING 25 HOUR AD INSPECTION, FOUND TAIL ROTOR DRIVESHAFT DISC CRACKED.

Part: DISC PACK — CRACKED (TAIL ROTOR)

DURING 25 HOUR INSPECTION, COUPLING IS CRACKED, PROBABLE CAUSE IS EXCESSIVE RIGIDITY IN THE BEARING MOUNT SYSTEM. ALLOW TAILROTOR DRIVESHAFT TO FLOAT SO DISC PACKS DO NOT FLEX AS MUCH OR AS OFTEN. (M)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,676 hrs

DURING 25-HOUR AD INSPECTION, FOUND AFT SEGMENT IS CRACKED ACROSS THE SPAN IN TWO PLACES 180 DEGREES APART. (X)

Part: BUSHING — CORRODED (SWASHPLATE) · airframe 2,528 hrs

DURING REPAIR FOR WORN BUSHINGS AND SPACERS, EXCESSIVE CORROSION AROUND AND UNDER BUSHINGS, PN 206-010-338-3.

Part: BUSHING — WORN (SWASHPLATE LINK) · airframe 2,258 hrs

DURING REPAIR FOR WORN BUSHINGS AND SPACERS, EXCESSIVE CORROSION AROUND AND UNDER BUSHINGS, P/N 206-010-338-3. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,552 hrs

DURING 25 HOUR AD INSPECTION, FORWARD SEGMENT CRACKED ACROSS THE SPAN. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,552 hrs

DURING 25-HOUR AD INSPECTION, AFT SEGMENT CRACKED ACROSS THE SPAN. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,534 hrs

AFT COUPLING OF NR 2 TAILROTOR DRIVESHAFT HAS A CRACK ACROSS THE SPAN ON THE FORWARD AND AFT SEGMENTS OF THE DISC PACK. (X)

Part: SEAL — LEAKING (FREEWHEEL UNIT) · airframe 2,534 hrs

DURING DAILY INSPECTION, FORWARD SEAL LEAKING, CARBON PORTION PITTED. (X)

Part: PITCH HORN — CORRODED (MAIN ROTOR) · airframe 2,486 hrs

AT FIRST OVERHAUL OF MAIN ROTOR HUB ASSEMBLY, CORROSION PITTING UNDER BUMPER PLATES. (X)

Part: PITCH HORN — CORRODED (MAIN ROTOR) · airframe 2,486 hrs

AT FIRST OVERHAUL OF MAIN ROTOR HUB ASSEMBLY, CORROSION PITTING UNDER BUMPER PLATES. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,455 hrs

DURING 25-HOUR AD INSPECTION, DSIC PACK CRACKED IN TWO PLACES ACROSS THE SPAN OF THE FORWARD SEGMENT. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,381 hrs

DURING 25-HOUR AD INSPECTION, AFT SEGMENT CRACKED ACROSS SPAN. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,369 hrs

DURING 25-HOUR AD INSPECTION, AFT SEGMENT CRACKED ACROSS THE SPAN. (X)

Part: DUCT — CRACKED (OIL COOLER) · airframe 2,274 hrs

UPON DAILY INSPECTION, CRACKS IN CORNERS CAUSED BY INHERENT VIBRATION. (X)

Part: HOUSING — CRACKED (T/R BEARING)

DURING DAILY INSPECTION AND BEARING LUBRICATION, FOUND HOUSING CRACKED AND BLACK GREASE EXPELLED FROM AROUND THE SEAL DETERMINING BEARING DAMAGED. (X)

Part: HOUSING — CRACKED (TAIL ROTOR)

DURING DAILY INSPECTION AND BEARING LUBRICATION, FOUND HOUSING CRACKED AND BLACK GREASE EXPELLED FROM AROUND THE SEAL DETERMINING BEARING DAMAGED. (X)

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 5 COUPLING CRACKED THROUGH ONE LAMINATE ON AFT FACING SIDE OF COUPLING, POSSIBLE CAUSE UNKNOWN. (X)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 2,057 hrs

DURING 25-HOUR AD INSPECTION, ONE LAMINATE IS CRACKED (AFT LAMINATE). (X)

Part: DISC PACK — CRACKED (NR 3) · airframe 1,898 hrs

DURING 25-HOUR AD INSPECTION, FOUND CRACK AT INBOARD FORWARD SEGMENT OF DISC PACK. (X)

Part: BEARING — ROUGH (TAIL ROTOR)

DURING DAILY INSPECTION, FORWARD BEARING FOUND ROUGH. BOTH FORWARD AND REAR BEARINGS FOUND ROUGH.

Part: HOUSING — CRACKED (BLOWER)

DURING DAILY INSPECTION, BLOWER HOUSING FOUND CRACKED.

Part: BEARING — ROUGH (TAIL ROTOR)

DURING DAILY INSPECTION, FORWARD BEARING FOUND ROUGH. BOTH FORWARD AND REAR BEARINGS FOUND ROUGH.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 7 TAILROTOR DISC CRACKED.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND CRACKED 1ST FORWARD SEGMENT.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 7 COUPLING CRACKED, FIRST FORWARD DISC.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 7 DISC PACK CRACKED.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, NR 7 DISC PACK CRACKED.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 3 DISC PACK CRACKED.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 3 DISC PACK CRACKED.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION, FOUND NR 7 DISC PACK HAS 2 CRACKS.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING 25-HOUR AD INSPECTION. NR 7 DISC PACK HAS 2 CRACKS.

Part: SUPPORT — MISINSTALLED (TAILBOOM)

SUPPORT MISINSTALLED.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING RECURRING INSPECTION OF AD 97-24-17, ONE OUTBOARD DISC IN THE DISC PACK IS CRACKED. SUBMITTER STATED THIS IS THE SECOND CRACKED NEW STYLE DISC PACK IN 50 HOURS.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING RECURRING INSPECTION OF AD 97-24-17, BOTH OUTBOARD DISCS IN THE DISC PACK ARE CRACKED. SUBMITTER STATED THIS IS THE FIRST OCCURRENCE WITH THE NEW STYLE DISC PACKS.

Part: DISC PACK — CRACKED (T/R DRIVE)

DURING COMPLIANCE OF AD 97-24-17, FOUND DISC PACK CRACKED.