N427PH

Part: BEARING — SPALLED (ENGINE) · airframe 10,432 hrs

ENGINE REMOVED 10-15-16 FOR NR 5 BEARING UPGRADE. NR 5 BEARING EXHIBITED SPALLING ON OUTER RACE SPLIT. REPLACED WITH NEW NR 5 BEARING.

Part: BEARING — SPALLED · airframe 4,849 hrs

ENGINE REMOVED FOR TURBINE OVERHAUL 3-22-15. NR 5 BEARING REMOVED DUE TO PROBABLE SPALLING AT OUTER RACE SPLIT. REPLACED BEARING.

Part: BEARING — SPALLED (NR 5) · airframe 5,395 hrs

ENGINE REMOVED DUE TO TURBINE OVERHAUL. NR 5 BEARING EXHIBITED SPALLING BALLS ON OUTER RACE. REPLACED WITH NEW BEARING.

Part: BEARING — SPALLED (TURBINE) · airframe 4,296 hrs

ENGINE REMOVED DUE TO DEBRIS FOUND ON SCAVENGE FILTER. SPALLING FOUND ON OUTER RACE OF NR 5 BEARING AT SPLIT. REPLACED NR 5 BEARING WITH NEW.

Part: BEARING — SPALLED (NR 5) · airframe 2,646 hrs

ENGINE REMOVED FOR TURBINE O/H AND 2000 HR INSP. NR 5 BEARING EXHIBITED SPALLING IN OUTER RACE SPLIT. INSTALLED NEW BEARING.

Part: SWITCH — MALFUNCTIONED (FUEL PRESSURE)

PUMP LIGHT WON'T COME ON.

Part: SWITCH — MALFUNCTIONED (FUEL PRESSURE)

LOW LEVEL FUEL LIGHT STAYS ON WHEN BATTERY SWITCH IS ON WITH 600 POUNDS OF FUEL.

Part: BEARING — ROUGH (BIPOD MOUNT)

BIPOD MOUNT HAS ROUGH BEARINGS.

Part: BIPOD MOUNT — WORN (ENGINE)

BEARING HAS AXIAL PLAY BEYOND .005 INCH ON BIPOD MOUNT.

Part: PUMP — LEAKING (TRANSMISSION OIL)

TRANSMISSION OIL PUMP LEAKING FROM SEAL DRAIN.

Part: LINK — WORN (MAIN ROTOR)

LINK ASSEMBLY BEARINGS WORN.

Part: RELAY — STICKING (COCKPIT)

RELAY INTERMITTENTLY STICKS.

Part: UNIVERSAL — WORN (MAIN ROTOR)

UNIVERSAL HAS BEARINGS WORN.

Part: SPRING — WORN (MAIN ROTOR)

AFT BEARING IS UNSTAKED.

Part: TRANSCEIVER — INTERMITTENT (COCKPIT)

TRANSCEIVER UNIT IS INTERMITTENT.

Part: ANTENNA — MALFUNCTIONED (RADAR ALTIMETER)

AVI ANTENNA INTERMITTENT IN-FLIGHT.

Part: ANTENNA — MALFUNCTIONED (RADAR ALTIMETER)

RADAR ALTIMETER DISPLAY INACCURATE.

Part: ENCODER — DAMAGED (ALTIMETER)

EXCESSIVE CASE LEAKAGE IN ALTIMETER.

Part: INDICATOR — FAILED (ENGINE OIL)

ENGINE OIL TEMPERATURE INDICATION GOES TO ZERO EVERY 2 MINUTES THEN RETURNS TO NORMAL.

Part: INDICATOR — FAILED (MGB)

MGT INDICATOR WILL NOT INTERFACE WITH TERMINAL SOFTWARE.

Part: TRANSPONDER — INOPERATIVE (COCKPIT)

TRANSPONDER INOPERATIVE AND NO POWER OUT.

Part: INDICATOR — MALFUNCTIONED (FUEL QTY)

FUEL QUANTITY INDICATOR WORKS INTERMITTENTLY.

Part: BEARING — WORN (T/ROTOR)

TAIL ROTOR BEARING EXCESSIVELY WORN.

Part: RETAINER — MISMANUFACTURED (T/ROTOR)

TAIL ROTOR RETAINER WOULD NOT FIT ON NUT P/N NAS577B4A.

Part: COUPLING — CRACKED (T/ROTOR)

TAIL ROTOR COUPLING CRACKED.

Part: EXHAUST STACK — CRACKED (ENGINE)

ENGINE EXHAUST STACK IS CRACKED.

Part: SEAL — LEAKING (F/WHEEL M/R)

MAIN ROTOR FREEWHEEL FRONT SEAL LEAKING.

Part: ROTOR BRAKE — LEAKING (M/ROTOR)

MAIN ROTOR BRAKE IS OIL SOAKED AND LEAKING.

Part: ROTOR BRAKE — MISSING PARTS (M/ROTOR)

MAIN ROTOR BRAKE PADS MISSING.

Part: SHAFT — DAMAGED (M/R GEARBOX)

M/R GEARBOX HAS GROOVE CUT IN SHAFT BEYOND LIMITS.

Part: PRESSURE SWITCH — MALFUNCTIONED (ENGINE)

BOOST PUMP SWITCH HAS INTERMITTENT CONTACT PROBLEMS.

Part: TUBE ASSEMBLY — DEFECTIVE (M/R GR BOX)

TUBE ASSY LOWER ROD END BEARING ROUGH.

Part: PUMP BEARING — WORN (TRANSMISSION)

TRANSMISSION OIL PUMP BEARING WORN.

Part: TRANSDUCER — FAILED (ROTOR DRIVE)

TRANSDUCER FAILED. GOES ON ZERO IN FLIGHT.

Part: BEARING — WORN (M/R)

BEARING WORN. SERIAL NUMBERS REMOVED ARE A1279 AND A1226.

Part: LINK — WORN (T/R)

LINK HAS WORN BEARINGS.

Part: LEVER ASSEMBLY — WORN (M/R)

LEVER ASSY HAS WORN LININGS. SERIAL NUMBERS REMOVED ARE A1738 AND A1741.

Part: DISK COUPLING — CRACKED (T/R DRIVE)

DISK COUPLING CRACKED AND CORRODED.

Part: TRANSPONDER — FAILED (COCKPIT)

TRANSPONDER QUIT DURING CRUISE FLIGHT. PERFOMED PRELIMINARY INSPECTION. FOUND UNIT TO FIRE UP OK AT FIRST, BUT AFTER AWHILE, UNIT HAD ONLY 50% REPLY. ADJUSTED PRESELECTOR. NO HELP. REPLACED MIXER DIODE CR202. REPAIRED PROBLEM. UNIT QUIT RECEIVING AFTER WARM UP. FOUND PROBLEM TO BEON PRESELECTOR SIDE OF UNIT. REPLACED PRESELECTOR. FOUND UNIT NOT FIRING UP. MOVED COILS IN LOCAL OSCILLATOR. NO HELP.

Part: SEAL — LEAKING (M/R)

OIL SEAL LEAK.

Part: TRANSDUCER — INTERMITTENT (ROTOR)

TRANSDUCER INTERMITTENT ZERO OUTPUT.

Part: GEARBOX — LEAKING (T/R)

INPUT AND OUTPUT SEALS LEAKING.

Part: BEARING — LOOSE (YOKE)

ON POST FLIGHT FOUND CLICKING NOISE EMINATING FROM TRUNNION CLAMP RING AREA. SUSPECT TRUNNION BEARING LOOSE IN YOKE, CAUSING NOISE WHEN BLADES ARE FLAPPED. MORE NOTICEABLE AFTER FLIGHT WHEN WARM, NOISE DIMINISHES AS YOKE COOLS. REPAIRED AND INSPECTED BY OVERHAUL SHOP.

Part: CARBON SEAL — LEAKING (FREEWHEEL)

CARBON SEAL LEAKING.

Part: CYLINDER — FAILED (ROTOR BRAKE)

CYL ASSY WILL NOT HOLD PRESSURE, BLEEDS DOWN.

Part: EXHAUST STACK — CRACKED (ENGINE)

ENGINE EXHAUST STACK IS CRACKED.

Part: DISK COUPLING — CRACKED (T/R NR 2)

NR2 THOMAS COUPLING DISC CRACKED.

Part: PUMP — LEAKING (TRANSMISSION OIL)

TRANSMISSION OIL PUMP LEAKING.

Part: PITCH LINK — BENT (M/R)

ON DAILY INSPECTION FOUND PITCH LINK TUBE PORTION WAS BENT AT UPPER END.

Part: ROTOR BRAKE — FAILED (M/R)

ROTOR BRAKE PUCK SEPARATED.

Part: TERMINAL — CRACKED (COCKPIT)

CABLES NR P7A8 AND NR P7B8 IN THE CIRCUIT BREAKER PANEL AREA HAVE TERMINALS CRACKED. (REF: DESIGNATOR 2TB1) DUE TO THE STRESSES PUT ON THE CABLES DURING THE OPENING AND CLOSING OF THE OVERHEAD CIRCUIT BREAKER PANEL. THE TERMINAL ENDS COULD POSSIBLY SEVER CAUSING A MAJOR POWER FAILURE. ANOTHER POSSIBILITY IS THAT ONE CABLE COULD FAIL AND CONTACT THE AIRFRAME PRODUCING SEVERE ARCING. REPLACED AFFECTED TERMINAL ENDS.

Part: DISK COUPLING — CRACKED (T/R DRIVE)

ONE DISC ON COUPLING FOUND CRACKED ON DAILY INSPECTION.

Part: TRANSMITTER — FAULTY (FUEL PRESS)

FUEL PRESS TRANSMITTER WON'T COME ON LINE UNTIL CIRCUIT BREAKER IS PULLED AND PUSHED BACK IN.

Part: SUPPORT — MIS IDENTIFIED (STABILIZER)

SUPPORT IS MARKED FOR L/H SLAT SUPPORT P/N 206-023-119-109. PART IS FOR A R/H SLAT SUPPORT P/N 206-023-119-110.

Part: WINDOW — CRACKED (COCKPIT)

WINDOW CRACKED.

Part: AMMETER — FAILED (FUEL PRESS)

FUEL PRESSURE AMMETER PEGS OUT AND WILL NOT RETURN TO ZERO.

Part: DISK COUPLING — CRACKED (T/R DRIVE)

DISK COUPLING CRACKED.

Part: FLOAT COVER — TORN (EDGES)

FLOAT COVER TORN ALONG THE EDGES.

Part: DISK COUPLING — CRACKED (T/R DRIVE)

TAIL ROTOR DRIVE SHAFT DISC PACK 2ND FORWARD OF TAIL ROTOR GEARBOX CRACKED.

Part: OIL PUMP — LEAKS (TRANSMISSION)

TRANSMISSION OIL PUMP LEAKS THROUGH SEAL.

Part: BEARING — ROUGH (T/R DRIVE)

BEARINGS ROUGH. ALSO REPLACED 2 EACH MS172209 LOCKWASHERS. SERIAL NUMBERS OF BEARINGS REMOVED ARE E96-0569 AND E96-0577.

Part: RELAY — FAILED (LANDING LIGHT)

LANDING LIGHT STAYS ON WHEN SWITCH WAS OFF.

Part: DISK COUPLING — CRACKED (T/R)

TAIL ROTOR DRIVE SHAFT DISC PACK 2ND FORWARD OF TAIL ROTOR GEARBOX CRACKED.

Part: DISK COUPLING — CRACKED (T/R)

DISC COUPLING CRACKED.

Part: CLOCK — FAILED (COCKPIT)

INDICATES INCORRECTLY.

Part: DISK COUPLING — CRACKED (T/R DRIVE)

ONE DISK CRACKED IN THE PACK.

Part: HMU — FAILED (ENG FUEL)

NO LIGHT OFF - INTERMITTENT - THEN CONTINUOUS. DURING TROUBLESHOOTING FOUND NO FUEL FLOW FROM HMU.

Part: DISK COUPLING — CRACKED (T/R DRIVE)

ON DAILY INSPECTION, FOUND ONE DISK CRACKED ON THE AFT END OF THE #5 TAIL ROTOR DRIVESHAFT. CRACKED DISK WAS ON THE AFT OUTBOUND SIDE OF THE DISK PACK ASSEMBLY.

Part: SIGNAL COND — MALFUNCTION (FUEL LOW LIGHT)

FUEL LOW LIGHT STAYS ON UNTIL BATTERY SWITCH IS CYCLED.

Part: TUBE ASSEMBLY — CHAFED (FUEL SYS)

TUBE ASSEMBLY WAS CHAFED BY LABEL TAG RUBBING ON IT.

Part: STOP — WORN (M/R)

UP STOP WORN AND HAS EXCESSIVE PLAY.

Part: BEARING — DEFECTIVE (T/R GR BOX)

UPON COMPLYING WITH A 300 HOUR/3 MONTH T/R GEARBOX PITCH CHANGE MECHANISM LUBE, FOUND GREASE ZERT ON PITCH CHANGE HOUSING WOULD NOT ACCEPT GREASE. DISASSEMBLED PITCH CHANGE MECHANISM. ON INVESTIGATION FOUND BEARING 206-011-731-001 IN PITCH CHANGE HOUSING DID NOT HAVE A HOLE IN GREASE CHANNEL TO ALLOW GREASE INTO THE NEEDLE BEARING AREA. REMOVED BEARING AND INSTALLED SERVICEABLE BEARING.

Part: BEARING — MISMANUFACTURED (T/R GEARBOX)

TAIL ROTOR GEARBOX PITCH CHANGE MECHANISM WOULD NOT TAKE GREASE. BELL REPRESENTATIVE HAS CONFIRMED THAT BEARING RACE DID NOT HAVE REQUIRED HOLE. BELL HAS CHANGED BEARING MANUFACTURERS. THIS BEARING IS FROM NEW MANUFACTURER. VENDOR: PITCH LIGN RBC. VENDOR P/N : HRBC-ORSJ-7133.1. NOTE: THIS BEARING IS USED IN ALL 206L SERIES AND 407 AIRCRAFT UNDER P/N 206-011-731-001.