N967MB

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM LIGHT AND HORN COMES ON INTERMITTENTLY.

Part: NOZZLE — MISMANUFACTURED (4TH STAGE)

RECEIVING INSPECTION REVEALED: VOIDS IN NR 4 NOZZLE TIP PATHS. PART OVERHAULED ON WO NR L174496.

Part: SERVOMOTOR — FAILED (FUEL CONTROL)

SERVO MOTOR WILL NOT ACTUATE UP OR DOWN, BRAKE STICKING.

Part: AUDIO PANEL — WEAK (COCKPIT)

AUDIO EXTREMELY WEAK ON AUDIO PANEL.

Part: INDICATOR — FAILED (ENG OIL)

INDICATOR WILL NOT INDICATE. INDICATOR WAS REMOVED FROM BOWL AND CLEANED. INSTALLED INDICATOR BACK ON BOWL, TESTED AND INDICATOR STILL DIDN'T WORK.

Part: LOWER HOUSING — CORRODED (M/R)

M/R GR BOX LINERS LOOSE. INTERNAL SHAFT SEAT WORN. CORROSION ON LOWER FLANGE.

Part: UPPER HOUSING — DEFECTIVE (M/R GR BOX)

UPPER BORE WORN LINER LOOSE.

Part: OIL PUMP — FAILED (M/R GR BOX)

OIL PUMP OUTER LINER BREAKING DOWN.

Part: CENTER CASE — WORN (GR BOX)

TR QUILL WORN. OIL NOZZLE SEAT WORN. ACCY FAN DRIVE QUILLS WORN AND PIN SEAT WORN.

Part: ALT ENCODER — FAILED (COCKPIT)

ALT ENCODER HAS NO VALID OUTPUT.

Part: WASHER — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. WASHER WORN. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BALL BEARING — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BALL BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: OUTER DEFLECTION — CRACKED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. OUTER DEFLECTION CRACKED. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: SHAFT — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. WORN CLUTCH AREA. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BALL BEARING — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER AND CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: DISC — WARPED (ROTOR BRAKE)

3000 HOUR OVERHAUL DUE. BRAKE DISC WARPED. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: PLANETARY GEAR — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. PLANETARY GEAR HAS CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BALL BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: PLANETARY AXLE — PITTING (M/R GR BOX)

3000 HOUR OVERHAUL DUE. PLANITARY AXLE PITTING. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BUSHING — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BUSHING LOCK AREA WORN. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: SUN GEAR — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. SUN GEAR FRETTING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: GEAR — SPALLED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. GEAR SPALLING. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: CONNECTING SHAFT — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. CONNECTING SHAFT DRIVE SPLINES WORN. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BEVEL GEAR — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEVEL GEAR WORN SEAT AREA. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ELBOW — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. ELBOW HAS CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROTOR MAST — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. MAST HAD CORROSION IN BUSHING BORES BEYOND LIMITS. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: SLIDING SLEEVE — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. SLIDING SLEEVE HAS CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: SUPPORT TUBE — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. SUPPORT TUBE WORN ANODIZED SURFACE. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ACCY HOUSING — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. ACCY HOUSING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: CYLINDER ROLLER — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. ROLLER BEARING P/N 4638-302-025 RECOMMENDED. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: CYLINDER ROLLER — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. CORROSION ON ROLLERS. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: SUN GEAR — SPALLED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. SUN GEAR SPALLING. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: BALL BEARING — CORRODED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: DRIVE SHAFT — WORN (M/R GR BOX)

3000 HOUR OVERHAUL DUE. WORN GEAR SET. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: ROLLER BEARING — FAILED (M/R GR BOX)

3000 HOUR OVERHAUL DUE. ROLLER BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.

Part: OIL COOLER — LEAKING (ENGINE)

OIL COOLER LEAKING.

Part: CALIPER — STRIPPED (ROTOR BRAKE)

ROTOR BRAKE CALIPER THREADS IN INLET PLATE STRIPPED.

Part: BEARING — FAILED (FUEL BOOST)

BOOST PUMP WAS REMOVED FOR BEING INOPERATIVE. DISASSEMBLED AND FOUND THAT BEARING CAME APART AND CAUSED ARMATURE TO BURN UP. BEARING WAS RECEIVED IN BEARING KIT D107318-21 ON 2-3-97.

Part: ROTOR — FAILED (BOOST PUMP)

BOOST PUMP WAS REMOVED FOR BEING INOPERATIVE. ARMATURE SHORTED. DISASSEMBLED AND FOUND THAT BEARING CAME APART AND CAUSED ARMATURE TO BURN UP. SENT TO MIR BEARING WAS RECEIVED IN BEARING KIT P/N D107318-21.

Part: TACH GENERATOR — FAILED (ENGINE)

EACH GENERATOR DOES NOT INDICATE RPM.

Part: INDICATOR — MALFUNCTION (MAST MOMENT)

MAST MOMENT INDICATOR LIGHT FLASHES IN FLIGHT.

Part: TRANSMITTER — FAULTY (MAST MOMENT)

MAST TORQUE TRANSMITTER FAULTY. INDICATOR LIGHT FLASHES IN FLIGHT.

Part: WARNING BOX — MALFUNCTION (ROTOR)

RPM LIGHT AND AUDIO COMES ON DURING FLIGHT.

Part: ROTOR MAST — CORRODED (M/R)

CORROSION ON FLANGE SURFACE AND IN BORES BEYOND REPAIRABLE LIMITS. LIMITS .3MM (.0118") AFTER REPAIR. REPLACED WITH SERVICEABLE UNIT.

Part: TUBE ASSY. — OUT OF SPEC (GEARBOX)

ENGINE REMOVED DUE TO AFT T/M LEAKS. UPON INSPECTION OF GEARBOX PARTS NOTED THE FOLLOWING: TUBE FAILED DIMENSIONAL CHECK PER CEB 1307. INSTALLED NEW TUBE.

Part: CLUTCH — WORN EXCESS (FREEWHEEL)

INNER CAGE WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE CLUTCH S/N 3617, T.T. 2513:45, T.S.I. 0:00.

Part: TRANSCEIVER — FAILED (COCKPIT)

NO OUTPUT POWER. FOUND WHEN UNIT TURNED TO STANDBY, UNIT TURNS OFF. REPLACED SWITCH BOARD ASSEMBLY. REPAIRED PROBLEM. REPLACED PHOTOCELL V301 DUE TO BEING WEAK. REPAIRED. BENCH CHECK GOOD.

Part: SERVOMOTOR — INOPERATIVE (SERVO SYS)

WHEN ACTUATOR WAS HEATED UP IT BECAME INOPERATIVE.

Part: SPLINE ADAPTER — FRETTING (COMPRESSOR)

ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: 1) FRETTING ON SPUR ADPATER GEARSHAFT DUE TO RETAINING RING NOT IN SPLINE ADAPTER GROOVE AND GROOVED NR 2 1/2 BEARING INNER RACE O.D. 2) EXCESSIVE WEAR ON SPLINE ADAPTER RETAINING RING GROOVE. 3) SPIRAL LOCK RING BECOMING DISLODGED IN SPLINE ADAPTER AND CAUSING METAL IN OIL. 4) GROOVED AND DENTED ROLLERS IN NR 2 1/2 BEARING. NOTE: NR 2 1/2 BEARING INNER RACE REMOVED FROM SPUR ADAPTER GEARSHAFT AND SENT WITH OTHER PARTS AND N1 COUPLING BEING SENT FOR INSPECTION AS N1 SHAFTING SET. SEE MMIR'S NR 6477 THROUGH NR 6481 FOR ADDITIONAL PARTS REPLACED.

Part: SPIRAL LOCK RING — DISLODGED (COMPRESSOR)

ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: 1) FRETTING ON SPUR ADPATER GEARSHAFT DUE TO RETAINING RING NOT IN SPLINE ADAPTER GROOVE AND GROOVED NR 2 1/2 BEARING INNER RACE O.D. 2) EXCESSIVE WEAR ON SPLINE ADAPTER RETAINING RING GROOVE. 3) SPIRAL LOCK RING BECOMING DISLODGED IN SPLINE ADAPTER AND CAUSING METAL IN OIL. 4) GROOVED AND DENTED ROLLERS IN NR 2 1/2 BEARING. NOTE: NR 2 1/2 BEARING INNER RACE REMOVED FROM SPUR ADAPTER GEARSHAFT AND SENT WITH OTHER PARTS AND N1 COUPLING BEING SENT FOR INSPECTION AS N1 SHAFTING SET. SEE MMIR'S NR 6477 THROUGH NR 6481 FOR ADDITIONAL PARTS REPLACED.

Part: COUPLING — DEFECTIVE (COMPRESSOR)

ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: 1) FRETTING ON SPUR ADPATER GEARSHAFT DUE TO RETAINING RING NOT IN SPLINE ADAPTER GROOVE AND GROOVED NR 2 1/2 BEARING INNER RACE O.D. 2) EXCESSIVE WEAR ON SPLINE ADAPTER RETAINING RING GROOVE. 3) SPIRAL LOCK RING BECOMING DISLODGED IN SPLINE ADAPTER AND CAUSING METAL IN OIL. 4) GROOVED AND DENTED ROLLERS IN NR 2 1/2 BEARING. NOTE: NR 2 1/2 BEARING INNER RACE REMOVED FROM SPUR ADAPTER GEARSHAFT AND SENT WITH OTHER PARTS AND N1 COUPLING BEING SENT FOR INSPECTION AS N1 SHAFTING SET. SEE MMIR'S NR 6477 THROUGH NR 6481 FOR ADDITIONAL PARTS REPLACED.

Part: SHAFT — FRETTED (COMPRESSOR)

ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: 1) FRETTING ON SPUR ADPATER GEARSHAFT DUE TO RETAINING RING NOT IN SPLINE ADAPTER GROOVE AND GROOVED NR 2 1/2 BEARING INNER RACE O.D. 2) EXCESSIVE WEAR ON SPLINE ADAPTER RETAINING RING GROOVE. 3) SPIRAL LOCK RING BECOMING DISLODGED IN SPLINE ADAPTER AND CAUSING METAL IN OIL. 4) GROOVED AND DENTED ROLLERS IN NR 2 1/2 BEARING. NOTE: NR 2 1/2 BEARING INNER RACE REMOVED FROM SPUR ADAPTER GEARSHAFT AND SENT WITH OTHER PARTS AND N1 COUPLING BEING SENT FOR INSPECTION AS N1 SHAFTING SET. SEE MMIR'S NR 6477 THROUGH NR 6481 FOR ADDITIONAL PARTS REPLACED.

Part: BEARING — DEFECTIVE (COMPRESSOR 2.5)

ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: 1) FRETTING ON SPUR ADPATER GEARSHAFT DUE TO RETAINING RING NOT IN SPLINE ADAPTER GROOVE AND GROOVED NR 2 1/2 BEARING INNER RACE O.D. 2) EXCESSIVE WEAR ON SPLINE ADAPTER RETAINING RING GROOVE. 3) SPIRAL LOCK RING BECOMING DISLODGED IN SPLINE ADAPTER AND CAUSING METAL IN OIL. 4) GROOVED AND DENTED ROLLERS IN NR 2 1/2 BEARING. NOTE: NR 2 1/2 BEARING INNER RACE REMOVED FROM SPUR ADAPTER GEARSHAFT AND SENT WITH OTHER PARTS AND N1 COUPLING BEING SENT FOR INSPECTION AS N1 SHAFTING SET. SEE MMIR'S NR 6477 THROUGH NR 6481 FOR ADDITIONAL PARTS REPLACED.

Part: WARNING BOX — MALFUNCTION (ROTOR RPM)

LOW ROTOR HAS CONTINUOUS HORN. . TIME SINCE REPAIR 11:15.

Part: INDICATOR — MIS MARKED (DUAL TORQUE)

TORQUE IND. WORKS WELL, BUT RANGE MARKING OFF AS PER FLIGHT MANUAL. REPLACED WITH SERVICEABLE TORQUE IND.

Part: GYRO — DEFECTIVE (COCKPIT HORIZ)

GYRO PRECESSES IN PITCH, SLOW TO ERECT, LIGHTS INOPERATIVE.

Part: CLUTCH — CAGE WORN (FREEWHEEL)

INNER CAGE WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE CLUTCH.