N50293

Part: BATTERY — DISCHARGED (MASTER) · airframe 7,928 hrs

BATTERY OUT LIGHTS CAME ON. SHOP REPAIR.

Part: DRIVE SHAFT — WORN (TAIL ROTOR)

TAIL ROTOR DRIVE SHAFT WORN EXCESSIVELY.

Part: SHAFT — DAMAGED (TAIL ROTOR)

TAIL ROTOR GEARBOX SHAFT HAS PLATING PEELING. REPAIRED.

Part: SHAFT — PEELING (TAIL ROTOR DRIVE)

TAIL ROTOR DRIVE SHAFT PLATING PEELING. REPAIRED.

Part: CASE — CORRODED (TRANSMISSION)

LOWER TRANSMISSION CASE CORRODED AT ATTACHMENT FLANGE. REPAIRED.

Part: BLADE — DAMAGED (MAIN ROTOR) · airframe 7,254 hrs

THE OUTBOARD ABRASION STRIP HAS A HOLE PENETRATED THROUGH THE STRIP.

Part: STARTER — FAILED (STARTER/GEN)

UNABLE TO OBTAIN STARTING RPM. SENT TO CORPORATE SERVICE SUPPLY, INC. FOR OVERHAUL.

Part: INDICATOR — FLUCTUATES (COCKPIT)

RPM INDICATION NEEDLES STICKING AND FLUCTUATING.

Part: LINE — FAILED (ECU)

SHORTLY AFTER TAKEOFF WHEN AIR CONDITIONER WAS TURNED ON, THE PILOT HEARD A LOUD NOISE. RETURNED TO BASE AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND DUCT HOSE HAD BLOWN OFF. REPLACED SAME. REF: AIRESEARCH MANUAL 4-379, FIGURE 6, ITEM 20.

Part: TRANSCEIVER — MALFUNCTIONED (E/E BAY)

TRANSCEIVER HAS LOW POWER AND SENSITIVITY ON HIGH END OF FREQUENCY BAND.

Part: INDICATOR — STICKING (TRIPLE TACH)

TRANSMISSION PRESSURE INDICATOR STICKING.

Part: FUEL CELL — LEAKING (FUEL SYSTEM)

FUEL CELL LEAKING.

Part: ALTIMETER — FAILED (COCKPIT)

ALTIMETER FAILED FRICTION ERROR TEST.

Part: WHEEL — MISMANUFACTURED (1ST STAGE)

ENGINE REMOVED DUE TO COMPRESSOR OVERHAUL. TURBINE DISASSEMBLED DUE TO LOW POWER ON TEST CELL. UPON INSPECTION OF TURBINE PARTS NOTED: MEASURED .006 INCH OVER BLUE PRINT SPECS. (6.190 INCH - 6.191 INCH) ON NR 1 WHEEL OUTSIDE DIAMETER. INSTALLED A NEW NR 1 WHEEL.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM WARNING LIGHT AND AUDIO ARE INTERMITTENTLY COMING ON.

Part: WHEEL — MISMANUFACTURED (ENGINE)

ENGINE REMOVED DUE TO COMPRESSOR OVERHAUL. TURBINE DISASSEMBLED DUE TO LOW POWER ON TEST CELL. UPON INSPECTION OF TURBINE PARTS NOTED: MEASURED .006 INCH OVER BLUEPRINT SPECS (6.190-6.191) ON NR 1 WHEEL OUTSIDE DIAMETER. INSTALLED A NEW NR 1 WHEEL.

Part: SERVO MOTOR — INOPERATIVE (FUEL CONTROL)

SERVO WILL NOT EXTEND OR RETRACT.

Part: VALVE — FAILED (OIL SOV)

VALVE NOT OPENING.

Part: BEARING — UNBONDED (MIXING LEVER)

TEFLON LINER UNBONDED AND BEARING VERY STIFF. UNABLE TO MOVE INNER RACE. REPLACED WITH NEW BEARING.

Part: WARN SYS — FAILED (OIL PRESS)

T-OIL LIGHT WILL NOT GO OUT.

Part: COMPASS — FAILED (COCKPIT)

MAG COMPASS LEAKING.

Part: RPM WARNING BOX — INTERMITTENT (ROTOR RPM)

RPM WARN BOX COMES ON INTERMITTENTLY.

Part: ENCODER — FAILED (COCKPIT)

ALTITUDE ENCODER NO VALID OUTPUT.

Part: IDICATORN — ERRATIC (EXH TEMP)

EXH TEMP INDICATOR ERRATIC AT MID UPPER RANGE.

Part: N1 COUPLING — WEAR (TURBINE)

ENGINE REMOVED DUE TO IMPELLER CYCLES: TURBINE DISASSEMBLED DUE TO N1 DRAG ON TEST CELL. UPON INSPECTION OF TURBINE PARTS NOTED: SPLINE WEAR BEYOND SERVICEABLE LIMITS ON N1 COUPLING SPLINE (FAILED NO GO GAUGE) INSTALLED A NEW N1 COUPLING.

Part: TRANSMISSION — PITTED (M/R)

SCRAPPED THE FOLLOWING: (5 EA) AXLES P/N 4619204001- SCRAPPED DUE TO EXCESSIVE PITTING ON LOADED SURFACE. (1 EA) PINION P/N 44638302002 - SCRAPPED DUE TO GEAR TEETH SPALLING. (1 EA) BEARING P/N 4619303081 - SCRAPPED DUE TO SPALLING ON OUTER RACE &ROLLERS. (BEARING WAS CAUSE OF METAL CONTAMINATION) REPLACED WITH SERVICEABLE PARTS.

Part: CLUTCH — WORN (FREEWHEEL)

FREEWHEEL CLUTCH WORN SPRAG RETAINER.

Part: TRANSCEIVER — FAILED (COCKPIT ATC)

REPLY LIGHT WOULD NOT OPERATE. PERFORMED PRELIMINARY INSPECTION, FOUND REPLY LIGHT INOPERATIVE. REPLACED PHOTOCELL V301. REPAIRED. ALSO REPLACED DETERIORATED RESISTOR (R477). ADJUSTED PULSE WIDTH AND FREQUENCY, CLEANED WAFERS, PLACED IN FREEZER, HEATED AND VIBRATED. BENCHCHECK GOOD.

Part: GEAR BOX — MAKING METAL (INTERMED GR BOX)

INTERMEDIATE GR BOX MAKES METAL.

Part: INDICATOR — STICKS (EXH TEMP)

INDICATOR NEEDLE INDICATES HIGH IN UPPER RANGE AND INTERMITTENTLY STICKS.

Part: TRANSMITTER — DEFECTIVE (MAST TORQUE)

TORQUE NEEDLE INDICATES LOW OUT OF TOLERANCE.

Part: INDICATOR — READS LOW (MAST MOMENT)

NEEDLE INDICATES LOW OUT OF TOLERANCE. SENT TO MASCO FOR WARRANTY REPAIR.

Part: LINER — CRACKED (COMB SKIRT)

ENGINE REMOVED DUE TO LOW POWER. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: CRACKS BEYOND SERVICEABLE LIMITS ON #1 NOZZLE VANES AND CRACKED BEYOND SERVICEABLE LIMITS ON COMB. LINER SKIRT. REPLACED DISCREPANT PARTS.

Part: NOZZLE VANES — CRACKED (NR 1)

ENGINE REMOVED DUE TO LOW POWER. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: CRACKS BEYOND SERVICEABLE LIMITS ON #1 NOZZLE VANES AND CRACKED BEYOND SERVICEABLE LIMITS ON COMB. LINER SKIRT. REPLACED DISCREPANT PARTS.

Part: WHEEL — DEFECTIVE (1ST STAGE)

ENGINE REMOVED DUE TO LOW POWER. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: MINOR SULFIDATION ON ALL 1ST STAGE WHEEL BLADES. SCRAPPED 1ST STAGE WHEEL.

Part: INDICATOR — WONT TEST (MAST MOMENT)

INDICATOR WILL NOT TEST PROPERLY.

Part: TRANSMITTER — WONT TEST (M/R MAST)

TRANSMITTER WILL NOT TEST PROPERLY.

Part: TRANSCEIVER — FAILED (COCKPIT VHF)

WOULD NOT RECEIVE OR TRANSMIT. FOUND CONNECTION ON E136 HAD A BURNT HOLE WITH CARBON BUILD UP ON IT. CLEANED BURNT HOLE AND HUMISEALED. REPAIRED. REPLACED BAD DISPLAY DS101. VOR BEARING OUT OF TOLERANCE. PERFORMED VOR/LOC CONVERTER ALIGNMENT, REPAIRED. BENCH CHECK GOOD.

Part: PRESSURE SWITCH — FAILED (XMSN)

SWITCH CONTACTS WILL NOT OPEN OR CLOSE. T-OIL LIGHT ILLUMINATED IN FLIGHT.

Part: RECEIVER — DEFECTIVE (COCKPIT ADF)

DISPLAY FLICKERS. REPLACED DISPLAY REPAIRED.

Part: SWITCH — MALFUNCTION (OIL PRESS)

SWITCH WILL NOT CLOSE.

Part: ELT — WONT TEST (COCKPIT)

ELT WILL NOT TEST. TIME SINCE REPAIR 64:35.

Part: WHEEL — SULFIDATION (1ST STAGE)

ENGINE REMOVED DUE TO COMBUSTION CASE BAFFLE BROKEN AND ERODED 1ST STAGE NOZZLE. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: MINOR SULFIDATION ON ALL 1ST STAGE WHEEL BLADES. SCRAPPED 1ST STAGE WHEEL.