N401PH

Part: BEARING — SPALLED (TURBINE) · airframe 3,458 hrs

ENGINE REMOVED FOR REPAIR FOR A TURBINE OVERHAUL, THE TURBINE NR 5 BEARING WAS FOUND SPALLING ON OUTER RACE SPLIT. INSTALLED A NEW NR 5 BEARING

Part: HMU — MALFUNCTIONED (ENGINE) · airframe 1,286 hrs

AIRCRAFT YAWED LEFT SUDDENLY FOLLOWED IMMEDIATELY BY DECREASE IN ENGINE NOISE, LOSS IN ALTITUDE, ACTIVATION OF LOW RPM AUDIO AND FADEC FAIL AUDIO. CAUTION LIGHTS THAT ILLUMINATED WERE FADEC FAIL, FADEC DEGRADED, RESTART FAULT, AUTO RELIGHT AND RPM, FADEC MODE SELECT TO MANUAL CONTROL. REMOVED HMU AND SENT TO REPAIR STATION FOR BENCH CHECK AS RECEIVED. NOTE: PREVIOUSLY SUBMITTED ON 2/6/09.

Part: TRANSDUCER — FAILED (ENGINE TORQUE)

PRESSURE TRANSDUCER'S TORQUE INDICATION FELL TO ZERO.

Part: STARTER — FAILED (START/GEN)

STARTER WOULD NOT MOTOR ENGINE.

Part: AUDIO CONTROL — FAILED (COCKPIT)

NO SIDETONE WHEN TRANSMITTING ON VHF OR FM.

Part: TRANSCEIVER — WEAK (COCKPIT)

TRANSCEIVER TRANSMITS VERY WEAK OR NOT AT ALL.

Part: ENCODER — MALFUNCTIONED (ALTIMETER)

ENCODER SKIPPING ELEVATORS IN REPORTING MODE.

Part: STATIC INVERTER — INOPERATIVE (AC SYSTEM)

STATIC INVERTER INOPERATIVE, NO POWER.

Part: TRANSPONDER — FAILED (ATC)

TRANSPONDER DISPLAY COMES UP 7777 WHEN UNIT IS TURNED ON.

Part: CONTROL UNIT — FAILED (COCKPIT)

CONTROL UNIT SHORTED AND TRIPPED CIRCUIT BREAKER.

Part: CONTROL UNIT — MALFUNCTIONED (COCKPIT)

CONROL UNIT HAS INTERMITTENT LIGHT SURGES.

Part: CONTROL UNIT — MALFUNCTIONED (INST LIGHTS)

COPILOT INSTRUMENT LIGHT PROBLEM.

Part: FILTER — FAILED (ENGINE OIL)

ENGINE OIL FILTER'S BYPASS BUTTON POPS AFTER ENGINE OPERATION.

Part: END PLATE — CRACKED (H STAB V FIN)

HORIZ STAB V FIN VERT END PLATE HAS THREE INCH CRACK AFT OF MOUNTING FLANGE.

Part: INDICATOR — INTERMITTENT (AIRSPEED)

AIRSPEED INDICATOR LIGHTS INTERMITTENT.

Part: INDICATOR — FAILED (FUEL QTY)

NR1 SUPPLY INOPERATIVE.

Part: RECEIVER — FAILED (COCKPIT)

DOES NOT TRANSMIT.

Part: CONTROL — FAILED (COCKPIT)

DISPLAY DOES NOT LIGHT UP. PERFORMED PRELIMINARY INSPECTION. FOUND NO DISPLAY. SWAPPED DISPLAY DS103. NO HELP. SWAPPED BOARDS. FOUND PROBLEM ON PROCESSOR BOARD. TROUBLESHOT AND FOUND BROKEN FOIL ON BOARD. REPAIRED BROKEN FOIL, REPAIRED, INSTALLED MOD 2 KIT P/N050-2780-00 AND APPLIED HUMISEAL TO P305 HEADER. BENCH CHECK GOOD.

Part: INNER SLEEVE — WORN (T/R HEAD)

T/R HEAD BEARING BUSHING SEATS AND SEAL RIDE WORN.

Part: CONTROL UNIT — FAILED (COCKPIT)

CONTROL POPS CIRCUIT BREAKER.

Part: TRANSCEIVER — FAILED (COCKPIT)

TRANSCEIVER WILL NOT TRANSMIT. FOUND VR3 VOLTAGE REGULATOR ON VCO CONTROL BOARD INOPERATIVE. REPLACED VOLTAGE REGULATOR. REPAIRED UNIT. BENCH CHECK GOOD.

Part: TRANSCEIVER — FAILED (COCKPIT)

RT138 PIN ON FRONT CONNECTOR BROKEN. POPS CIRCUIT BREAKER.

Part: INDICATOR — FAILED (COCKPIT)

RPM INDICATOR WILL NOT INDICATE.

Part: INDICATOR — FAILED (AIR SPEED)

AIR SPEED NEEDLE DOES NOT RETURN TO ZERO ON INDICATOR.

Part: INDICATOR — READS HIGH (ENG N1)

N1 READS HIGH AT 90% AND ABOVE

Part: TRANSDUCER — ERRATIC (ENG TORQ)

ENG TORQUE ERRATIC READINGS.

Part: ACTUATOR — LEAK (T/R)

ACTUATOR LEAK BETWEEN ELECTRO MECHANICAL ACTUATOR AND HYDRAULIC SERVO BODY.

Part: FUEL PUMP — LEAKING (ENGINE)

ON ENGINE INSTALLATION RUNUPS FUEL FOUND LEAKING EXCESSIVELY FROM FUEL PUMP CASE DRAIN. REPLACED FUEL PUMP.

Part: TRANSMITTER — DEFECTIVE (MAST)

UNIT TRANSMITS LOW.

Part: INDICATOR — FAULTY (MAST MOMENT)

LIMIT LIGHT COMES ON TOO SOON.

Part: TRANSMITTER — INTERMITTENT (MAST MOMENT)

TORQUE TRANSMITTER INTERMITTENT. TIME SINCE REPAIR 31:25.

Part: INDICATOR — INTERMITTENT (MAST MOMENT)

INDICATOR INTERMITTENT. TIME SINCE REPAIR 31:25.

Part: INDICATOR — READS HIGH (COCKPIT TOT)

TOT INDICATOR READS 10-15 PERCENT C HIGH THROUGHOUT RANGE.

Part: INDICATOR — LIGHTS INOP (INST LIGHTS)

INSTRUMENT LIGHTS ON 1/2 WORK. FOUND 4 BURNT LAMPS. PERFORMED PRELIMINARY INSPECTION. REPLACED 4 EACH LAMPS. PERFORMED COMPLETE CALIBRATION AND ALIGNMENT. BENCH CHECK GOOD.

Part: TRANSCEIVER — DEFECTIVE (COCKPIT VHF)

WILL NOT TRANSMIT. FOUND UNIT TO HAVE INTERMITTENT TRANSMIT POWER AND WEAK RECEIVER SENSITIVITY. ADJUSTED PRESELECTOR TUNING VOLTAGE AND ALIGNED RECEIVER, REPAIRED RECEIVER SENSE PROBLEM. UNIT HAS INTERMITTENT TRANSMIT PROBLEM FROM 138-140MHZ, REPLACED VCO MODULE ,REPAIRED. BENCH CHECK GOOD.

Part: TRANSCIEVER — INOPERATIVE (COCKPIT VHF)

RECEIVER INOPERATIVE.

Part: SKYNAV 5000 — DEFECTIVE (COCKPIT GPS)

DOES NOT RETAIN USER WAYPOINT MEMORY.

Part: HORIZON GYRO — FAILED (COCKPIT)

GYRO TUMBLES WHILE CAGING, FLAG PULL IS SLOW, CAUSES PITCH/ROLL CSAS TO BE UNRELIABLE.

Part: CONTROL UNIT — DEFECTIVE (COCKPIT)

CANNOT CHANGE FREQUENCIES. REPLACED BAD TRANSFER SWITCH S102. REPAIRED. REPLACED WEAK DISPLAY DS101 AND FADED LENS. REPLACED HEADER P201 AND APPLIED HUMISEAL TO HEADER FOR CORROSION CONTROL. BENCH CHECK GOOD.

Part: AUDIO CONTROL — DEFECTIVE (COCKPIT)

BOTH VHF'S GARBLED AND BLEED OVER (VHF1 TO VHF2) REPLACED C309 P/N 10-36-227, BENCH TEST GOOD WITH NAT TS-AA TEST PANEL.