N724MB

Part: TURBINE — SEIZED (ECU)

TURBINE SEIZED.

Part: STARTER — MALFUNCTIONED (START/GENERATOR)

STARTER/GENERATOR NOISY AND ARCING.

Part: TRANSMITTER — INTERMITTENT (ELT)

ELT SELF-ACTIVATES INTERMITTENTLY.

Part: INDICATOR — MALFUNCTIONED (TOT)

INSTRUMENT INDICATION DROPS OFF TO ZERO.

Part: WARNING BOX — FAILED (RPM WARNING)

RPM WARNING CAUSES TRIM CIRCUIT BREAKER TO TRIP.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM WARNING, LIGHT COMING ON AT 100 PERCENT.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM WARNING, AUDIO LIGHT CAME ON IN-FLIGHT.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM WARNING LIGHT COMING ON IN-FLIGHT.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM WARNING, INTERMITTENT AUDIO AND LIGHT.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM WARNING CAUSES AUDIO AND RPM LIGHT TO COME ON.

Part: WARNING BOX — MALFUNCTIONED (ROTOR RPM)

RPM AND AUDIO DOES NOT COME ON WHEN 12 PERCENT N1 SPLIT.

Part: ROTOR MAST — CORRODED (MAIN ROTOR)

CORROSION IN BORES BEYOND LIMITS. REPLACED MAST ASSY.

Part: SUN GEAR — SPALLED (TRANSMISSION)

TRANSMISSION CAME IN DUE TO METAL IN OIL. REPLACED SUN GEAR.

Part: TORQUEMETER — INOPERATIVE (COCKPIT)

TORQUEMETER NR 2 NEEDLE STAYS AT ZERO WHILE RUNNING.

Part: TORQUEMETER — STICKS (COCKPIT)

TORQUEMETER NR 2 NEEDLE STICKING IN-FLIGHT.

Part: VALVE — FAILED (ENG OIL)

VALVE WILL NOT OPEN. INOPERATIVE.

Part: NOZZLE — CRACKED (1ST STAGE)

ENGINE REMOVED DUE TO OIL STARVATION AND METAL IN OIL. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED BEYOND SERVICEABLE LIMITS ON NR1 NOZZLE TRAILING EDGE VANES. INSTALLED A DALLAS AIRMOTIVE OVERHAULED NR1 NOZZLE.

Part: INDICATOR — FAILED (TRIPLE TACH)

TRIPLE INDICATOR ROTOR NEEDLE READS HIGH. UNIT OUT OF TOLERANCE.

Part: RPM WARNING BOX — INTERMITTENT (ROTOR RPM)

RPM WARN BOX INTERMITTENT OPERATION.

Part: TRANSMISSION — SPALLED (M/R GR BOX)

TRANSMISSION BEVEL GEARS HAVE EXCESSIVE SPALLING ON S/N 2195 AND MINOR ON S/N 2310 T.T. 3392:45 (TOOTH FAILURE) PINION S/N 3142, T.T. 353:20 SPALLING ON TOOTH (ROOT AREA) EXCESSIVE DENTS ON BEARINGS 2 EACH 4638303081, T.T. UNKNOWN AND 1 EACH 4638302025, S/NNR3089, T.T. UNKNOWN AND 1 EACH 4638302023, S/N 2353, T.T. 353:20 AND 1 EACH 4619303085, T.T. UNKNOWN. REPLACED WITH SERVICEABLE PARTS.

Part: INDICATOR — ERROR (TRIPLE TACH)

NR 1 NEEDLE HAS EXCESSIVE FRICTION ERROR.

Part: INDICATOR — STICKS (EXH TEMP)

NEEDLE STICKS AND READS HIGH. SENT TO MASCO FOR INSPECTION AND REPAIR.

Part: INDICATOR — ERROR (COCKPIT TOT)

TOT INDICATOR INCORRECT INDICATION. ERRATIC AND WILL NOT CALIBRATE. TIME SINCE REPAIR 36:50.

Part: INDICATOR — WONT TEST (MAST MOMENT)

MAST MOMENT INDICATOR WONT TEST.

Part: TRANSMITTER — WONT TEST (MAST MOMENT)

TORQUE TRANSMITTER WILL NOT TEST PROPERLY.

Part: TACH GENERATOR — SEIZED SHAFT (ENGINE)

TACH GENERATOR DRIVE SHAFT FROZEN.

Part: BLADE — CRACKED (M/R)

M/R BLADE NOSE AND NECK SHELLS CRACKED.

Part: FUEL CELL — CRACKED (FUEL SYS)

FUEL CELL BLISTERS AND CRACKS AROUND FLANGES.

Part: SET SCREW RING — UNBONDED (SKID)

RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.

Part: SET SCREW RING — UNBONDED (SKID)

RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.

Part: SET SCREW RING — UNBONDED (SKID)

RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.

Part: SET SCREW RING — UNBONDED (SKID)

RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.

Part: BLADE — CRACKED (M/R)

BLADE IS CRACKED. NOSE SHELL CRACKED.

Part: BLADE — CRACKED (M/R)

BLADE IS CRACKED. NOSE AND NECK SHELLS CRACKED. THE TIP CAP IS ALSO UNBONDED.

Part: WARNING BOX — MALFUNCTION (M/R RPM)

RPM WARN COMES ON INTERMITTENTLY. TIME SINCE REPAIR 83:35.

Part: WARNING BOX — MALFUNCTION (ROTOR RPM)

RPM LIGHT FLASHES INTERMITTENTLY.

Part: BEARING — SPALLED (M/R GR BOX)

BEARING EXCESSIVE SPALLING. REPLACED WITH NEW BEARING.

Part: TRANSCEIVER — FAILED (COCKPIT VHF)

TRANSCEIVER WILL NOT RECEIVE; SQUELCH STICKING.

Part: CLUTCH — FAIL INSP (FREEWHEEL)

FAILED 600 HOUR INSPECTION. INNER CAGE WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE CLUTCH.

Part: FUEL PUMP — MALFUNCTION (ENGINE)

FUEL PUMP FAULTY. ALSO CHANGED FILTER

Part: CASE HALVES — CRACKED (COMPRESSOR)

ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED: PLASTIC CRACKED AND LIFTING ON CASE ASSEMBLY. INSTALLED A DALLAS AIRMOTIVE OVERHAULED CASE ASSEMBLY.

Part: GYRO COMPASS — PRECESSES (COCKPIT)

GYRO COMPASS EXCESSIVE PRECESSION.

Part: TRANSCEIVER — DEFECTIVE (COCKPIT ATC)

REPAIR CRACKED FACEPLATE. REPLACED BROKEN FACEPLATE ASSEMBLY. ALSO REPLACED WEAK V101 CAVITY OSCILLATOR BECAUSE OF LOW POWER OUT. ADJUSTED AS NEEDED. BENCH CHECK GOOD.

Part: BLADE — CRACKED (M/R)

M/R BLADE IS CRACKED. (NOSE AND NECK SHELL CRACKED AND SMALL AREAS OF SEPARATION ON THE LEADING EDGE STRIPS.

Part: CELL — LEAKING (AUX TANK)

AFT FUEL CELL LEAKING FUEL. INSTALLED SERVICEABLE FUEL CELL.

Part: STARTER — FAILED (START/GEN NR 2)

PILOT TRIED TO START ENGINE (MAX RPM 13% N1) AND TOT CLIMBED MUCH HIGHER THAN NORMAL. ABORTED START AND TRIED TO START ENGINE AGAIN, ENGINE WOULD NOT SPIN. SHUT #1 ENGINE DOWN. ENGAGED #2 STARTER AGAIN AND ONLY LOUD ARCING NOISE HEARD. REPLACED STARTER GENERATOR AND RETURNED AIRCRAFT TO SERVICE.

Part: TRANSMITTER — DEFECTIVE (OIL PRESS)

#1 ENGINE OIL PRESSURE NEEDLE INDICATES FULL SCALE. REPLACED WITH SERVICEABLE TRANSMITTER.

Part: REGULATOR — FAILED (DC SYS)

PEGS VOLTAGE METER INDICATOR TO TOP END. FOUND Q4 TRANSISTOR BAD AND CIRCUIT BOARD BURNT AROUND R65 RESISTOR. SCRAPPED VOLTAGE REGULATOR.

Part: TRANSMITTER — FAILED (NR 1 ENG OIL)

#1 ENGINE OIL PRESSURE INDICATOR PEGS ON HIGH SIDE IN FLIGHT. REPLACED #1 OIL PRESSURE TRANSMITTER AND RETURNED TO SERVICE.

Part: SHAFT — SCORED (T/R)

SLIDING SLEEVE AREA SCORING AND CORROSION AT BEARING SEAT.

Part: TUBE ASSEMBLY — LOOSE RIVETS (T/R CONTROL)

WHILE INSPECTING OVERHEAD SECTION IN BAGGAGE COMPARTMENT, FOUND BLACK MUD DRIPPING FROM ROOF. MUD WAS COMING FROM LONG TAIL ROTOR CONTROL TUBE END, FROM THREADED FITTING AND ATTACHING RIVETS. FITTING AND RIVETS WERE SLIDING IN TUBE APPROX.1/8". REMOVED AND REPLACED TUBE ASSEMBLY. TAIL ROTOR RIGGING FOUND WITHIN LIMITS.

Part: WHEEL — SULFIDATION (1ST STAGE BLADES)

ENGINE REMOVED DUE TO HIGH CYCLED WHEELS. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: MINOR SULFIDATION ON 1ST STAGE WHEEL BLADES. SCRAPPED 1ST STAGE WHEEL.

Part: BLADE — CRACKED (T/R)

CRACKED ON THRUSTPLATE.

Part: BLADE — CRACKED (T/R)

CRACKED ON THRUSTPLATE.