N6992

Part: TRANSMITTER — FAILED (OIL PRESSURE) · airframe 8,429 hrs

NR 1 ENGINE OIL PRESSURE GAUGE PEGGED OUT ON THE HIGH SIDE. MAINTENANCE REPLACED THE ENGINE OIL PRESSURE TRANSMITTER.

Part: CONVERTER — SPLIT (TORQUE) · airframe 7,023 hrs

INTERMITTENT TORQUE SPLITS FROM 1 TO 8 PERCENT. SHOP REPAIR.

Part: SHOULDER BELT — MISINSTALLED (COCKPIT) · airframe 6,974 hrs

SHOULDER STRAP IS INSTALLED INTO THE INERTIA UPSIDE DOWN. IN ORDER FOR THIS SHOULDER STRAP TO BE CLIPPED TO THE LAP BELT, IT NEEDS TO BE ROTATED 180 DEGREES. THIS CAUSES THE SHOULDER BELT TO BE TWISTED OVER THE PASSENGER CHEST. TO BE SENT TO VENDOR.

Part: CONNECTOR — LOOSE (NR 2 ENGINE) · airframe 6,916 hrs

NR 2 ENGINE OIL PRESSURE DROPPED TO ZERO IN FLIGHT. MAINTENANCE FOUND A PIN BACKED OUT OF CONNECTOR TO OIL PRESSURE TRANSMITTER.

Part: SLEEVE — ROUGH (BELLCRANK ASSY)

ROUGH BEARINGS. REPLACED BEARINGS DSP4 AND SLEEVES DUE TO WORN. REPAIRED.

Part: HANGER ASSY — CORRODED (TAIL ROTOR)

RUST ON ADAPTERS. REPLACED BEARING DUE TO SEAL DAMAGED. REPLACED HANGER DUE TO CORROSION. REPLACED SHAFT DUE TO CORROSION. REPAIRED.

Part: BEARING — WORN (BELLCRANK ASSY)

ROUGH BEARINGS. REPLACED BEARING MS276434 AND MS276475 DUE TO WORN. REPAIRED.

Part: HANGER ASSY — CORRODED (TAIL ROTOR)

RUST INSIDE SPLINED ADAPTER; BEARING SEAL DAMAGED; AND HANGER SUPPORT CRACKED ON BOTTOM. REPLACED BEARING DUE TO SEAL DAMAGED. REPLACED HANGER DUE TO CRACKED. REPLACED SHAFT DUE TO CORROSION. REPAIRED.

Part: HANGER ASSY — CRACKED (TAIL ROTOR)

RUST INSIDE SPLINED ADAPTER; BEARING SEAL DAMAGED; AND HANGER SUPPORT CRACKED ON BOTTOM. REPLACED BEARING 222344606-101 DUE TO SEAL DAMAGED. REPLACED HANGER DUE TO CRACKED. REPAIRED.

Part: VALVE — STUCK (FUEL CONTROL) · airframe 6,785 hrs

FUEL CONTROL VALVE IS STUCK IN THE NORMAL MODE.

Part: TRANSCEIVER — MALFUNCTIONED (COCKPIT) · airframe 6,436 hrs

PILOT REPORTED INTERMITTENT TRANSMISSION AND RECEIVE. COULD NOT MAKE CONTACT WITH AIRPORT TOWER BUT COULD MAKE CONTACT WITH OTHER COMM (NR 2). VERY LOUD SIDETONE WHEN TRANSMITTING. ADJUSTED SIDETONE TO SPECS. FOUND UNIT WOULD INTERMITTENTLY STOP RECEIVING. ADJUSTED VCO AND ALIGNED RECEIVER. NO HELP. FOUND WHEN UNIT STOPPED RECEIVING THE UNIT WOULD TRANSMIT FAR OFF FREQUENCY. COULD NOT ADJUST FREQUENCY. ALSO FOUND WHEN UNIT WAS NOT RECEIVING AND TRANSMITTING THAT DISPLAY WOULD GO OUT SOMETIMES. REPLACED I111 MICROCOMPRESSOR IC CHIP. REPAIRED PROBLEM. ADJUSTED C/N SQUELCH, CARRIER SQUELCH, FREQUENCY, MIC GAIN AND SIDETONE. FOUND BROKEN SCREW IN MODULATOR HEATSINK AND COULD NOT DRILL OUT. REPLACED MOD

Part: BEARING — STUCK (M/R PITCH LINK) · airframe 6,297 hrs

M/R PITCH CONTROL LINK BEARING BETWEEN CLEVIS STICKING. SCRAPPED.

Part: TRANSPONDER — FAILED (ATC)

ATC NOT ABLE TO PICK UP OVER 10 MILES OUT.

Part: GENERATOR — FAILED (STARTER/GEN)

STARTER/GENERATOR HAD LOW RESIDUAL VOLTAGE. WOULD NOT COME ON-LINE UNTIL 80 PERCENT NG.

Part: COMPASS — CONTAMINATED (COCKPIT)

COMPASS, AIR BUBBLE IN 10 ERROR.

Part: BATTERY — FAILED (DC SYS)

BATTERY WAS FOUND AT 6 VOLTS ON 3-11-98. BATTERY WAS CHARGED TO 22.5 VOLTS. WHILE DISCONNECTED FROM AIRCRAFT, VOLTAGE DROPPED FROM 22.5 VOLTS TO 18 VOLTS IN ONE HOUR. VOLTAGE WAS MEASURED AT 15.4 VOLTS AFTER 5 HOURS. AIRCRAFT BATTERY WAS INSTALLED NEW AT 4469:05 AIRCRAFT HOURS ON 1-30-98. REPLACED WITH SERVICEABLE AIRCRAFT BATTERY.

Part: ACTUATOR ASSY — WORN (SERVO SYS)

ACTUATOR ASSY WORN BEARINGS.

Part: ALTIMETER — STICKS (COCKPIT)

ALTIMETER HAS EXCESSIVE FRICTION ERROR AND NEEDLE STICKS.

Part: MANIFOLD — LEAKS (ENGINE FUEL)

SUBMITTER STATES EXCESSIVE FUEL MANIFOLD LEAKS OVER THE LAST 18 MONTHS. ALLIED SIGNAL IS IN THE PROCESS OF RELEASING AN ASB LIMITING THE LIFE OF THE FUEL MANIFOLD TUBES. OTHER OPERATORS SUBMITTER CONTACTED ARE HAVING THE SAME PROBLEMS. OMNIFLIGHT HAS GONE TO A POST-FLIGHT CHECK AND A SHIFT-CHANGE CHECK OF THIS MANIFOLD.

Part: BLADE — DAMAGED (M/R)

BLADE TRIMMED ON THE INBOARD LEADING EDGE ABRASION STRIP WITH NO CONTOUR RADIUS.

Part: BLADE — CRACKED (M/R TIP SHOE)

M/R BLADE HAS A CRACK IN THE TIP SHOE.

Part: MANIFOLD — LEAKS (ENGINE FUEL)

SUBMITTER STATES EXCESSIVE FUEL MANIFOLD LEAKS OVER THE LAST 18 MONTHS. ALLIED SIGNAL IS IN THE PROCESS OF RELEASING AN ASB LIMITING THE LIFE OF THE FUEL MANIFOLD TUBES. OTHER OPERATORS SUBMITTER CONTACTED ARE HAVING THE SAME PROBLEMS. OMNIFLIGHT HAS GONE TO A POST-FLIGHT CHECK AND A SHIFT-CHANGE CHECK OF THIS MANIFOLD.

Part: FILTER — METAL CONTAM (ENGINE)

FILTER WAS INSTALLED IN FILTER BOWL WHEN ADDING OIL (OHI MECHANIC SAW METAL INSIDE).

Part: MANIFOLD — LEAKS (ENGINE FUEL)

SUBMITTER STATES EXCESSIVE FUEL MANIFOLD LEAKS OVER THE LAST 18 MONTHS. ALLIED SIGNAL IS IN THE PROCESS OF RELEASING AN ASB LIMITING THE LIFE OF THE FUEL MANIFOLD TUBES. OTHER OPERATORS SUBMITTER CONTACTED ARE HAVING THE SAME PROBLEMS. OMNIFLIGHT HAS GONE TO A POST-FLIGHT CHECK AND A SHIFT-CHANGE CHECK OF THIS MANIFOLD.

Part: BEARING — CRACKED (TURBINE NR 2)

UPON DISASSEMBLY OF POWER SECTION FOR REPAIR, NR 2 INNER BEARING WAS FOUND TO HAVE 11 OF 20 CAGE SEPARATORS CRACKED ON FORWARD SIDE OF AFT 'WINGS'. OHI WO NR 96-894. INSTALLED SERVICEABLE BEARING.

Part: FLEXTURE — DEFECTIVE (M/R XMSN)

FORWARD LOWER BUFFER PAD FELL OFF. REMOVED AND REPLACED.

Part: STRUT ASSY — MISINSTALLED (COWL)

END OF STRUT NOT INSTALLED CORRECTLY. CAUSES STRUT TO BIND IN COWLING. END NEEDS TO BE ROTATED IN THE DIRECTION OF THE ARROW PRINTED ON THE TAPES. REMOVED AND REPLACED.