N104LN

Part: LIGHT — FAILED (CLOCK) · airframe 3,914 hrs · 10,858 cycles

ENROUTE, CLOCK LIGHT BLINKED OFF AND ON THREE TIMES ACCOMPANIED BY LOUD STATIC IN HEADSET, THEN STAYED DARK. SMELLED STRONG ELECTRICAL ODOR. ABORTED FLIGHT AND DIVERTED. LANDED UNEVENTFULLY. MECHANIC ARRIVED AND DISCONNECTED WIRE TO CLOCK LIGHT,

Part: PITCH ROD — LEAKING (TAIL ROTOR) · airframe 2,424 hrs

TEFLON MATERIAL VISIBLE AND COMING OUT AROUND TOP AND BOTTOM CIRCUMFERENCE OF SPHERICAL BEARING OF TAIL ROTOR PITCH CHANGE LINK. DEFECT FOUND DURING ROUTINE AIRWORTHINESS CHECK. MANDATORY REPLACEMENT OF TAIL ROTOR PITCH CHANGE LINK BEFORE FURTHER FLIGHT IAW AD 2011.22.05, PARA (B).

Part: STARTER GEN — DISINTEGRATED (ENGINE)

GENERATOR LIGHT ILLUMINATED JUST AFTER TAKE OFF FOR AN NVG TRAINING FLIGHT, WITH AN ELECTRICAL BURNING/OZONE ODOR IN THE COCKPIT. THE PILOT RETURNED TO BASE AND LANDED WITHOUT FURTHER INCIDENT. ELECTRICAL ODOR DISPERSED BEFORE LANDING. UPON INSPECTION OF THE STARTER/GENERATOR, MAINTENANCE FOUND CARBON BRUSH AND COPPER METAL DEBRIS COVERING THE ENG DECK. THE STARTER/GENERATOR WAS REMOVED AND BRUSH AREA INSPECTED. FOUND THE FAN SHROUD TO BE SPOTWELDED TO A SINGLE BRUSH RETAINING SPRING. REMOVED THE FAN SHROUD AND FOUND ALL BRUSHES HAD BEEN DESTROYED WITH CONNECTING WIRES PULLED AND PROTRUDING THROUGH THE BRUSH GUIDES ON THE COMMUTATOR SIDE. UPON FURTHER INSPECTION, IT WAS FOUND THAT 2 COMMUTATOR SEGMENTS HAD BECOME EJECTED RADIAL INTO THE BRUSH PATH. ONE SEGMENT WAS EJECTED THROUGH THE COOLING OPENINGS AND ONTO THE ENG DECK; THE OTHER WAS LODGED INTO ONE OF THE BRUSH GUIDES WHERE ELECTRICAL ARCING HAD OCCURRED BETWEEN THE GUIDE AND THE HOUSING. ALL FOUR OF THE BRUSH GUIDES WERE DAMAGED IN THE DIRECTION OF ROTATION. A VIBRATION CHECK AT THE ENG FRONT VIBRATION POINT WAS PERFORMED. THE VIBE CHECK WAS WELL WITHIN LIMITS AT 5.5 MM/S. (S)

Part: BEARING — WORN (TAIL ROTOR)

ELASTOMERICS WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT FROM 1 EACH KIT P/N 355A09-1036-01 CORRECTED PROBLEM. FOUR HALF SHELLS EQUALS 1 KIT. (M)

Part: ENGINE — MALFUNCTIONED (WING) · airframe 1,179 hrs

ENGINE REMOVED FOR HIGH OIL CONSUMPTION.REPLACED WITH NEW UNIT. CORRECTED PROBLEM.

Part: POWER SUPPLY — INOPERATIVE (STROBE)

UNIT INOPERATIVE. REPLACED WITH NEW UNIT. CORRECTED PROBLEM.

Part: POWER SUPPLY — INOPERATIVE (EXTERIOR LIGHTS) · airframe 1,053 hrs

POWER SUPPLY BOX UNIT INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: CLOCK — INOPERATIVE (COCKPIT) · airframe 1,052 hrs

UNIT INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: BEARING — DELAMINATED (TAIL ROTOR) · airframe 1,021 hrs

ELASTOMERICS WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT FROM ONE EACH KIT, P/N 355A09-1036-01, CORRECTED PROBLEM. 4 HALF SHELLS EQUALS 1 KIT. (X)

Part: ROD — WORN (PITCH CONTROL)

PITCH CONTROL ROD WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: SERVO — LEAKING (MAIN ROTOR)

SERVO LEAKING BEYOND SERVICEABLE LIMITS. REPALCED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: DISPLAY — INOPERATIVE (COCKPIT)

UNIT INOPERATIVE. NR 1 LANE FAILED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: TRANSMITTER — INOPERATIVE (VOR SYSTEM) · airframe 951 hrs

MAGNETIC AZIMUTH TRANSMITTER UNIT INOPERATIVE. 5 TO 60 DEGREE DEVIATION WHILE ON SAME HEADING IN SLAVE MODE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: LIGHT — INOPERATIVE (AIRSPEED INDICAT)

INTERNAL LIGHTING INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: DISPLAY — INTERMITTENT (COCKPIT) · airframe 804 hrs

VEMD UNIT INOPERATIVE. T4.5 SPLIT BETWEEN FADE AND VEMD CAUSES LFI PAGE TO GO OFF-LINE. INTERMITTENT 20 TO 80 DEGREES. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: COOLER — LEAKING (OIL SYSTEM)

OIL COOLER LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: CONTROL ROD — WORN (T/R PITCH)

PITCH CONTROL ROD WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: ROD — WORN (PITCH CONTROL)

PITCH CONTROL ROD WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)

Part: LINK — WORN (SWASHPLATE)

BUSHING OUT OF ALIGNMENT. SLEEVE FAILS TO FIT PROPERLY IN BOTH ENDS. MFG DEFECT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: SPACER — DAMAGED (SWASHPLATE)

REJECTED NEW WITH LINK SCISSORS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: LINK — WORN (SWASHPLATE)

BUSHING AND SLEEVE SCORED AND WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: SPACER — WORN (SWASHPLATE)

BUSHING AND SLEEVE SCORED AND WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: TRANSMITTER — INOPERATIVE (VOR SYSTEM)

TRANSMITTER UNIT INOPERATIVE. REGRESSES 20 DEGREES. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: SPIDER GEAR — WORN (TAIL ROTOR)

EXCESSIVE PLAY BETWEEN SLIDER AND CONTROL TUBE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: SWITCH — INOPERATIVE (AIR DATA)

SWITCH INOPERATIVE UPON INSTALLATION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: SERVO — CRACKED (TAIL ROTOR)

SUSPECT CRACK OR MACHINE DEFECT ON THE BOTTOM TUBE OF SERVO. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

Part: FUM — INOPERATIVE (ENGINE)

UNIT INOPERATIVE. RED GOVERNOR LIGHT CAME ON AFTER FLIGHT. DISPLAY SYSTEM DID NOT SHOW DEFECT WITH BATTERY POWER OR GROUND RUN (ONLY OCCURS AFTER FLIGHT). FADAC DATA: FAIL 1 0000, FAIL 2 0200, FAULT DIAG. NR 17. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)