N587AL

Part: MOUNT — CRACKED (ENGINE) · airframe 15,612 hrs

FOUND CRACKING OF FWD FLANGE OF REAR SUPPORT.

Part: BLEED AIR SYS — SMOKE (ENGINE) · airframe 15,612 hrs

IN CRUISE FLIGHT, FRONT SEAT PASSENGER ALERTED PILOT AN ODOR OF SOMETHING BURNING THEN SAW SMOKE BY HIS FEET (HEATER VENT AREA). PILOT TURNED OFF HEATER AND RETURNED TO BASE. ACFT EQUIPPED WITH ENGINE BLEED AIR HEATER. SUSPECTING AN ENGINE INTERNAL SEAL FAILURE, MX REMOVED ENGINE AND SENT TO ENGINE SHOP. NO FURTHER DETAILS AT THIS TIME.

Part: HOSE — LEAKING (HYD SYSTEM)

AT CRUISE FLIGHT AT 2750 FT, HEADING NORTH NORTHEAST, HYDRAULIC CAUTION LIGHT ILLUMINATED AND CONTROLS BECAME STIFF. MAINTENANCE FOUND THE CASE DRAIN LINE FLEX HOSE AT HYDRAULIC PUMP WAS TIGHT BUT LEAKING OIL, REMOVED AND REPLACED HYDRAULIC PUMP FOR INTERAL LEAKING. (K)

Part: PITCH LINK — WORN (MAIN ROTOR) · airframe 7,901 hrs

AXIAL PLAY BEYOND MAX AND RATCHETY. REPLACED WITH NEW BY FIELD MAINTENANCE.

Part: MANIFOLD — DAMAGED (XMSN OIL FILTER)

AFTER LANDING AT SS69 PASSENGER INFORMED THE PILOT THERE WAS OIL ALL ALONG THE SIDE OF THE AIRCRAFT. SHUTDOWN AND CHECKED THE TRANSMISSION OIL LEVEL AND THE SIGHT GLASS WAS EMPTY. MAINTENANCE REMOVED AND REPLACED THE MAIN TRANSMISSION EXTERNAL OIL FILTER MANIFOLD ASSEMBLY BECAUSE TEMPERATURE BULB INSERT WAS DAMAGED CAUSING LEAK. GROUND RUN AND LEAK CHECK WAS GOOD, AIRCAFT RETURNED TO SERVICE. (K)

Part: DISC PACK — CRACKED (TAIL ROTOR) · airframe 7,238 hrs

FOUND CRACKED DISC. REPLACED W/NEW PART BY FIELD MAINT.

Part: GEAR — SPALLED (GEARBOX) · airframe 6,178 hrs

REMOVED GEAR FOR EXCESSIVE SPALLING ON GEAR TEETH.

Part: GEAR — SPALLED (GEARBOX) · airframe 6,178 hrs

REMOVED GEAR FOR EXCESSIVE SPALLING ON GEAR TEETH. REMOVED FOR WARRANTY CREDIT.

Part: BEARING — WORN (UNIVERSAL) · airframe 5,819 hrs

FOUND UNIVERSAL BEARING WORN AND ROUGH.

Part: SHAFT — WORN (FREEWHEEL UNIT)

SHAFT ON FREEWHEEL UNIT HAS WORN SPLINES BEYOND LIMITS.

Part: COWLING — CORRODED (AIR INLET COWL)

REBUILD. EXCESSIVE CORROSION, CRACKING AND WEAR ON COWLING AND INTAKE SHELF.

Part: TURBINE WHEEL — CORRODED (ENGINE)

TURBINE WAS RECEIVED IN SHOP FOR LOW POWER. FOUND AFTER REMOVAL OF COMBUSTION SECTION FOUND SULPHADATION ON 1ST STAGE WHEEL.

Part: BEARING — FAILED (T/R DRIVESHAFT)

DURING PREVENTATIVE MAINTENANCE INSPECTION, BEARING FAILED COMPLETELY, PART SCRAPPED.

Part: RING — CORRODED (MAIN ROTOR)

DURING PHASE INSPECTION. CORROSION BEYOND MAXIMUM LIMITS.

Part: BEARING — DISINTEGRATED (TAIL ROTOR)

DURING DAILY, BEARING ON THE SHAFT WAS DISINTEGRATED DUE TO LOSS OF GREASE. BEARING WAS SCRAPPED AND C/W ASB 407-01-44. (M)

Part: HOUSING — CRACKED (TAIL ROTOR) · airframe 2,808 hrs

DURING DAILY INSPECTION, FOUND OCB HOUSING CRACKED DUE TO VIBRATION. (X)

Part: DUCT — CRACKED (OIL COOLER) · airframe 2,808 hrs

DURING DAILY INSPECTION, FOUND A CRACK IN THE CORNER. (X)

Part: SLEEVE — BINDING (BYPASS SPOOL) · airframe 2,780 hrs

PILOT REPORTED AN INTERMITTENT BIND. INTERMITTENT BIND IN SERVO ACTUATOR. (X)

Part: DUCT — CRACKED (OIL COOLER) · airframe 2,536 hrs

UPON DAILY INSPECTION, CRACKS IN CORNERS CAUSED BY INHERENT VIBRATIONS. (X)

Part: CROSSTUBE — CORRODED (MLG)

CORROSION FOUND UNDER SUPPORT AND CLAMPS DUE POSSIBLY TO IMPROPER TREATMENT DURING MANUFACTURING AND/OR MATERIAL DEFECT.

Part: BOLT — LOOSE (VERTICAL FIN)

DURING DAILY SERVICE CHECK, FOUND UPPER AND LOWER AFT BOLTS TO HAVE LOST TORQUE.