N139CW

Part: STOP — CRACKED (MAIN ROTOR DROOP) · airframe 5,158 hrs

DURING AN INSPECTION, A CRACK WAS DISCOVERED ON A MAIN ROTOR DROOP STOP.

Part: HYDRAULIC SYSTEM — MALFUNCTIONED · airframe 4,161 hrs

BEFORE LANDING CHECKLIST, TO LAND AND WHEN THE LANDING GEAR HANDLE WENT DOWN, GOT A NR2 SERVO, NR 2 HYD MIN, AND HYD UTIL PRESS CAUTION LIGHTS. THEN WENT TO THE HYD SYNOPTIC PAGE. SAW THE NR 2 HYD FLUID LEVEL GO THROUGH 22 PERCENT AND THEN IT WENT TO ALL AMBER WITH BLACK LIGHTNING BOLTS SHOWING. THE TRSOV AND UTILITY SOV2 WAS SHOWING CLOSED. THE HYD PRESSURE WAS 208 BAR AND TEMP WAS 55. USED THE CAUTION CHECK LIST. HAD A GREEN LIGHT ON THE NOSE GEAR, BUT HAD AMBER LIGHT ON BOTH MAIN GEAR. FLEW BACK TO MX, SAID THAT THE MAINS WERE NOT ALL THE WAY DOWN. SO WE USED THE EMERGENCY DOWN PUSH BUTTON AND BOTH MAINS CAME DOWN ALL THE WAY, SO HAD 3 GREEN LIGHTS. LANDED, UNLOADED THE PASSENGERS THEN SHUTDOWN ACFT.

Part: PRESSURE SWITCH — MALFUNCTIONED (MLG) · airframe 2,668 hrs

NR 2 SERVO CAS ILLUMINATED IN FLIGHT. EMERGENCY CHECK LIST USED. LANDING GEAR WAS LOWERED NORMALLY IAW THE CHECKLIST AND ACFT LANDED UNEVENTFULLY AS SOON AS PRACTICAL. REPLACED NR 2 RT SERVO PRESSURE SWITCH.

Part: WARNING LIGHT — ILLUMINATED · airframe 2,668 hrs

NR 2 SERVO CAS ILLUMINATED IN FLIGHT. EMERGENCY CHECK LIST USED. LANDING GEAR WAS LOWERED NORMALLY IAW THE CHECKLIST AND ACFT LANDED UNEVENTFULLY AS SOON AS PRACTICAL. PROBLEM COULD NOT BE DUPLICATED AND ACFT WAS RETURNED TO SERVICE.

Part: BOLT — SCORED (MAIN ROTOR) · airframe 2,032 hrs

BOLTS ARE SCORED.

Part: BOLT — BROKEN (EXHAUST) · airframe 1,732 hrs

BOLT BROKEN.

Part: BOLT — DAMAGED (MAIN ROTOR) · airframe 1,732 hrs

MECHANICAL DAMAGE BEYOND LIMITS.

Part: FIRESEAL — TORN (ENGINE) · airframe 1,732 hrs

FIRESEAL, TORN AND DETERIORATED.

Part: ATTACH FITTING — CRACKED (TAILBOOM) · airframe 567 hrs

CRACKS FOUND IN FITTING AT UPPER LT TAILBOOM ATTACHMENT POINT RADIATING FROM LOCK FASTENERS.

Part: TIRE — WORN (LANDING GEAR) · airframe 477 hrs

TIRE EXCESSIVELY WORN DOWN TO CORDS, REPLACED BOTH MAIN TIRES.

Part: BONDING STRAP — BROKEN (TAIL ROTOR) · airframe 477 hrs

TAIL ROTOR BONDING STRAP BROKE OFF IN FLIGHT, REPLACED STRAP.

Part: SCISSORS — DAMAGED (TAIL ROTOR HEAD) · airframe 477 hrs

DAMAGED TO SCISSORS FROM CONTACT OF LONG COUPLING, REPLACED SCISSORS.

Part: SCISSORS — DAMAGED (TAIL ROTOR) · airframe 477 hrs

DAMAGED TO SCISSORS FROM CONTACT OF LONG COUPLING, REPLACED SCISSORS.

Part: FIREWALL — CRACKED (NACELLE) · airframe 477 hrs

FOUND FIREWALL CRACKED, REPLACED FIREWALL.

Part: COUPLING — WORN (TAIL ROTOR) · airframe 477 hrs

GROOVE WORN IN SHANK, REPLACED COUPLING.

Part: BUSHING — GALLED (MAIN ROTOR) · airframe 477 hrs

DURING 300 HOUR INSPECTION ROTATING SCISSORS HAD EXCESSIVE PLAY AND WHEN ASSY WAS DISSASSEMBLED THE BUSHINGS WERE GALLED.

Part: SCISSORS — LOOSE (MAIN ROTOR) · airframe 477 hrs

DURING 300 HOUR INSPECTION ROTATING SCISSORS HAD EXCESSIVE PLAY AND WHEN ASSY WAS DISASSEMBLED THE BUSHINGS WERE GALLED, REPLACED BUSHINGS.

Part: SERVO — WARNING MESSAGE (NR 2) · airframe 400 hrs

IN CRUISE, FLIGHT AT 6500 FT, THE NR 2 SERVO CAUTION LIGHT CAME ON. OPENED THE SYNOPTIC PAGE AND FOUND ALL PRESSURE AND TEMPS NORMAL. HOWEVER THE 4 SERVO LIGHTS WERE YELLOW. FOLLOWED THE EMERGENCY PROCEDURES CHECKLIST AND TURNED AROUND. AFTER A FEW MINUTES THE CAUTION LIGHT BEGAN TO GO OFF AND ON AND AFTER A MINUTE OF THAT IT WENT OUT AND STAYED OUT. RETURNED FOR MAINTENANCE TO CHECK THE PROBLEM.

Part: FIREWALL — CRACKED (NACELLE) · airframe 299 hrs

FOUND FIREWALL CRACKED, REPLACED FIREWALL.

Part: EXHAUST PIPE — CRACKED (ENGINE) · airframe 232 hrs · 531 cycles

EXHAUST NOZZLE HAD 12 INCH CRACK ALONG TACK WELDED SEAM NEAR AFT END OF TAIL PIPE. REPLACED WITH SERVICEABLE EXHAUST NOZZLE.

Part: HOSE — MISINSTALLED (EMERGENCY FLOAT) · airframe 182 hrs

LINES WERE INSTALLED WRONG, CAUSING THEM TO BE KINKED.

Part: HOSE — MISINSTALLED (EMERGENCY FLOAT) · airframe 182 hrs

LINES WERE INSTALLED WRONG, CAUSING THEM TO BE KINKED.