N36911

Part: FITTING — CRACKED (RT NACELLE) · airframe 39,516 hrs · 39,314 cycles

DURING NDT INSPECTION AS NOTED IN SID 57-10-16, A CRACK WAS DISCOVERED ON THE RIGHT SIDE OF THE RIGHT HAND OUTBOARD NACELLE FITTING. THIS CRACK MEASURES APPROXIMATELY .097 LONG AND IS CONSISTENT WITH OTHER CRACKS FOUND USING THE LIGHTED BORESCOPE INSPECTION TECHNIQUE (TEXTRON MEL 54-02R2) TO SATISFY THE REQUIREMENT OF AD2017-10-09. THIS FITTING WILL BE REPLACED WITH FACTORY NEW PARTS.

Part: CRANKSHAFT — FRACTURED (ENGINE) · airframe 38,094 hrs

PILOT REPORTED DURING CLIMB/CRUISE FLIGHT THE RIGHT HYDRAULIC FLOW LIGHT CAME ON AND RIGHT ENGINE LOST POWER. UPON INITIAL INSPECTION, THE ENGINE WAS FOUND TO BE SEIZED. PISTONS AT CYLINDERS 1-4 WERE FOUND TO BE IN THE TOP DEAD CENTER POSITION. CYLINDER #3 WAS REMOVED AND WE CONFIRMED THE CRANKSHAFT IS FRACTURED AT JOURNAL BETWEEN 1 AND 3. ENGINE WILL BE REPLACED.

Part: FITTING — CRACKED (RT NACELLE) · airframe 36,576 hrs · 32,980 cycles

WHILE CONDUCTING A ROUTINE INSPECTION, A CRACK WAS DISCOVERED IN THE RT INBOARD NACELLE FITTING. THE CRACK WAS FOUND ON THE OUTBOARD SIDE OF THE FITTING JUST FORWARD OF THE SPAR STRAP. THE CRACK WAS APPROXIMATELY 1.208 INCHES IN LENGTH.

Part: FITTING — CRACKED (RT NACELLE) · airframe 36,576 hrs · 32,980 cycles

DURING A ROUTINE INSPECTION, A CRACK WAS DISCOVERED IN THE RT INBOARD NACELLE FITTING. THE CRACK WAS FOUND ON THE OUTBOARD SIDE OF THE FITTING, JUST FORWARD OF THE SPAR STRAP. THE CRACK IS APPROXIMATELY 1.208 INCHES IN LENGTH. OPEN

Part: EXHAUST VALVE — DAMAGED (NR 6 CYLINDER) · airframe 36,443 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION; EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: EXHAUST VALVE — DAMAGED (NR 4 CYLINDER) · airframe 36,443 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION; EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: O-RING — WORN (MASTER CYLINDER) · airframe 35,713 hrs · 31,334 cycles

PILOT REPORTED NO RT BRAKE. INSPECTED & FOUND THE RT MASTER CYLINDER INTERNAL O RING WORN. REPLACED O RING IAW MM CH 32-40-01. OPERATIONALLY CHECKED GOOD.

Part: DIMMER — MALFUNCTIONED (COCKPIT) · airframe 34,371 hrs · 28,305 cycles

SMOKE APPEARED FROM INSTRUMENT PANEL LIGHT, DIMMER ASSEMBLY. R & R DIMMER ASSEMBLY PN 5118424-1.

Part: SPAR CAP — FRACTURED (ZONE 600) · airframe 32,813 hrs

DURING ROUTINE MX, A FRACTURE WAS FOUND IN 1 OF OUR ACFT LOCATED AT THE, RT WING AFT LOWER SPAR CAP, INBD FLAP WELL, AND ADJACENT TO LWR BELL CRANK SUPPORT AT WING STA 113.69.

Part: GYRO — SHORTED (COCKPIT) · airframe 31,826 hrs

CREW REPORTED, WHILE IN CRUISE CONFIGURATION, IFR CONDITIONS, CAPTAINS HEADING INDICATOR FAILED, REMOTE GYRO CIRCUIT BREAKER TRIPPED. EMERGENCY DECLARED, LANDING WAS UNEVENTFUL. MX INSPECTED ACFT, FOUND REMOTE GYRO CONTAMINATED WITH WATER. R & R GYRO, TESTED SYS OK, ACFT RELEASED BACK TO SERVICE.

Part: AXLE — CRACKED (RT MLG) · airframe 31,204 hrs

ON TAXI, CREW REPORTED LOAD "POP" FROM RT GEAR, ACFT BECAME DIFFICULT TO TAXI. MX FOUND RT MAIN GEAR AXLE ASSY CRACKED AT LOWER HALF. R & R AXLE ASSY. RELEASED ACFT BACK TO SERVICE.

Part: GROUND WIRE — BROKEN (DOWNLOCK SWITCH) · airframe 30,532 hrs

ON APPROACH TO PVC FROM BOS, PILOT REPORTED RIGHT MAIN GEAR DOWNLOCK LIGHT DID NOT ILLUMINATE, PERFORMED EMERGENCY GEAR EXTENSION, STILL DID NOT ILLUMINATE.PRESS TO TEST OF LIGHT CHECKED OK. PILOT ELECTED TO DIVERT. DECLARED AN EMERGENCY, LANDED WITHOUT INCIDENT. MAINTENANCE FOUND AND REPAIRED BROKEN GROUND WIRE AT RIGHT MAIN GEAR DOWNLOCK SWITCH. PERFORMED OPERATIONAL CHECK OF LANDING GEAR. SYSTEM CHECKS OK. AIRCRAFT RELEASED BACK TO SERVICE.

Part: TORQUE TUBE — CRACKED (RUDDER PEDALS) · airframe 30,513 hrs

DURING SCHEDULED MAINTENANCE INSPECTION, MAINTENANCE FOUND PILOTS LEFT RUDDER PEDAL TO TORQUE TUBE LINKAGE CRACKED. MAINTENANCE REMOVED AND REPLACED RUDDER TORQUE TUBE. AIRCRAFT RELEASED TO SERVICE.

Part: MASTER SWITCH — UNSERVICEABLE (LT C/B SWITCH P) · airframe 30,067 hrs

CREW REPORTED AVIONIC MASTER SWITCH INOPERATIVE. MX REMOVED AND REPLACED SWITCH AND RETURNED ACFT TO SERVICE

Part: GYRO — MALFUNCTIONED (DIRECTIONAL) · airframe 30,063 hrs

CREW REPORTED HORIZONTAL SITUATION INDICATOR INOPERATIVE IN CLIMB-OUT AT 400 FT. CONTACTED LOCAL TOWER, DECLARED AN EMERGENCY, AND RETURNED WITHOUT INCIDENT. MAINTENANCE INSPECTED AIRCRAFT, REMOVED AND REPLACED REMOTE GYRO. AIRCRAFT RELEASED BACK TO SERVICE.

Part: ACTUATOR — INTERMITTENT (UPLOCK) · airframe 28,309 hrs

NOSE GEAR DOWN AND LOCKED LIGHT CAME ON AND THEN WENT OFF DURING FINAL APPROACH. BLEW GEAR DOWN TESTED GEAR DOWN INDICATION WITH FLAP HANDLE, LANDED. MAINTENANCE FOUND UPLOCK ACTUATOR TO BE BAD REMOVED AND REPLACED ACTUATOR.

Part: CIRCUIT BREAKER — DEFECTIVE (AVIONICS)

CREW REPORTED AVIONICS MASTER SWITCH INOP. MX CHANGED CIRCUIT BREAKER SWITCH.

Part: BARREL — SHEARED (RT MLG)

UPON LANDING, PILOT REPORTED RT MLG COLLAPSED. MECHANIC FOUND RT MLG UPPER BARREL SHEARED ABOVE UPPER TORQUE LINK ATTACH POINT. MECHANIC REMOVED AND REPLACED MLG ASSY, RT PROP, RT ENGINE, C/W MINOR SHEET METAL REPAIRS TO FLAPS, AND REPLACED RT MLG DOOR. INSPECTION OF RUNWAY AT LANDING AREA FOUND MANY POT HOLES AND RUTS.

Part: LE SKIN — CORRODED (WS 119.29-229.7)

CORROSION ON LEADING EDGE OF WING AT TOP AND BOTTOM OF FRONT SPAR AT WS 119.29 THROUGH 229.7. CORROSION AT BOTTOM OF WING JUST AFT OF EXHAUST PIPE ON LEFT AND RIGHT WINGS AT WS 119.29. (W)

Part: LE SKIN — CORRODED (WS 119.29-229.71)

CORROSION LEADING EDGE TO FRONT SPAR RT WING TOP AND BOTTOM AT WS 119.29 THROUGH 229.71. (W)