N4652N

Part: EXHAUST VALVE — DAMAGED (NR 4 CYLINDER) · airframe 26,372 hrs

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

Part: EXHAUST VALVE — DAMAGED (NR 6 CYLINDER) · airframe 26,372 hrs

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

Part: EXHAUST PIPE — CRACKED (RT ENGINE) · airframe 26,350 hrs · 33,424 cycles

PILOT REPORTED ON PREFLIGHT: RIGHT ENGINE MAIN EXHAUST STACK LOOSE. UPON INSPECTION MAINTENANCE FOUND THE RIGHT OVERBOARD EXHAUST PIPE CRACKED. REPLACED OVERBOARD EXHAUST PIPE.

Part: EXHAUST VALVE — DAMAGED (NR 2 CYLINDER) · airframe 26,191 hrs

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

Part: EXHAUST VALVE — DAMAGED (NR 4 CYLINDER) · airframe 26,191 hrs

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

Part: EXHAUST VALVE — DAMAGED (NR 3 CYLINDER) · airframe 26,191 hrs

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

Part: UNKNOWN — ODOR (COCKPIT) · airframe 25,867 hrs · 32,664 cycles

PILOT DETECTED SMELL OF BURNING RUBBER IN FIRST OFFICERS FLOORBOARD AREA. PERFORMED A DETAILED VISUAL INSPECTION ON THE FOLLOWING ACFT AREAS & COMPONENTS, MLG BRAKES, MLG WHEELS ASSEMBLY, LT & RT WW, NLG WHEEL ASSEMBLY & WW, COCKPIT AREA, CONTROL PEDESTAL, BOTH LT & RT SIDE CONSOLE PANELS & ALSO PERFORMED AN ACFT ENG RUN UP. NO RUBBER BURNING SMELL FOUND AT THIS TIME & ALSO FOUND ACFT RUN UP NORMAL AT THIS TIME.

Part: SEALANT — FAULTY (FUEL CELL) · airframe 24,864 hrs · 30,360 cycles

PILOT REPORTED SMELL OF FUEL IS CONSTANT WITHIN CABIN. MX IS IN PROCESS OF RESEALING FAULTY SEALANT IN THE WING TANKS.

Part: BEAM — CRACKED (RT NACELLE) · airframe 24,541 hrs

DURING VISUAL INSPECTION OF NACELLE STRUCTURE AT TURBOCHARGER REMOVAL FOR OTHER MAINTENANCE, THE RT NACELLE CROSSOVER BEAM WAS FOUND TO BE CRACKED AT TURBOCHARGER MOUNT BRACKET ATTACH HOLE AFT SIDE OF BEAM. CORRECTIVE ACTION WILL BE TO R & R BEAM WITH NEW OEM PART. A SUPPLEMENT ILLUSTRATING LOCATION & EXTENT OF CRACK HAS BEEN PROVIDED WITH THIS REPORT.

Part: WEB — CRACKED (FUSELAGE) · airframe 24,541 hrs

DURING SCHEDULED INSPECTION, MULTIPLE WEB FLANGE CRACKS WERE FOUND AT AFT FUSELAGE CARRY THROUGH SPAR ASSEMBLY PN 5211173-2 AT CTR UPPER SECTION FWD & AFT WEBS. THIS DAMAGE AREA DIRECTLY CORRESPONDS TO CTR CABIN FLOORBOARD AREA & IS PRONE TO DAMAGE AS PAXS & CREWS WALK BACK & FORTH THROUGH CABIN AREA. THIS DAMAGE WILL BE REPAIRED IAW WITH REPAIR DEFINITION SUPPLIED & SUBSTANTIATED BY DER FIRM. A SUPPLEMENT TO THIS SDR HAS BEEN SUBMITTED TO FURTHER ILLUSTRATE DAMAGE POINTS.

Part: SPAR CAP — CORRODED (RT WING) · airframe 24,542 hrs

DURING SCHEDULED INSPECTION, AREAS OF EXFOLIATING CORROSION WERE FOUND AT RT WING LWR SPAR CAP STRAP OEM PN 5292029-2 PREVIOUSLY INSTALLED TO SATISFY REQUIREMENT OF AD2005-12-13 CONCURRENT WITH MEB02-5. THE CORRECTIVE ACTION WILL BE TO PERFORM A DETAILED INSPECTION OF THE AREA & TO REPLACE RT LWR WING SPAR CAP STRAP WITH NEW OEM PART IAW CURRENT REVISION OF SK402-47. A SUPPLEMENT ILLUSTRATING EXTENT OF CORROSION DAMAGE HAS BEEN SUBMITTED WITH THIS REPORT.

Part: DRAG BRACE — CRACKED (NLG) · airframe 2,057 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE, OEM PN 5142002-5, WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE BEYOND LIMIT ALLOWABLE. THIS UNIT HAS BEEN SCRAPPED & A REPLACEMENT DRAG BRACE HAS BEEN INSTALLED IN ACFT.

Part: DRAG BRACE — CRACKED (NLG) · airframe 22,781 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE, PN 5142002-5 WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE BEYOND LIMIT ALLOWABLE OF MEB91-11R1. THIS UNIT HAS BEEN SCRAPPED & A REPLACEMENT DRAG BRACE HAS BEEN INSTALLED IN ACFT.

Part: ENGINE — POWER LOSS (RIGHT) · airframe 22,291 hrs

RT ENGINE LOST POWER, VIBRATED SUDDENLY. INSPECTED ENGINE, CHECKED PARAMETERS, PERFORMED COMPRESSION CHECK, ADJUSTED IDLE FUEL MIXTURE, CHECKED RT WING TANK SUMP FOR WATER, PERFORMED RUN UP, COULD NOT DUPLICATE, FCF CHECKS GOOD.

Part: DRAG BRACE — CRACKED (NLG) · airframe 21,260 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE, PN 5142002-5, WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE BEYOND LIMIT ALLOWABLE OF MEB91-11R1. THIS UNIT HAS BEEN SCRAPPED & A REPLACEMENT DRAG BRACE HAS BEEN INSTALLED IN ACFT.

Part: DRAG BRACE — CRACKED (NLG) · airframe 20,630 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE OEM PN 5142002-5 WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE WITHIN ALLOWABLE LIMIT. THIS UNIT HAS BEEN REPAIRED IAW PROCEDURE OUTLINED IN MEB941-11R1 & RETURNED TO SERVICE.

Part: TRUNNION — SHEARED (MLG) · airframe 19,554 hrs

CREW REPORTED, RT MLG SHEERED OFF ON LANDING ROLL. MX FOUND RT MLG UPPER BARREL AND TRUNNION ASSY SHEARED JUST BELOW MLG ACTUATOR ATTACH POINT. MX REMOVED AND REPLACED RT MLG ASSY, RT PROPELLER, RT ENG, RT SIDE INBD AND OTBD FLAP PANEL ASSEMBIES, AND RT LANDING LIGHT ASSY.

Part: SKIN — DEBONDED (AILERON) · airframe 17,623 hrs

ON TAXI IN, CREW NOTICED DEBONDING HAD TAKEN PLACE ON RT AILERON UPPER IB SKIN. THE DISPLACEMENT OF SKIN DID NOT AFFECT THE FLIGHT CHARACTERISTICS OF THE AIRCRAFT AS NOTED BY THE CREW. MX REMOVED AND REPLACED AILERON, DISPENSED AILERON FOR REPAIR.

Part: ANGLE — SEPARATED (AILERON)

COULD NOT MOVE AILERONS. 90 PERCENT ANGLE, USED TO PREVENT OIL CANNING, BONDED INSIDE AILERON, BROKE LOOSE AND WORKED ITS WAY DOWN TRAILING EDGE OF AILERON AND INTO FLAP TRAILING EDGE, PREVENTING AILERONS FROM MOVING. 90 PERCENT ANGLE IS 8 INCHES LONG AND .3750 WIDE, .016 THICK. AILERON WAS REPLACED.

Part: TIRE — UNSERVICEABLE (LEFT MAIN)

CREW REPORTED UNUSUAL NOISE ON TAXI. FOUND CHUNK OF AFT TIRE MISSING. MAINTENANCE DISPATCHED TO CHANGE TIRE. FOUND LARGE PORTION OF RECAP HAD SEPARATED FROM CORE TIRE. MAINTENANCE REMOVED AND REPLACED TIRE AND RELEASED AIRCRAFT BACK INTO SERVICE. (X)