N678JG

Part: FITTING — CORRODED (ZONE 600) · airframe 34,398 hrs · 19,869 cycles

DURING SCHEDULED AGING AIRCRAFT INSPECTION TO SATISFY THE REQUIREMENTS OF FAR 135.422 (AGING AIRCRAFT INSPECTION AND RECORDS REVIEW), A SMALL AREA OF CORROSION WAS IDENTIFIED ON THE RIGHT HAND UPPER AFT WING FITTING. (OEM: 0822550-46) THIS CORROSION MEASURES APPROXIMATELY .571 LONG WITH AN APPROXIMATE DEPTH OF .015. IT IS ALSO CONSISTENT WITH OTHER CORROSION SPOTS VISUALLY IDENTIFIED ON WING FITTINGS IN THE PAST. THIS FITTING WILL BE REPLACED USING NEW PARTS.

Part: CROSSBEAM — CRACKED (ZONE 400) · airframe 33,938 hrs · 19,250 cycles

DURING MAINTENANCE A CRACK WAS VISUALLY IDENTIFIED ON THE RIGHT HAND CROSSOVER BEAM (OEM P/N: 5654104-12) OF N678JG. THIS CRACK IS LOCATED ON THE AFT FACE OF THE BEAM, COMMON TO THE TOP OUTBOARD BOLT HOLE FOR THE TURBOCHARGER SUPPORT BRACKET. THIS CRACK MEASURES APPROXIMATELY .650 INCHES LONG TRAVELING LONGITUDINALLY ACROSS THE FASTENER LOCATION. IT IS CONSISTENT WITH OTHER CRACKS VISUALLY IDENTIFIED IN THIS AREA. THIS BEAM WILL BE REMOVED AND REPLACED.

Part: RIB — CRACKED (RT WING) · airframe 31,991 hrs · 16,521 cycles

DURING MAINTENANCE A CRACK WAS DISCOVERED ON THE LEFT HAND CLOSEOUT RIB (P/N: 5122115-55) AT L.W.S. 106.79. THIS CRACK ORIGINATES FROM A HOLE IN THE FORWARD ROW OF FASTENERS COMMON TO THE AFT MAIN LANDING GEAR TRUNNION SUPPORT PLATE AND TRAVELS FORWARD AN APPROXIMATE LENGTH OF 1.70 INCHES. THIS RIB WILL BE REPLACED USING NEW PARTS.

Part: EXHAUST VALVE — DAMAGED (NR 2 CYLINDER) · airframe 27,594 hrs

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

Part: EXHAUST VALVE — DAMAGED (NR 4 CYLINDER) · airframe 27,354 hrs

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

Part: PUMP — LEAKING (HEATER) · airframe 27,068 hrs · 10,398 cycles

PILOT REPORTED STRONG FUEL ODOR SHORTLY AFTER FINISHING CROSS FEED. MAINTENANCE REMOVED AND REPLACED THE HEATER FUEL PUMP, ROOT CAUSE DETAIL TO BE PROVIDED AFTER TEARDOWN INSPECTION.

Part: SCREW — DIRTY (ELEVATOR TRIM) · airframe 26,944 hrs · 10,207 cycles

ELEVATOR TRIM BINDS IN FLIGHT. REMOVED, INSPECTED, CLEANED, LUBED & REINSTALLED ELEVATOR TRIM ACTUATOR SCREW IAW MM CH 27-30-02. OPERATIONS CHECKED GOOD.

Part: NUT — FRACTURED (ENGINE)

DURING ROUTINE INSPECTION, A THRU-BOLT NUT, TWELVE POINT PN 65254, WAS FOUND FRACTURED & LAYING IN THE BOTTOM OF THE ENG COWLING. THERE WERE NO SIGNS OF CORROSION ON THE NUT. THE ENG WAS REMOVED TO BE DISASSEMBLED, INSPECTED & OVERHAULED. THE NUT WAS RETURNED TO THE ENG MFG FOR FURTHER EXAMINATION.

Part: MASTER CYLINDER — LOW (BRAKE SYSTEM) · airframe 26,183 hrs · 9,101 cycles

PILOT REPORTED RT BRAKE SOFT & NO BRAKING ACTION. INSPECTED THE RT BRAKE SYS. SERVICED RT BRAKE MASTER CYLINDER WITH HYD FLUID. OPERATIONALLY CHECKED GOOD.

Part: MASTER CYLINDER — MALFUNCTIONED (BRAKE SYSTEM) · airframe 25,478 hrs · 8,096 cycles

PILOT REPORTED RT MAIN BRAKE PEDAL GOES TO THE FLOOR. SERVICED THE BRAKE MASTER CYLINDERS WITH NO FURTHER DEFECTS NOTED.

Part: DRAG BRACE — CRACKED (NLG) · airframe 22,088 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 20,059 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.