N26156

Part: AXLE — CRACKED (RT MLG) · airframe 29,600 hrs · 24,881 cycles

DURING SCHEDULED NDT INSPECTION A CRACK WAS FOUND ON THE RIGHT MAIN LANDING GEAR AXLE. THE LOWER LEG AND AXLE WERE REPLACED WITH NO FURTHER DEFECTS NOTED.

Part: DOOR FRAME — CORRODED (ZONE 100) · airframe 28,928 hrs · 22,913 cycles

DURING MAINTENANCE, CORROSION DAMAGE WAS NOTED UNDERNEATH THE STRIKER PLATE FOR THE UPPER CLAMSHELL DOOR PIN ENGAGEMENT HOLE LOCATED ON THE MAIN CABIN DOOR POST. (F.S. 213.6) THE DEPTH OF THIS CORROSION IN GREATER THAN 25% OF THE THICKNESS OF THE DOOR POST AND WAS NO EASILY VISIBLE WITHOUT REMOVAL OF THE STRIKER PLATE. THIS POST WILL BE REPLACED USING NEW PARTS.

Part: RIB — ELONGATED (ZONE 600) · airframe 28,928 hrs · 22,913 cycles

DURING MAINTENANCE, SEVERAL WORKING FASTENERS WERE NOTED ON THE RIGHT HAND CLOSE OUT RIB OF N26156 AT R.W.S. 106.79. THESE FASTENERS ARE COMMON TO THE AFT TRUNNION SUPPORT PLATE. THESE WORKING FASTENERS RESULTED IN ELONGATION OF THE HOLES THROUGH THE RIB BEYOND LIMITS. THIS RIB WILL BE REPLACED USING NEW PARTS.

Part: FITTING — CRACKED (ZONE 400) · airframe 28,068 hrs · 22,620 cycles

WHILE PERFORMING A RECURRENT NDT INSPECTION (HFEC) TO SATISFY THE REQUIREMENTS OF TEXTRON 57-10-16, A CRACK WAS FOUND ON THE INBOARD SIDE OF THE RIGHT HAND OUTBOARD NACELLE FITTING. THIS CRACK WAS MEASURED AT .055 IN LENGTH. THIS CRACK IS CONSISTENT WITH OTHER'S THAT HAVE BEEN IDENTIFIED USING THE PROCEDURE. THIS FITTING WILL BE REPLACED WITH A FACTORY NEW PART.

Part: PUMP — FAILED (HEATER) · airframe 26,592 hrs · 20,483 cycles

THE PILOT REPORTED A BURNING SMELL IN THE CABIN INFLIGHT WITH THE HEATER TURNED ON AND DISSIPATED WHEN THE HEATER WAS TURNED OFF. MAINTENANCE INSPECTED AND FOUND THE FUEL PUMP DRIVE BROKEN AND REPLACED THE HEATER FUEL PUMP WITH NO FURTHER DEFECTS NOTED.

Part: FITTING — CRACKED (LT NACELLE) · airframe 25,100 hrs · 18,259 cycles

DURING MAINTENANCE TWO CRACKS WERE IDENTIFIED ON THE INBOARD LEG OF THE LEFT HAND OUTBOARD NACELLE FITTING, (P/N: 5292029-23) THESE CRACKS WERE DISCOVERED USING THE LIGHTED BORESCOPE INSPECTION PROCEDURE AS OUTLINED IN MEL-54-02R2 TO SATISFY AD2017-10-09. PLEASE SEE PHOTOS ATTACHED TO THIS SDR FOR ADDITIONAL SUPPORTING DETAILS. THIS FITTING WILL BE REPLACED USING NEW PARTS.

Part: CYLINDER — DAMAGED (NR 3) · airframe 23,859 hrs

PILOT REPORTED LEFT ENGINE VIBRATION DURING FLIGHT. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE NR 3 CYLINDER WITH A COLLAPSED EXHAUST LIFTER, BROKEN VALVE GUIDE AND THE PISTON PIN BUSHING DAMAGED AND CRACKED. THE CYLINDER AND CONNECTING ROD HAS BEEN CHANGED AND OPERATIONALLY CHECKED WITH NO FURTHER DEFECTS NOTED.

Part: CONNECTOR — BURNED (WX RADAR SYS) · airframe 22,072 hrs · 13,957 cycles

PILOT REPORTED AN ELECTRICAL BURNING ODOR IN THE CABIN. MAINTENANCE INSPECTED AND FOUND WEATHER RADAR INDICATOR HAS BURNED INTERNAL CONNECTOR. PULLED AND COLLARED THE CIRCUIT BREAKER.

Part: B-NUT — LOOSE (FUEL SYSTEM) · airframe 21,643 hrs · 13,230 cycles

PILOT REPORTED FUEL SMELL IN CABIN. TIGHTENED UNION JAM NUT & B NUT FOR LINE LEADING INTO RT FUEL TANK, IN RT BOOST PUMP PANEL IAW MM CH 28. LEAK CHECKED GOOD.

Part: SWITCH — FAILED (MASTER) · airframe 18,027 hrs

DURING CRUISE FLIGHT, CREW NOTICED A BURNING ODOR IN COCKPIT AND A SMALL AMOUNT OF HAZE OR SMOKE. DIVERTED AND MADE AN UNSCHEDULED LANDING. ON MX INSPECTION, AVIONICS MASTER SWITCH WAS FOUND DEFECTIVE. SWITCH R & R IAW MM.

Part: DRAG BRACE — CRACKED (NLG) · airframe 17,860 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 15,099 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: MASTER SWITCH — UNSERVICEABLE (COCKPIT)

CREW REPORTED AVIONICS MASTER SWITCH INOP. MAINTENANCE REMOVED AND REPLACED MASTER SWITCH.

Part: LINE — CRACKED (HYD SYSTEM)

PILOT PRE-FLIGHT, HYDRAULIC RESERVOIR LOW. MAINTENANCE PRESSURE CHECKED SYSTEM, FOUND NR 6 PRESSURE LINE CRACKED AT BEND RADIUS.

Part: MASTER SWITCH — INOPERATIVE (LT SWITCH PANEL)

AVIONICS MASTER SWITCH, INOPERATIVE. MAINTENANCE REPLACED SWITCH AND RETURNED THE AIRCRAFT TO SERVICE.