N573QS

Part: NONE — NO DISCREPANCY (NONE) · airframe 13,576 hrs · 10,379 cycles

DAMAGE INSPECTION: SEVERE TURBULENCE WAS ENCOUNTER AT ALTITUDE. CW DAMAGE INSPECTION: DUE TO SEVERE TURBULENCE BEING ENCOUNTER AT ALTITUDE. IAW MM 05-50-00 NO DAMAGE NOTED AT THIS TIME.

Part: LAMP — INOPERATIVE (READING LIGHT) · airframe 13,456 hrs · 10,290 cycles

CABIN EMERG LIGHT: SEAT 7 READING LIGHT (PART OF EMER LIGHTING SYSTEM) IS INOP. ATTEMPTED TO MANUALLY TURN READING LIGHT ON WITHOUT SUCCESS. CORRECTIVE ACTION: REMOVED AND REPLACED LED LAMP WITH NEW IAW CE560XL AMM 33-20-02. OPS CHECK GOOD PER CE560XL AMM 33-50-00.

Part: SKIN PANEL — CORRODED (ZONE 100) · airframe 13,248 hrs · 10,141 cycles

DURING REMOVAL OF PANEL 163AC, FOUND PANEL TO BE CORRODED. PERFORMED AN EDDY CURRENT INSPECTION ON A BLENDED AREA LOCATED ON PANEL 163AC, FOR THE PRESENCE OF CRACKS AND CORROSION, IAW THE CESSNA 560XL NDTM, PART 6, 20-00-02. NO CRACKS OR CORROSION NOTED AT THE TIME OF THIS INSPECTION. PERFORMED AN ULTRASONIC THICKNESS INSPECTION IAW THE CESSNA 560XL NDTM, PART 4, 20-00-01. THE REMAINING THICKNESS WAS MAPPED ON THE SURFACE OF THE BLENDED AREA. COMPLIED WITH NETJETS RFTS-112800 N573QS (560-5827) PANEL 163AC CORROSION REV 0. DATED 27JAN25.

Part: SHROUD — CORRODED (TOILET) · corrosion level 2 · airframe 12,891 hrs · 9,890 cycles

CORROSION ON THE UNDERSIDE OF THE TOILET SHROUD ASSEMBLY. COMPLIED WITH RFTS-110676 (560-5827) TOILET SEAT SHROUD CORROSION REPAIR. PER. NETJETS RFTS-110676 REV.0, DATED 29APR24.

Part: STRAKE — CORRODED (FUSELAGE AFT) · corrosion level 2 · airframe 12,891 hrs · 9,890 cycles

PERFORM LH STRAKE LEADING EDGE AND TRAILING EDGE CAP REPAIR. PERFORMED DOUBLER REPAIRS TO LH STRAKE LEADING EDGE AND TRAILING EDGE WEDGE FITTING. ALL WORK WAS ACCOMPLISHED IN ACCORDANCE WITH NETJETS RFTS-110617 REV. 0 N573QS (560-5827) LH STRAKE CORROSION DATED 25APR2024. THIS IS CONSIDERED A MINOR REPAIR. PERFORM RH STRAKE TRAILING EDGE CAP REPAIR. PERFORMED DOUBLER REPAIR TO RH STRAKE TRAILING EDGE WEDGE FITTING. ALL WORK WAS ACCOMPLISHED IN ACCORDANCE WITH NETJETS RFTS-110618 REV. 0 N573QS (560-5827) LH STRAKE CORROSION DATED 25APR2024. THIS IS CONSIDERED A MINOR REPAIR.

Part: SIGN — INOPERATIVE (LAVATORY) · airframe 12,588 hrs · 9,663 cycles

LIGHT ON EMERGENCY EXIT SIGN ABOVE THE LAVATORY SEAT IS BURNT OUT. REMOVED AND REPLACED THE ESCAPE HATCH DOOR PASSENGER SERVICE UNIT EMERGENCY EXIT SIGN ASSEMBLY. INSTALLED A CUSTOMER SUPPLIED NEW ASSEMBLY. PERFORMED OPS CHECKS WITH NO DISCREPANCIES. WORK PERFORMED IAW AMM SECTION 33-50-02

Part: NONE — NONE · airframe 11,054 hrs · 8,539 cycles

A CRACK IN THE MAIN ENTRY DOOR FRAME UNDER THE AFT SUPPORT ROD MOUNT WAS FOUND DURING 600 HOUR INSPECTION. REPAIRED CRACK ON MAIN ENTRY DOOR AFT FRAME IN ACCORDANCE WITH AEROSPACE QUALITY RESEARCH AND DEVELOPMENT MRO ERO-971217 DATED MARCH 21, 2022 APPROVED BY FAA FORM 8110-3 (DERT-833246-CE) DATED MARCH 21, 2022.

Part: PIN — LACK OF LUBE (PAX DOOR) · airframe 10,462 hrs · 8,124 cycles

MAIN DOOR: MAIN CABIN DOOR IS VERY HARD TO OPEN. // SIGNOFF// OPS CHECKED MAIN CABIN DOOR AND DOOR PERFORMS WITHOUT MECHANICAL DEFECTS BUT OPERATION IS STICKY. CLEANED AND LUBRICATED DOOR PINS WITH MOLYKOTE G-N AND PERFORMED OPERATIONAL CHECKS WITH NO FURTHER DEFECTS NOTED REF. CESSNA MODEL 560XL AMM 12-20·52.

Part: UPLOCK ACTUATOR — FAULTY (LT MLG) · airframe 8,518 hrs · 6,670 cycles

LEFT MLG LANDING GEAR RETRACTION DID NOT RETRACT - UPON ROTATION THE GEAR UNSAFE LIGHT ILLUMINATED. ALL GREEN LIGHTS WERE OUT, HYD PRESS ON AND STAB MISCOMPARE AND MASTER CAUTION ON. CHECKLIST DROVE US TO REMOVE POWER FROM THE HYDRO CONTROL CB WHICH RESULTED IN A LOUD NOISE AND THUD AND THE LEFT MAIN NOW SHOWED DOWN AND LOCKED. WE CONTINUED CHECKLISTS FOR MANUAL EXTENSION AS DIRECTED AND ACHIEVED A POSITIVE DOWN LOCK OF ALL THREE MAIN GEAR. AFTER RE-ENERGIZING THE HYDRO CONTROL CB ALL OTHER SYSTEMS OPERATED NORMALLY. **SUPPLEMENTAL INFORMATION: REMOVED & REPLACED LT UPLOCK HOOK, UPLOCK SWITCH, AND UPLOCK ACTUATOR IAW 32-30-05.

Part: UPLOCK — INOPERATIVE (MLG) · airframe 8,473 hrs · 6,636 cycles

ALL LANDING GEAR RETRACTION DID NOT RETRACT - AFTER GEAR RETRACTION, THE GEAR UNLOCK LIGHT REMAINED ILLUMINATED. QRH CHECKLIST WAS ACCOMPLISHED. ADDITIONAL INFO...SQ 47339: JACKED AIRCRAFT. HOOKED HYDRAULIC MULE. PERFORMED GEAR SWINGS. NOTED NO DEFECTS WITH GEAR INDICATION LIGHTS. COLD SOAKED EACH SWITCH ONE AT A TIME WHILE SWINGING GEAR. NOTED NO DEFECTS WITH GEAR INDICATION LIGHTS. DISCONNECTED EACH EACH UPLOCK SWITCH WHILE TESTING EACH CIRCUIT. NOTED NO DEFECTS WITH LH MLG UPLOCK SWITCH OR NLG UPLOCK SWITCH. NOTED RH MLG UPLOCK SWITCH TO HAVE VARYING AND AT TIMES HIGH RESISTANCE WHILE TRIGGERING SWITCH. UPLOCK SWITCH ORDERED. REMOVED RH MLG UPLOCK SWITCH. AVIONICS TO BUILD UP NEW ASSEMBLY FOR INSTALL. FABRICATED RH MLG UPLOCK HARNESS 6648104-13 / RJ67134 USING NEW UPLOCK SWITCH ASSEMBLY PRT#65-430087 AND EXISTING P1 CONNECTOR PRT#MS27497T10F98S IAW CESSNA CITATION STANDARD PRACTICES MANUAL CHAPTER 20-30-15 WIRING AND RESISTER MAINTENANCE PRACTICES AND REFERENCING CESSNA 560XL WIRE DIAGRAM MANUAL 32-30-01-01 FIGURE 01. INSTALLED NEW UPLOCK SWITCH ASSEMBLY AND ADJUSTED IAW CE 560XL MM 32-61-00-2. MLG SWINGS COMPLETED AND OPERATIONAL CHECK IS GOOD. VERIFIED SWITCH INSTALL AND OPERATIONAL CHECK. SERVICED HYDRAULICS AND DISCONNECTED MULE. DOWN JACKED AIRCRAFT.

Part: CONNECTOR — LOOSE (NLG) · airframe 8,452 hrs · 6,621 cycles

RED GEAR ANNUNCIATOR REMAINED ON AFTER GEAR RETRACTION CAUSING THE HYD SYSTEM TO REMAIN PRESSURIZED. STAB MIS COMP ANNUNCIATION ILLUMINATED SHORTLY AFTER. AFTER PULLING THE HYD CONTROL CB "PER XLS QRH" THE NOSE AND LEFT MAIN GEAR EXTENDED. ALL HYDRAULIC SYSTEMS OPERATED NORMALLY. SUPPLEMENTAL INFORMATION: FOUND NLG UPLOCK CANNON PLUG LOOSE. TIGHTENED AND SAFTIED AS REQUIRED. PERFORMED SEVERAL GEAR SWINGS IAW CE-560XL M/M 29-11-00. OPS CHK GOOD.

Part: TORQUE TUBE — CORRODED (LT ELEVATOR) · airframe 8,114 hrs · 6,351 cycles

LEFT ELEVATOR TORQUE TUBE WAS CORRODED.

Part: ENGINE — FAILED (RIGHT) · airframe 6,102 hrs · 4,797 cycles

CLIMBING OUT THROUGH 14000 FT, RT OIL PRESS ANNUNCIATOR ILLUMINATED & THE OIL PRESS INDICATION WENT TO ZERO. RETARDED THE THROTTLE & PERFORMED A PRECAUTIONARY ENG SHUTDOWN. LANDED UNEVENTFULLY. ON POST FLIGHT OIL DRIPPING FROM COWLING. SOME OIL STILL IN SIGHT GLASS. REMOVED NR 2 ENGINE IN UNSERVICEABLE CONDITION DUE TO LOSS OF OIL PRESSURE IAW AMM 71-00-00 AND EMM 71-00-00. INSTALLED A REPAIRED SERVICEABLE NR 2 ENGINE IAW AMM 71-00-00 AND EMM 71-00-00. PERFORMED LEAK AND OPS CHECKS SATISFACTORY.

Part: UNKNOWN — SMOKE (COCKPIT & CABIN) · airframe 4,894 hrs · 3,851 cycles

AFTER STARTING APU & TURNING ON BLEED AIR, WHITE SMOKE STARTED TO FILL THE COCKPIT & CABIN. APU DID NOT SHUT ITSELF DOWN, NOR DID ANY VISUAL OR AURAL FIRE WARNINGS ILLUMINATE OR SOUND. SHUTDOWN APU & CALLED AIRPORT FIRE DEPARTMENT. THEY DID NOT FIND ANY INDICATION OF FIRE. INSPECTED APU OIL LEVEL. APU OIL LEVEL CHECKED GOOD. INSPECTED APU COMPARTMENT, NO EVIDENCE OF LEAKS FOUND. RAN APU WITH BLEED AIR ON, NO EVIDENCE OF SMOKE OR ODOR IN COCKPIT OR CABIN. PRESSURIZED ACFT WITH APU BLEED AIR. PRESSURIZATION CHECKED GOOD. PERFORMED OPERATIONAL CHECK OF AIR CONDITIONING DISTRIBUTION SYS, NO DEFECTS NOTED. OPERATIONAL CHECKS GOOD IAW AMM 21-20-05.

Part: BRAKE — MALFUNCTIONED (MLG) · airframe 4,754 hrs · 3,732 cycles

WHEN PRESSING ON THE LT BRAKE AT 15 KTS OR ABOVE, THE AIRPLANE SHUTTERS. HAPPENS WHEN PUSHING ON BOTH BRAKES SIMULTANEOUSLY, BUT NOT ON THE RT BRAKE ONLY. TROUBLESHOT BRAKES, BLED RT & LT BRAKES, PER MM. TAXI AND LEAK CHECKED GOOD.

Part: DIODE — FAILED (BRAKE SYS) · airframe 4,084 hrs · 3,212 cycles

ON TAXI OUT, POWER BRAKE CIRCUIT BREAKER TRIPPED ,ANTI-SKID CAUTION LIGHT ILLUMINATED FOLLOWED BY THE LOW BRAKE PRESSURE CAUTION LIGHT. AIRCRAFT WAS TOWED BACK TO RAMP. TROUBLESHOT SYS IAW THE WDM 32-40-01. FOUND NO DEFECTS, COULD NOT GET THE SYSTEM TO FAIL. MFG SUPPORT SUGGESTED REPLACING THE DIODE ON RELAY KX067 FROM X1 TO X2. REPLACED DIODE AND OPS CHECKED. SYS OPS NORMAL.

Part: MOTOR — UNSERVICEABLE (POWER BRAKE) · airframe 3,921 hrs · 3,065 cycles

POWER BRAKES CIRCUT BREAKER TRIPPED DURING TAXI. NO FAULTS WERE INDICATED IN NOSE COMPARTMENT. ACCUMULATOR PRESSURE AND FLUID LEVEL ARE NORMAL. RESET CIRCUIT BREAKER. ACCOMPLISHED OPS CHECK OF POWER BRAKE SYS, WAS NOT ABLE TO DUPLICATE DISCREPANCY. MCC WOULD LIKE TO HAVE POWER BRAKE PUMP MOTOR, HI PRESSURE SWITCH SY007 AND LO PRESSURE SWITCH SY009 REPLACED AS A PRECAUTION. REMOVED POWER BRAKE PUMP MOTOR PN MP50B-1, SN 2675. INSTALLED AN O/H MOTOR PN MP50B-1, SN 2233. REMOVED HI PRESSURE SWITCH SY009 P/N GPP1250-73 S/N 13 10923. INSTALLED A NEW SWITCH P/N GPP1250-73 S/N 1213883. REMOVED LO PRESSURE SWITCH SY009 P/N GPP1250-52 S/N 0833101. INSTALLED A NEW SWITCH P/N GPP1250 S/N 0916155. LEAK AND OPERATIONAL CHECK WERE FOUND TO BE SATISFACTORY. ACCOMPLISHED IAW CE-560XL MM 32-44-20.

Part: UNKNOWN — MULTIPLE FAIL (BRAKE SYSTEM) · airframe 3,921 hrs · 3,065 cycles

DURING TAXI OUT, POWER BRAKES CIRCUIT BREAKER TRIPPED AND ANTI SKID INOPERATIVE, ANNUNCIATOR ILLUMINATED. RESET CIRCUIT BREAKER AND WITHIN 10 SECONDS IT TRIPPED AGAIN. DURING TAXI IN, APPROXIMATELY ONE MINUTE LATER, LOW BRAKE PRESSURE ANNUNCIATOR ILLUMINATED. STOPPED ACFT. THERE WERE NO FAULTS DISPLAYED ON SKID CONTROL FAULT DISPLAY UNIT. POWERED ACFT, RESET POWER BRAKE CIRCUIT BREAKER. ALLOWED BRAKE PUMP TO PRESSURIZE SYSTEM. TIMED BRAKE PUMP CYCLE WITH PARKING BRAKE OFF AND SET, NO DEFECT NOTED, PUMPED BRAKE PEDALS MULTIPLE TIMES AND NO DEFECTS NOTED. REPLACED RELAY KZ067 AND POWER BRAKE CIRCUIT BREAKER HC113 AS A PRECAUTION. REMOVED RELAY KZ067, PN MS24166-D2. INSTALLED A NEW RELAY IN THE KZ067 POSITION. REMOVED POWER BRAKE CIRCUIT BREAKER HC113. INSTALLED A NEW CIRCUIT BREAKER, ALLOWED POWER BRAKE SYS TO OPERATE FOR 30 MINUTES, NO DEFECTS NOTED. OPS CHECK FOUND TO BE SATISFACTORY. ACCOMPLISHED MM WDM 32-40-01 AND MM 32-42-05.

Part: O-RING — DAMAGED (BRAKES) · airframe 2,591 hrs · 2,016 cycles

BRAKES WERE LOCKING UP OR "GRABBING" BRIEFLY AFTER THE ACFT SLOWED TO LESS THAN 20 KTS ON LANDING. REMOVING FEET BRIEFLY FROM BRAKES COMPLETELY, DID NOT CLEAR THE ISSUE. AT NO TIME DID THE BRAKES COMPLETELY FAIL. BRAKE RESERVOIR IS VERY FULL, AND NO LEAKS NOTED. AT NO POINT DURING THIS FLIGHT WAS THE ACFT EXPOSED TO LIQUID WATER. FOUND SMALL LEAK AT RT BRAKE BETWEEN ELBOW FITTING AND SHUFFLE VALVE. R & R O-RING ON ELBOW TO SHUTTLE VALVE IAW MM 32-44-00. BLED BOTH BRAKES IAW MM 32-44-10. LEAK CHECK GOOD. OPS CHECK GOOD ON TAXI.

Part: BRAKE — CHATTERING (LEFT) · airframe 2,231 hrs · 1,743 cycles

LT BRAKE CHATTERING WHEN ANY PRESSURE APPLIED. INSPECTED BRAKE SYS, CHECKED ACCUMULATOR PRESSURE AND FLUID LEVEL. SYS CHECKED GOOD. TAXIED ACFT AT 40 KTS, NO FAULTS NOTED. PERFORMED TAXI CHECK AT 70 KTS, NO FAULTS NOTED. DONE IAW MM 9-20-00.

Part: METERING VALVE — MALFUNCTIONED (MLG BRAKES) · airframe 1,508 hrs · 1,170 cycles

AFTER LANDING AND DURING TAXI, THE RT BRAKE GRABS VIOLENTLY WHEN BRAKES APPLIED. AFTER SHUTDOWN SITTING IN CHOCKS, A LOUD NOISE COMES FROM RT WING WHEN RT BRAKE APPLIED. NORMAL OPERATION OF LT BRAKE. REMOVED BRAKE VALVE. INSTALLED OVERHAULED BRAKE METERING VALVE. BLED BRAKES AND ANIT SKID CONTROL VALVE. OPS CHECKED GOOD. LEAK CHECKED GOOD. TAXI CHECKED GOOD. NO GRABBING NOISES PRESENT, WORK DONE IAW MM 32-44-00 AND 32-44-20.

Part: BRAKE SYS — MALFUNCTIONED (MLG) · airframe 1,284 hrs · 993 cycles

RT MAIN BRAKE GRABBING DURING TAXI, LOUD POPPING SOUNDS, SHUDDERING OF ACFT. HAD UNCOMMANDED APPLICATION AT SEVERAL POINTS. BRAKE DID NOT SEEM OVERLY WARM 10 MIN AFTER LANDING. JACKED ACFT , RT MAIN WHEEL ROTATED WHEEL & DID NOT HEAR BRAKES BINDING OR DRAGGING. REMOVED RT MAIN WHEEL ASSY INSPECTED BRAKE ASSY, ROTATED DISCS BY HAND WITH NO DIFFICULTY. CHECKED ALL LINES, FITTINGS & NO DISCREPANCIES NOTED. REINSTALLED WHEEL ASSY & PERFORMED RT BRAKE BLEED FOR 1 HOUR. ALL WORK DONE IAW MM 32-42-01 AND 32-42-00.