N557QS

Part: LIGHT — DIM · airframe 15,467 hrs · 11,766 cycles

FORWARD EMERGENCY EXIT LIGHT (SHARK LIGHT) UNDER THE RIGHT WING IS EXTREMELY DIM.

Part: LIGHT — DEFECTIVE (ZONE 200) · airframe 15,467 hrs · 11,766 cycles

FORWARD EMERGENCY EXIT LIGHT (SHARK LIGHT) UNDER THE RIGHT WING IS EXTREMELY DIM. FORWARD EMERGENCY EXIT LIGHT WAS REMOVED AND REPLACED IA W CE-560XL AMM 33-50-04. OPS CHECK GOOD WITH NO DEFECTS. NOTED

Part: BATTERY PACK — FAULTED (ZONE 200) · airframe 15,394 hrs · 11,702 cycles

OVER WING EMERGENCY EGRESS LIGHTS ARE ON REGARDLESS OF WHICH POSITION. RECYCLED MULTIPLE TIMES. GAINED ACCESS TO AFT EMERGENCY LIGHT BATTERY PACK. RESEI G-SWITCH. OPS CHECK EMERGENCY LIGHTS. OPS CHECK GOOD. NO FURTHER DEFECTS NOTED. WORK PERFORMED IN REFERENCE TO AMM 33-50-01

Part: PROXIMITY SWITCH — OUT OF ADJUST (ZONE 800) · airframe 15,378 hrs · 11,690 cycles

IN FLIGHT WE HAD AN INTERMITTENT 'EMER EXIT' WITH ASSOCIATED MASTER CAUTION CORRECTIVE ACTION: ADJUSTED PROX SWITCH. OPS CHECK GOOD. IAW AMM 52-20-01.

Part: CONTROL CABLE — MISROUTED (RUDDER TRIM) · airframe 14,122 hrs · 10,748 cycles

DURING FLIGHT DISCONNECTED AUTOPILOT & YAW DAMPER TO ADJUST A SLIGHT RUDDER TRIM INPUT. NOTICED THE INPUT IN CONDITION GOT WORSE. ADJUSTING TRIM OPPOSITE MADE CONDITION BETTER. ON LANDING, CHECKED RUDDER TRIM DEFLECTION WITH FULL LT TRIM & TAB WAS DEFLECTED LT. & FULL RT TRIM TAB DEFLECTS RIGHT. TRIM APPEARS TO HAVE BEEN INSTALLED REVERSE. VERIFIED RUDDER TRIM MOVING IN WRONG DIRECTION WITH MANUAL INPUT. ACCESSED AFT RUDDER TRIM TAB CABLE. FOUND CABLE MISS ROUTED AFT OF PULLEY BRACKET BS 572 IN TAIL BELOW VERTICAL STAB IAW MM 27-21-02. REPLACED RUDDER TRIM CABLE. WHILE REMOVING CABLE FOUND ROUTING TO BE INCORRECT & CHAIN ON BACKWARDS. INSTALLED NEW RUDDER TRIM CABLE. IAW MM 27-21-02. TENSIONED CABLE. IAW MM 27-20-00. FOUND RUDDER TRIM INDICATOR GOING TO FAR LT & NOT FAR ENOUGH RT. REPOSITIONED RUDDER TRIM INDICATOR. IAW MM 27-20-00. RIG & TRAVEL CHECK GOOD. IAW MM 27-20-00. VERIFIED ROUTING, CHAIN WRAP, TRAVELS & COMPLIED WITH OBSERVERS CHECK, SAFETIED RUDDER TRIM CABLE TURNBUCKLES IAW MM 27-20-00. REHECKED RUDDER TRIM CABLE TENSION, CHECKED GOOD. IAW MM 27-20-00. VERIFIED TENSION AND AND ROUTING. ORIGINAL SUBMISSION DATE: 02/02/2024.

Part: SHUTOFF VALVE — FAULTED (FUEL SYS) · airframe 13,987 hrs · 10,647 cycles

RAN XFEED & FUEL TRANSFER NORMAL. WHEN CLOSING XFEED BOTH BOOST PUMP LIGHTS ILLUMINATED & STAYED ILLUM STEADY, NO FLASHING & NO MASTER CAUTION. UNABLE TO TRANSFER FUEL WITH BOOST PUMPS RUNNING. POWERED ON BATTERY & OPS FUEL BOOST PUMPS, NO DEFECTS, STARTED APU & OPS FUEL XFEED SYS, NO DEFECTS, SYS ACTIVATES & DE-ACTIVATES GOOD, STARTED ENGS & RAN XFEED SYS AGAIN, ALL NORMAL, LT XFEED IN LT TO RT & RT TO LT FOR 10 MINS, ALL NORMAL, SHUTDOWN ENGS & OPS SYS MULTIPLE TIMES, NO DEFECTS, POWERED DOWN ACFT, ADVISED THE RT MOTIVE FLOW SHUTOFF VALVE IS LIKELY SUSPECT CAUSE OF PROBLEM, POWERED UP ACFT, RAN XFEED SYS, NO DEFECTS, R & R RT MOTIVE FLOW SHUTOFF VALVE WITH NEW IAW MM 28-21-06, OPS & LEAK CHK GOOD.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,863 hrs · 10,552 cycles

MAIN DOOR PRECATCH: PRE CATCH HANDLE TAKES AN ABNORMAL AMOUNT OF FORCE TO GET IT TO RELEASE. BOTH OUTSIDE BUTTON AND INSIDE HANDLE.VERIFIED WRITE UP. GAINED ACCESS TO PRECATCHE LEVER MECHANISM. FOUND ONE OF THE RUBBLER TUBES FOR THE ACOUSTIC DOOR SEAL INTERFERING WITH THE MECHANISM. REPOSITIONE AND SECURED TUBING, PERFORMED OPS CHECK OF PRECATCH IAW CE-560XL MM CHAP 52•10-01. CLOSED INTERIOR ACCCESS, AND RETURNED AC TO ORIGINAL CONFIGURATION

Part: FLOORBOARD — CORRODED (ZONE 100) · airframe 13,860 hrs · 10,547 cycles

FOUND CORROSION UNDER FWD CABIN FLOORBOARD, PERFORM DOUBLER REPAIRS TO FWD DROP AISLE FUSELAGE SKIN AND STRINGER LOCATIONS BETWEEN FS 157.00 AND F.S. 253.20. ALL WORK PERFORMED AND COMPLETED IAW AQRD ERO-976504 REV IR DATED 10/10/2023 THE F&DT EVALUATION MUST BE COMPLETED WITHIN 12 MONTHS FROM THE DATE OF ISSUE OF THE ASSOCIATED 8110-3. AND FAA FORM 8110-3 DATED 10/10/2023. THIS IS A MAJOR REPAIR.

Part: BULKHEAD — CORRODED (ZONE 100) · airframe 13,860 hrs · 10,547 cycles

BLENDED AND REMOVED ALL VISIBLE SIGNS OF CORROSION ON NLG FWD PRESSURE BULKHEAD. PERFORMED PRESSURE BULKHEAD CORROSION REPAIR IAW FAA FORM 8110-3 DATED 8/14/23 AND ERO-976468 REV.IR, DATED AUGUST 14, 2023 FWD PRESSURE BULKHEAD CORROSION REPAIR. THIS IS A PERMANENT MAJOR REPAIR.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,808 hrs · 10,503 cycles

AFTER TAKEOFF THE NOSE WHEEL WAS GROWLING &VIBRATING. AFTER GEAR & FLAP RETRACTION, GEAR WARNING HORN ACTIVATED & NO TAKEOFF ANNUNCIATOR ILLUMINATED. CABIN CLIMBING AT ACFT CLIMB RATE OF 4000 FT/MIN UNTIL LEVEL OFF AT 3000 FT. ONLY NO TAKEOFF ANNUNCIATOR ILLUMINATED, NO HYD PRESS ANNUNCIATOR. AT BEGINNG DESCENT, CABIN DESCENDING AT ACFT RATE OF 1000 FT/MIN. GEAR WARNING CONTINUED UNTIL LOWERING GEAR. QRH PROCEDURE FOR NO TAKEOFF ANNUNCIATOR WAS ACCOMPLISHED IN FLT. ADJUSTED LT MLG SQUAT SWITCH IAW AMM 32-61-00. PERFORMED MULTIPLE OPS CHECK OF LANDING GEAR EXTENSION AND RETRACTION SYSTEM IAW AMM 32-01-00. OPS CHECKS GOOD.

Part: NONE — NONE · airframe 12,659 hrs · 9,632 cycles

REPAIRED 2EA HOLES CHAFED INTO EMERGENCY EXIT SURROUND PER AQRD ERO-106494 REV IR TITLED N557QS EMERGENCY EXIT DOUBLER CHAFE HOLES, DATED JUNE 10 2022 APPROVED ON FAA FORM 8110-3 DATED 10 JUNE 2022.

Part: LIGHT — INOPERATIVE · airframe 12,440 hrs · 9,474 cycles

EMERG EXIT SIGN/LIGHT: DURING TEST, THE EMERGENCY EXIT SIGN LIGHT ON THE FRONT LOWER BOTTOM OF LAV IS NOT ILLUMINATED WHEN ALL OTHER EMERGENCY LIGHTS ARE ON. (PRE-FLIGHT) CORRECTIVE ACTION// REMOVED AND REPLACED AFT EMERGENCY BATTERY LIGHT OPS CHECK GOOD

Part: UNKNOWN — DEFECTIVE (ZONE 100) · airframe 12,167 hrs · 9,282 cycles

POWER BRAKE CB: UPON TAXING IN TO THE RAMP. WE LOST BRAKES THE PWR BRKS CB POPPED AND THE ANTISKD INIP LIGHT CAME ON. WE ROLLED TO A STOP AND CHOCKED THE PLANE. // SIGNOFF// GAINED ACCESS AS REQUIRED, CHECKED POWER BRAKE MOTOR SPLICES FOR CONDMON AND CORRECT INSTALATION WITH NO DEFECTS NOTED AT THIS TIME. GAINED ACCESS TO POWER BRAKE MOTOR RELAY AND CHECKED RELAY AND DIODES, FOUND RE~V LOOSE AND NPT SECURED CORRECTLY, SECURED RELAY AND NOTIFIED MCC. PER MCC CONTROLLER DOUGLAS YENCER,, D!,JE TO PRIOR HISTORY THEY WANT TO CHECK THE WIRING FROM PUMP MOTOR TO RELAY AND FROM RELAY TO CRCUITBREAKER.GAINED ACCESS AND CHECKED WIRING AS REQUIRED WITH NO DEFECTS NOTED AT THIS TIME. NOUFIED MCC OF FINDINGS, PLAN IS TO REPLACE THE RELAY AND DIODES, PARTS PLACED ON ORDER BY MCC CONTROLLEI REMOVED AND REPLACED POWER BRAKE RELAY AND DIODES. PERFORMED SATISFACTORY OPERATONAL CHECK OF POWER BRAKES SYSTEM I/A/W CES560XLS WMM 32-40-01. TAXI AIRCRAFT .AND OPS CHECK POWER BRAKES AND POWER BRAKES C/B POPPED SEVERAL TIMES DURING TAXI. CONTINUED T/SHOOTING FOUND LOOSE HARDWARE ON POWER BRAKE C/B BAR, REMOVED AND REINSTALLED HARDWARE. CHECKED WIRING FROM POWER BRAKE C/B TO RELAY AND TO POWER BRAKE MOTOR .AND DISCONNECTED, CLEANED AND REINSTALLED ALL ELECTRICAL PLUGS FROM POWER BRAKE C/B TO RELAY AND MOTOR. LIKE TO TAXI AIRCRAFT ONE MORE TIME BUT FBO IS VERY BUSY AND CANT RELOCATE THE AIRCRAFT TO A AREA WERE WE CAN TAXI THE AIRCRAFT. WE WILL TAXI AIRCRAFT IN THE MORNING. FBO WILL RELOCATE AIRCRAFT .AND HAVE IT READY FOR US IN THE MORNING. TAXIED AIRCRAFT, NOTED THAT POWER BRAKE CIRCUIT BREAKER TRIPS S11LL WHEN TAXING, RETURNED TO RAMP TO CONTINUE TROUBLE SHOOTING. ONCE BACK AT RAMP, AFTER ENGINE SHUTDOWN, KEPT APU RUNNING AND NOTED THAT POWER BRAKES CIRCUIT BREAKER TRIPPED WHILE AIRCRAFT WAS SITTING STATIC. GAINED ACCESS TO POWER BRAKES PUMP AND OPERATED BLEED VALVE TO CYCLE PUMP MOTOR ON AND OFF, NOTED THAT WHEN CIRCUIT BREAKER TRIPS, HYDRAUUC PUMP SURGES/CHATTERS . NOTED THAT EVER

Part: BATTERY — DEFECTIVE (EMERGENCY LIGHT) · airframe 11,758 hrs · 8,985 cycles

EMERG EXIT DOOR: EMER EXIT DOOR LIGHT CAME ON IN FLIGHT AND STAYED ON AFTER LANDING. // SIGNOFF// REMOVED DEFECTIVE EMERGENCY BATTERY PACK P/N: 9913-1 S/N:703 AND INSTALLED CUSTOMER SUPPLIED OVERHAULED EMERGENCY BATTERY PACK P/N: 9913-1 S/N: 548 PERFROMED CHARGING OF EMER BATTERY PACK FOLLOWED BY PERFORMING OPERATIONAL CHECK WITH NO FURTHER DEFECTS NOTED AT THIS TIME. REF. CE-560XL AMM 33-50-01

Part: CONDENSER — DIRTY (ZONE 100) · airframe 11,635 hrs · 8,898 cycles

COCKPIT ODOR: THERE IS AN OCCASIONAL BURNING SMELL IN THE COCKPIT AND AROUND THE MAIN CABIN DOOR WITH THE AIR CYCLE SYSTEM RUNNING. REMOVED CONDENSER BAG P/N 21BC113 S/N NA IAW WITH 560XLS AMM 12-20-21 OPS CHECK GOOD

Part: INDICATOR — OUT OF ADJUST (PAX DOOR) · airframe 11,635 hrs · 8,898 cycles

MAIN DOOR VISUAL INDICATOR: THE VISUAL INDICATOR IN THE MAIN DOOR HANDLE IS OUT OF ADJUSTMENT AND YOU CANNOT SEE/ VERIFY THAT THE DOOR HANDLE IS LOCKED. //SIGNOFF // INVESTIGATED MAIN DOOR VISUAL INDICATOR AND FOUND THAT THE VISUAL INDICATOR NEEDED TO BE ADJUSTED. ADJUSTED MAIN DOOR VISUAL INDICATOR IAW 560XLS AMM 52-10-0 I. OPS CHECKED GOOD.

Part: BEARING — DEFECTIVE (MLG) · airframe 9,787 hrs · 7,537 cycles

ALL LANDING GEAR RETRACTION DID NOT RETRACT - UPON CLIMBOUT STAB MIS COMP ANNUNCIATOR WOULD NOT EXTINGUISH. REALIZED GEAR NEVER RETRACTED AS RED INTRANSIT LIGHT REMAINED ILLUMINATED. RAN LANDING GEAR WILL NOT RETRACT QRH. LANDING GEAR EXTENDED NORMALLY AND ALL SYSTEMS WORKED CORRECTLY AFTER CHECKLIST COMPLETION. ACCOMPLISHED ELECTRICAL RIGGING OF UPLOCK SWITCH, MEASURED CHROME OF STRUT, STRUT MEASURED 9.15 INCHES - .05 ABOVE MAX LIMITS - REMOVED LOWER BARREL OF STRUT - MEASURED FROM BEARING TO FORK AT 15.99" (.05 ABOVE LIMITS). REMOVED BEARING ASSEMBLY - CLEANED THREATS, INSTALLED NEW BEARING ASSEMBLY (NOW MEASURING 15.87") - REINSTALLED LOWER PORTION OF STRUT. MEASURED CHROME NOW TO BE 9" (WITHIN LIMITS). ACCOMPLISHED OPERATIONAL CHECKS, PERFORMED 2 DOZEN GEAR SWINGS WITH NO DEFECTS. ALL WORK DONE IAW MM 32-20-01.

Part: CONVERTER — ODOR (CABIN) · airframe 9,176 hrs · 7,104 cycles

HAD A MUSTY ODOR IN THE CABIN DURING PREFLIGHT, ATTRIBUTED TO MAINTENANCE DONE PREVIOUSLY ON THE SOCK. CLIMBING OUT ABOVE 10,000 FT, SHUT OFF THE APU, SWITCHED TO BLEEDING OFF THE ENGINES. RECEIVED AN ODOR OF HOT METAL OR OIL IN THE CABIN. WAITED A FEW MINUTES TO DISSIPATE AND WHEN THE ODOR PERSISTED, TURNED AROUND AND WENT BACK TO DEPARTURE. REMOVED AND REPLACED THE LEFT SIDE OZONE CONVERTER, PERFORMED A LEAK AND OPS CHECK, NO DEFECTS NOTED IAW AMM 21-71-00. REMOVED AND REPLACED THE WATER SEPERATOR, PERFORMED A LEAK AND OPS CHECK, NO DEFECTS NOTED IAW AMM 21-51-00.

Part: UNKNOWN — ODOR (COCKPIT) · airframe 9,105 hrs · 7,044 cycles

COCKPIT HAD AN OIL ODOR, COCKPIT TEMP CONTROLLER SELECTED AT 11 O'CLOCK POSITION. AT FL360. REMOVED THE WATER SEPARATOR FROM AIRCRAFT. CLEANED THE CONDENSER IAW MM 12-19-02. INSPECTED CONDITIONED AIR DUCTING FOR EVIDENCE OF OIL. NONE FOUND. REINSTALLED THE WATER SEPERATOR IAW MM 21-51-00. LEAK CHECKED GOOD. PERFORMED AN APU AND ENGINE RUNS, NO OIL ODOR EVIDENT.

Part: SPAR CAP — CORRODED (VERTICAL STAB) · airframe 8,485 hrs

TWO SPOTS OF CORROSION ON THE RT VERTICAL STAB AFT SPAR CAP ANGLE APPROX 7 INCHES BELOW UPPER RUDDER HINGE. MECHANICALLY REMOVED CORROSION IAW SRM 51-70-08 AROUND 5 RIVETS AND SURROUNDING AREAS. THIS IS A PSE AREA IAW SRM 51-00-04. CORROSION WAS BEYOND LIMITS IAW 51-10-01.

Part: SPAR CAP — CORRODED (LEFT) · airframe 8,485 hrs

CORROSION ON LEFT LOWER SPAR CAP, PSE AREA BEHIND WHEEL WELL PANEL 512DB. CORROSION IS BEYOND LIMITS IAW SRM 51-10-01 AND DESCRIPTION 4 OF GMM 2.2.2. REPAIRED ER 5559/07RD WITH SUBMITTAL LETTER REPORT NR 17-1732 FORM 8100-9.

Part: SPAR — CORRODED (LT WING) · airframe 8,485 hrs

SEVEN SPOTS OF CORROSION ON THE LT WING AFT SPAR ANGLE IN THE FLAP WELL AT APPROX WS 77.5. MECHANICALLY REMOVED CORROSION IAW SRM 51-70-08. THIS IS A PSE AREA IAW SRM 51-00-04. CORROSION IS BEYOND LIMITS IAW 51-10-01.

Part: APU — ODOR (APU BAY) · airframe 7,880 hrs · 6,113 cycles

OIL BASED ODOR PRESENT IN THE CABIN WHEN THE APU BLEED AIR IS SELECTED ON. NO VISIBLE SMOKE BUT OIL PARTICLES ARE IRRITATING TO BOTH CREWMEMBERS EYES. INSTALLED A REPAIRED APU IAW MM 49-10-00, INSTALLED DRAIN LINES, SERVICED APU, OPS AND LEAK CHECK OF APU GOOD, ALL WORK DONE IAW MM 49-10-00.