N726QS

ATA 2133

Part: OUTFLOW VALVE — DEFECTIVE (ZONE 100) · airframe 10,397 hrs · 6,149 cycles

IN CRUISE AT FL410, WE GOT A "AUTO PRES FAIL" EICAS MESSAGE. IMMEDIATELY STARTED A DECENT TO A LOWER ALTITUDE AND RAN CHECKLIST BUT THE CABIN PRESSURE WOULD NOT RESPOND TO MANUAL INPUTS. THE CABIN WAS CLIMBING AT ABOUT 4400FPM AT THIS POINT SO WE WENT ON O2 & DID AN EMERGENCY DECENT TO 10,000'. THE CABIN WAS FLUCTUATING AT THIS POINT TO CLIMBING AND/OR DENDING AT RATES UP TO 4000 FPM SO WE ASKED FOR A PRIORITY APPROACH INTO TUL. DURING THE APPROACH THE CABIN ALT AND RATE INDICATORS WOULD REVERT TO DASHES GIVING US NO INDICATIONS BUT WE COULD FEEL THE PRESSURE SWINGS IN OUR EARS. UPON LANDING, THE CABIN ALTITUDE CAME BACK AND INDICATED MINUS 9200 FEET. WE TURNED ON THE APU TO TRY TO EQUALIZE THE PRESSURE WITH THAT BUT THAT DIDNT HELP. WE TURNED OFF THE APU AND TAXIED IN WITH THE ENGINES RUNNING BUT THE BLEEDS SELECTED OFF. THE CABIN BEGAN TO RISE VERY SLOWLY SO WE SAT ON THE RAMP FOR ABOUT 10 MINUTES UNTIL THE CABIN GOT TO FIELD ELEVATION. WE THEN SELECTED EMER DEPRESS AND SHUT DOWN THE ENGINES. WE HAD THE FBO VERIFY THE DOOR AREA WAS CLEAR AND OPENED THE CABIN DOOR WITHOUT ISSUE. CORRECTIVE ACTION: TECHS SUMBITTED MDC DOWNLOADS TO MCC IAW AMM 45-45-01. MCC REQUEST TECHS REMOVED AND REPLACED BOTH THE OUTFLOW VALVE AND IASC #2. TECHS R & R THE OUTFLOW VALVE WITH A SUPPLIED REPAIRED UNIT IAW AMM 21-31-05. NO DEFECTS NOTED. TECHS REMOVED AND REPLACED THE IASC #2 WITH A SUPPLIED REPAIRED UNIT IAW AMM 21-31-01. ALL OPS CHECKS ARE GOOD NO DEFECTS.

ATA 3397

Part: CONNECTOR — DISCONNECTED (ZONE 200) · airframe 9,285 hrs · 5,467 cycles

EMERG EXIT SIGN/LIGHT: SIDEWALL MOUNTED EMERGENCY EXIT LIGHT JUST FORWARD OF EMERGENCY EXIT IS NOT ILLUMINATING. CORRECTIVE ACTION: RESECURED CONNECTION OF LIGHT ASSY. OPS CHECK GOOD. IAW CL-350 SMM 33-50-01

ATA 2910

Part: LINE — LEAKING (HYD SYSTEM) · airframe 7,156 hrs · 4,210 cycles

GEAR DISAGREE AMBER CAS: ON TAKEOFF, GEAR WAS SELECTED UP AND GEAR DISAGREE AMBER CAS MESSAGE ILLUMINATED. GEAR REMAINED INDICATED 3 GREEN W/ NO ASSOCIATED IN TRANSIT OR RED WARNINGS. CREW RAN QRH, EXTENDED GEAR NORMALLY. REMOVED LEAKING RT MLG SIDE STAY HYD LINE, INSTALLED A NEW HYD LINE IAW AMM 32-32-07-400-801, REV 35. PERFORMED FT AND LEAK CHECK, NO DISCREPANCIES IAW AMM 32-32-00, REV 35. REMOVED HOSE STAY. INSTALLED HOSE STAY IAW MM 32-32-07, REV 35, OPS TESTED SATISFACTORY. ORIG SUB DATE: 12/7/2022

ATA 5210

Part: HANDLE — FAULTED (PAX DOOR) · airframe 7,156 hrs · 4,209 cycles

ENTRANCE STAIR: MAIN DOOR WHEN STEP ON TO THE STAIRS THE RED HANDLE RETRACTS TO THE MID POSITION CAUSING THE DOOR TO DROP. UNSTABLE CONDITION. THE MAIN CABIN DOOR WILL NOT CLOSE WITH THE HANDLE IN THAT POSITION . YOU WOULD HAVE TO PUSH THE HANDLE FWD TO CLOSE THE DOOR. WHEN OPENING THE DOOR THE DOOR WILL NOT EXTEND DWN TO A SECURE POSITION. GAINED ACCESS TO INTERNAL MECHANISMS OF THE PAX DOOR PERFORMED GVI OF THE PAX DOOR INTERNAL NO DEFECTS NOTED IAW CL350 AMM 52-11-00-210-802 PERFORMED LUBRICATION OF THE PAX DOOR AND RESTORED ACCESS IAW CL350 AMM 12-22-00-640-808 PERFORMED OPS CHECK OF THE PAX DOOR AND WALKED UP AND DOWN STEPS WITH NO DEFECTS NOTED IAW CL350 AMM 52-11-00-010-801. ORIG SUBMISSION DATE: 12/6/2022

ATA 5210

Part: STRUT — DEFECTIVE (PAX DOOR) · airframe 4,707 hrs · 2,797 cycles

AFTER BLOCK IN, WITH DELTA P AT 0 (ZERO), MAIN CABIN DOOR WOULD NOT OPEN. TOP OF DOOR STARTS TO SEPARATE FROM AIRFRAME. APPLIED SOMEWHAT MORE FORCE THAN NORMAL WITHOUT DOOR CONTINUING TO OPEN. WE WERE ABLE TO SAFELY OPEN THE MAIN CABIN DOOR AND DUPLICATED THE DISCREPANCY THAT THE 1ST ATTEMPT WAS HARDER THAN IT SHOULD BE. HOWEVER, ALL SUBSEQUENT TESTS OF OPENING AND CLOSING THE DOOR ARE GOOD AT THIS TIME. PER BOMBARDIER FSR INSTRUCTIONS, WE CLEANED AND INSPECTED PAX DOOR SEAL, IAW CL-350 52-11-29. NO DEFECTS NOTED. CHECKED THE RIGGING OF THE TELESCOPIC STRUTS, IAW CL-350 AMM 52-11-41. FOUND THAT BOTH STRUTS ARE WITH IN LIMITS FOR LENGTH AT FULL EXTENSION AND PAX DOOR IS LEVEL WITH THE AIRFRAME. REMOVED PAX DOOR STEPS, IAW AMM CL-350 52-11-31. CLEANED AND INSPECTED DOOR MECHANISM FOUND NO DEFECTS NOTED AT THIS TIME. REINSTALLED PAX DOOR STEPS IAW CL-350 AMM 52-11-31. NOTED BOTH TELESCOPIC STRUTS SHOW SIGNS OF LEAKAGE AT TOP OF ASSEMBLY. NOTIFIED NJA MCC, CUSTOMER ELECTS TO REPLACE BOTH TELESCOPIC STRUTS. REMOVED LEAKING FWD STRUT ASSEMBLY ASSEMBLY PN: 1005210250-017 SN: 0759 FROM PASSENGER DOOR, IAW CL-350 AMM 52-11-41. PERFORMED PRE INSTALLATION INSPECTION, NO DEFECTS NOTED AT THIS TIME. INSTALLED NEW STRUT ASSEMBLY PN: 1005210250-017 SN: 1731 ON FWD SIDE OF PASSENGER DOOR, IAW CL-350 AMM 52-11-41. POST INSTALLATION INSPECTION REQUIRED. PERFORMED POST INSTALLATION INSPECTION, NO DEFECTS NOTED AT THIS TIME. REMOVED LEAKING AFT STRUT ASSEMBLY PN: 1005210250-017 SN: 1578 FROM PASSENGER DOOR, IAW CL-350 AMM 52-11-41. PREINSTALLATION INSPECTION REQUIRED. PERFORMED PRE INSTALLATION INSPECTION, NO DEFECTS NOTED AT THIS TIME. INSTALLED NEW STRUT ASSEMBLY PN: 1005210250-017 SN: 1965 ON AFT SIDE OF PASSENGER DOOR, IAW CL-350 AMM 52-1 1-41. POST INSTALLATION INSPECTION REQUIRED. LT PERFORMED POST INSTALLATION INSPECTION, NO DEFECTS NOTED AT THIS TIME. PERFORMED ADJUSTMENT OF THE PASSENGER DOOR FWD TELESCOPIC STRUT, IAW CL:-350 AMM 52-11-41. PERFORMED A

ATA 7261

Part: OIL SYSTEM — LEAKING (RT ENGINE) · airframe 5,928 hrs · 3,779 cycles

CLIMBING THRU 38,000 FEET TO 39,000, RECEIVED A RT ENGINE LOW OIL PRESSURE INDICATION. RAN CHECK LIST AND SHUTDOWN THE ENGINE IAW CHECK LIST. CHECKED ENGINE OIL PRESSURE IT WAS 0. LANDING WAS UNEVENTFUL ON POST FLIGHT NOTICED OIL LEAKING FROM THE ENGINE COWLING AREA.

ATA 2397

Part: RECEPTACLE — DAMAGED (VIDEO MONITOR) · airframe 5,546 hrs · 3,538 cycles

ON THE GROUND WITH APU RUNNING, POWERED UP THE PERSONAL VIDEO MONITORS TO DISPLAY THE AIRSHOW. AFTER ABOUT 3 TO 5 MINUTES, NOTICED THE MONITOR AT SEAT NR 2 POSITION FLICKERED, THEN WENT BLANK AND IT BEGAN TO EMANATE AN ELECTRICAL BURNING ODOR FROM CONNECTION. AFTER REMOVING ALL POWER FROM THE PLANE, THE ODOR DISSIPATED. FOUND LOWER PART OF RECEPTACLE DAMAGED, R & R FWD MONITOR RECEPTACLE, OPS CHECKED GOOD IAW MM 25-30-10.

ATA 2720

Part: RUDDER CONTROL — MALFUNCTIONED · airframe 4,406 hrs · 2,854 cycles

UNCOMMANDED RUDDER TRIM MOVEMENT IN FLIGHT. RUDDER MOVES FROM 1 UNIT RT TO 1 UNIT LT WITH A CORRESPONDING CHANGE IN ACFT COORDINATION.

ATA 3234

Part: CONTROL CABLE — LACK OF LUBE (MLG) · airframe 1,357 hrs · 916 cycles

GEAR HANDLE IS VERY HARD TO MOVE UP OR DOWN. IT ALMOST TAKES TWO HANDS TO RETRACT GEAR UP. NOT AS BAD SELECTING GEAR DOWN BUT STILL HARDER TO DO THAN NORMAL. REMOVED LANDING GEAR CONTROL CABLE AT GEAR CONTROL HANDLE AND LANDING GEAR SELECTOR VALVE. CLEANED AND LUBED CABLE AT TELESCOPING ENDS. RE-ATTACHED CABLE AT BOTH ENDS. PERFORMED EXTENSION AND RETRACTION CHECKS. ALL CHECKS OF GEAR HANDLE GOOD. WORK PERFORMED IAW MM SEC 32-30-00 AND CMP 323001.

ATA 3230

Part: CONTROL VALVE — INOPERATIVE (MLG) · airframe 1,332 hrs · 899 cycles

AFTER TAKEOFF GEAR HANDLE WOULD NOT COME UP. TRIED TO PRESS DOWNLOCK OVERIDE AND GEAR HANDLE WOULD NOT MOVE. REPLACED LANDING GEAR CONTROL ASSY. PERFORMED DOWNLOCK SOLENOID / OVERIDE OPERATIONAL CHECK IAW G200 MAINT. MAN CH. 32-30-00. NO DEFECTS NOTED AT THIS TIME.

ATA 2612

Part: FIRE DETECTOR — FAILED (RT ENGINE) · airframe 1,409 hrs · 906 cycles

DURING DESCENT ( R ENG FIRE DETECT) AMBER MESSAGE ILLUMINATED AND REMAINED ON. TROUBLESHOT RT ENG- FIRE DETECT SYSTEM, FOUND ZONE 2 FIRE LOOP INOP. REMOVED AND REPLACED RT ENGINE ZONE 2 FIRE LOOP WITH (NEW) UNIT IAWMM 26-10-10 AND CMP'S 261102, 783010, 714202 AND 714204. PERFORMED OPERATIONAL TEST IAW G200 MM 26-10-20 AND G200 CMP 261005. OPS CHECK GOOD.

ATA 5100

Part: COMPUTER — PILOT ERROR (COCKPIT) · airframe 1,028 hrs · 695 cycles

DURING TAKE OFF ROLL ENGINE SET PARAMETER DID NOT MATCH TAKE OFF CONDITTION. - OBSERVED TAKE OFF POWER FOR THE DAY, NOTICED TEMPERATURE ROSE SIGNIFICANTLY. RECALCULATED PERFORMANCE USING CURRENT TEMPERATURE AND ENGINE PERFORMED NORMALLY IAW GULFSTREAM G200 AFM.