N551QS

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 7,603 hrs · 5,004 cycles

ACCOMPLISHED RFTS-114898 REV.0. DATED 05SEP25, UPLOCK FAULT LOGIC FUNCTIONAL TEST DEVELOPMENT.

Part: SWITCH — FAULTED (EMERGENCY LIGHTS) · airframe 4,432 hrs · 2,896 cycles

MAIN EXIT SIGN/LIGHT: MAIN CABIN DOOR EMERGENCY EXIT LIGHTS (2 TWO ON LOWER FRAME AND ONE OVERHEAD) AND PATH LIGHT UNDER SEAT 10 WILL NOT EXTINGUISH WITH ALL POWER REMOVED. RESET #1 INERTIA SWITCH AND MAIN CABIN DOOR EMERGENCY EXIT LIGHTS (2 TWO ON LOWER FRAME AND ONE OVERHEAD) AND PATH LIGHT UNDER SEAT 10 EXTINGUISHED. REF AMM 33-50-00

Part: NONE — NONE · airframe 4,418 hrs · 2,888 cycles

CORROSION ON THRUST REVERSER ATTACH FLANGE. NORDAM FIELD ENGINEERING DISPOSITION LETTER DOCUMENT NUMBER NTRSD-22TP-282 DATED OCTOBER 21, 2022.THRUST REVERSER CAN RETURN TO REGULAR OPERATIONS FOR 12 MONTHS FROM DATE OF DISPOSITION. AT THAT TIME IF NOT ACCOMPLISHED SOONER THE TR MUST BE REMOVED AND THE FLANGE REPLACED PER REPAIR #5 IN THE COMPONENT MAINTENANCE MANUAL.

Part: PANEL — BROKEN (ZONE 200)

PANEL CRACKED PART NUMBER 6666222

Part: DOUBLER — DAMAGED (ZONE 300) · airframe 4,225 hrs · 2,745 cycles

VERTICAL FIN ACCESS PANEL 341CR FASTENER HOLE DAMAGED REF ENGINEERING MEMO DQ35850M1 DATED 8/8/2022

Part: BRAKE SYS — SLUGGISH · airframe 4,223 hrs · 2,744 cycles

MLG BRAKE PRESSURE: WHEN LANDING BRAKES ARE SPONGY AND MUST PUT THEM ALL THE WAY TO THE FLOOR FOR THEM TO TAKE EFFECT. // SIGNOFF // PERFORMED VISUAL INSPECTION OF THE MLG BRAKES, PLUMBING AND FUSES (WITH WHEELS INSTALLED) NO DEFECTS NOTED. PERFORMED BLEEDING OF THE MLG BRAKES REF CE680A AMM 32-42-00. DID GET AIR FROM #1 AND #3 MLG BRAKE ASSEMBLIES, VERIFIED PROPER BRAKE PRESSURES VIA ONBOARD DIAGNOSTICS PAGE. NOTIFIED MCC OF FINDINGS, PER MCC, AIRCRAFT IS TO BE RETURN TO TO SERVICE

Part: NONE — DEFECTIVE · airframe 3,804 hrs · 2,472 cycles

A/I STAB HOT R AMBER CAS: ABORTED TAKEOFF BELOW 80 KTS DUE TO AN AMBER A/I STAB HOT R MESSAGE. THE ANTI ICE WAS NOT SELECTED ON AT THE TIME. THE MESSAGE EXTINGUISHED AFTER SHUTDOWN.//CORRECTIVE ACTION//REMOVED AND REPLACED RH STAB ANTI ICE PRESSURE REGULATING SHUT OFF VALVE (VTOI6) JAW CE680A AMM 30-15-05. PERFORMED OPS CHECK AND LEAK CHECK, OPS CHECKS LEAK CHECKS GOOD.

Part: BATTERY — FAULTED · airframe 3,485 hrs · 2,290 cycles

BATTERY / CHARGER: BAT OTEMP R CAS MESSAGE DISPLAYED AFTER TAKEOFF. BAT TEMP FLUCTUATED FROM 52 TO 67 C. // SIGNOFF // INPSECTED RH BATTERY TEMP WIRING. NO DEFECTS NOTED. SWAPPED LH AND RH BATTERIES FOR TROUBLESHOOTING. REPOSITIONED BATTERIES BACK TO ORIGINAL LOCATION. REMOVED AND REPLACED RH BATTERY REF. CE-680 M/M 24-30-05. OPS CHECK GOOD. PERFORMED GROUND RUN. BOTH BATTERY TEMP EQUAL DURING GROUND RUNS. NO DEFECTS NOTED.

Part: CABLE — OUT OF RIG (UPLOCK) · airframe 752 hrs · 530 cycles

AFTER TAKEOFF RETRACTED GEAR, INDICATED UP BUT SOUNDED MORE ABRUPT AND LOUDER THAN NORMAL. INDICATIONS WERE NORMAL UNTIL PASSING THRU ABOUT 11000 FEET AND ACCELERATED THRU ABOUT 260 TO 270 KNOTS. THEN WE HEARD A SERIES OF 3 TO 5 SECONDS OF LOUD THUMPS AND BUMPS LIKE THE NOSE GEAR WAS TRYING TO RETRACT STILL INSIDE THE NOSE WHEEL COMPARTMENT. THIS HAPPENED FOR 3 TO FOUR TIMES WITHIN ABOUT TWO MINUTES. THE LAST TIME, GOT A CROSSHATCH ON NOSE GEAR AND THE OVERSPEND ON SPEED TAPE. SLOWED AIRCRAFT TO 200 KNOTS AND INDICATION REMAINED NORMAL. AFTER DESCENDING TO 8000 FEET PUT GEAR DOWN AND GOT ALL NORMAL INDICATIONS. RIGGED NOSE UPLOCK HOOK RELEASE CABLE AND PROPERLY INSTALLED CLEVIS BOLT AT THE UPLOCK HOOK. FUNCTIONAL CHECKS AND EMERGENCY EXTENSION CHECKS AND SYSTEM OPERATED NORMALLY. ALL WORK DONE IAW 680A MM 32-34-00

Part: UPLOCK SWITCH — FAILED (MLG) · airframe 752 hrs · 530 cycles

AFTER TAKEOFF, GEAR DISAGREE N AND YELLOW CROSS HATCH ON GEAR INDICATOR ILLUMINATED. BLOW DOWN HANDLE ALSO PULLED. REMOVED AND REPLACED UPLOCK SWITCH .

Part: PULLEY BRACKET — CRACKED (AUTOPILOT SYS) · airframe 8,816 hrs

DURING A SCHEDULED INSPECTION WE FOUND THE AUTOPILOT SERVO CABLE PULLEY BRACKET CRACKED. THE CRACK WAS THROUGH ONE ATTACH RIVET & WENT TO THE END OF THE BRACKET. REPLACED BRACKET & SENT SERVICE CONDITION REPORT 745468.

Part: PUSHROD — DAMAGED (CONTROL COLLUMN) · airframe 8,434 hrs · 6,625 cycles

A VIBRATION IN THE CONTROLS & IN THE FLOOR, NOTICEABLE IN SMOOTH AIR IN CRUISE AT FL 400. AT LOWER ALTITUDES VIBRATION GOES AWAY. FOUND ELEVATOR TRIM TABS LOOSE DUE TO WORN PUSHRODS & HARDWARE AT TRIM TAB ACTUATOR. R & R LT & RT ELEVATOR TRIM TAB INNER & OUTER PUSHRODS IAW MM 27-32-03. RIGGED LT & RT TRIM TABS. LUBRICATED LT & RT TRIM TAB ACTUATORS. TRAVEL CHECKS SATISFACTORY IAW MM 27-31-00.

Part: UNKNOWN — FUMES (CABIN) · airframe 7,651 hrs · 5,132 cycles

FUMES IN CABIN WHEN AIRCRAFT ON THE GROUND AND APU RUNNING WITH APU AIR VALVE OPENED. RAN LT AND RT ENG, APU IAW H/S M/M 49-20 + HS1000 M/M CHAP 80-10-00. OPS CHECK GOOD. NO DEFECTS NOTED.

Part: EXTINGUISHER — INCORRECT (COCKPIT)

REMOVING HAND HELD FIRE EXTINGUISHER FROM THE COCKPIT FOR ROUTINE INSPECTION IT WAS NOTED THAT THE HANDLE DID NOT APPEAR TO BE CORRECT. FURTHER INSPECTION SHOWED THAT THERE ARE TABS ON THE LOWER HANDLE THAT WOULD HAVE PREVENTED THE EXTINGUISHER FROM DISCHARGING. NUMEROUS ATTEMPTS AT DISCHARGING FAILED. IT APPEARS THAT AN INCORRECT HEAD WAS INSTALLED. SUBJECT FIRE EXTINGUISHER WAS REMOVED FROM SERVICE. (K)

Part: POSITION SWITCH — MALFUNCTIONED (MLG) · airframe 6,807 hrs · 4,535 cycles

DEPARTING LIT GEAR SELECTED UP L MAIN GEAR UNSAFE LIGHT ILLUMINATED. 400FT AGL SELECTED FLAPS UP AND GEAR LIGHT EXTINGUISHED. CYCLED LANDING GEAR OPS GOOD. AT 15000 MSL, L MAIN GEAR LIGHT ILLUMINATED AND WOULD NOT EXTINGUISH. ADJUSTED LT MLG DOOR UPLOCK SWITCH IAW HAWKER 100 AAM 32-60-05 OPS GOOD.

Part: WARNING SYSTEM — ACTIVATED (FUEL/ENGINE) · airframe 6,407 hrs · 4,283 cycles

ON TAKEOFF ROLL AT APPROX 65-70 KTS FUEL/ENG LOOK UP LIGHT WITH ASSOCIATED AUX TRANSFER FAULT ILLUMINATED. ITEM IS UNDER INVESTIGATION.

Part: ENGINE — MALFUNCTIONED (LEFT) · airframe 5,255 hrs · 3,524 cycles

LEFT ENGINE SHUTDOWN ON LANDING ROLL OUT, DURING ATTEMPTED START, ITT ROSE TO 680 DEG C, N2 APPROX 30 PERCENT, START ABORTED. TROUBLESHOT ENGINE USING PW305 MM, ATTEMPTED START FOUND ENGINE HUNG STARTED, SUMPED FUEL FOR CONTAMINATION FOUND NONE. REMOVED AND REPLACE P3 SOLENOID VALVE, RAN ENGINE, OPS CHECKED GOOD.

Part: ENGINE — OVERSERVICED (LT & RT ENGINE) · airframe 4,923 hrs · 3,288 cycles

IN FLIGHT DENSE BLACK SMOKE CAME OUT OF THE COPILOTS AIR CONDITIONER VENT. SHORTLY AFTER THAT REAR BAGGAGE SMOKE ANNUNCIATOR ON THE MASTER WARNING PANEL ILLUMINATED.