N724QS

Part: CONTROL BOX — INOPERATIVE (ANTI-SKID SYSTEM) · airframe 6,573 hrs · 4,038 cycles

NORMAL BRAKING SYS INTERMITTENT. AFTER LANDING, WITH NORMAL BRAKING, LOST BRAKING. INCREASED PEDAL FORCE AND APPROXIMATLEY 2 TO 3 SECONDS BRAKING RETURNED. HAPPENED TWICE ON TAXI TO RAMP. REMOVED AND REPLACED ANTISKID CONTROL BOX IAW CMP 324501. PERFORMED ANTISKID LOCK WHEEL PROTECTION-FUNCTIONAL TEST IAW CMP 324030.

Part: VALVE — FAILED (BRAKE SYSTEM) · airframe 6,562 hrs · 4,030 cycles

NORMAL BRAKING SYS INTERMITTENT. AFTER NORMAL LANDING WITH NORMAL BRAKES, LOST ALL BRAKING POWER WHILE TAXIING. CAME BACK WITH TWO LOUD THUMPS. AFTER RELEASING AND REAPPLYING THE BRAKES, SAME EVENT HAPPENED AGAIN. SELECTED EMERGENCY BRAKES AND TAXIED TO A STOP. POST FLIGHT INSPECTION OF GEAR SHOWED NO LEAKS. ALL PRESSURES AND QUANTITIES WERE NORMAL. R & R THE POWER BRAKE VALVE IAW MM 32-40-20. BLED BRAKE SYS AND PERFORMED ADJUSTMENT TEST IAW 32-40-20.

Part: SWITCH — OUT OF ADJUST (WOW) · airframe 6,276 hrs · 3,862 cycles

DURING TAXI AT SLOW SPEEDS, LESS THAN 10 KNOTS, WHILE APPLYING CONSTANT PRESSURE TO THE BRAKES, THE BRAKES FAILED. WHEN TOE BRAKES WERE RELEASED, MOMENTARILY BRAKES RETURNED TO NORMAL. PERFORMED MULTIPLE TIMES ALL A VERY SLOW SPEEDS, MOST OF THE TIME WHILE MAKING A LEFT TURN. HYD PRESSURE WAS NORMAL WITH NO EICAS MESSAGES. ALL OPERATIONS DURING THE LANDING ROLL OUT WERE NORMAL. AFTER REVIEWING FAULT HISTORY, DETERMINED PROBLEM COULD BE CAUSED BY A WOW ISSUE. PERFORMED WOW FUNCTIONAL TEST OF THE NOSE GEAR AND NO FAULTS FOUND. PERFORMED WOW FUNCTIONAL TEST ON BOTH MAIN LANDING GEARS AND FOUND BOTH WOW SWITCH ADJUSTMENTS TO BE WAY OUT OF TOLERANCE. ADJUSTED BOTH MLG WOW SWITCHES AND PERFORMED FUNCTIONAL TESTS AND AIR BRAKES SYS FUNCTIONAL TEST WITH NO DEFECTS NOTED. ALL WORK PERFORMED IAW MM 32-60-10, MM 32-60-05, AND CMP 276016.

Part: VALVE — MALFUNCTIONED (BRAKES) · airframe 6,231 hrs · 3,826 cycles

ON LANDING, HAD TO APPLY MUCH MORE FORCE THAN NORMAL TO GET ANY EFFECTIVENESS OUT OF THE BRAKES. SLOWING THROUGH 80 KIAS THE BRAKES GRABBED EXTREMELY HARD, BUT EVENLY. IT GRABBED AND RELEASED AS IF THE ANTI-SKID WAS WORKING, BUT MORE VIOLENTLY. AFTER PARKING THE NR 2 AND NR 4 WHEELS WERE TOO HOT TO TOUCH AND BOTH ASSY WERE SMOKING. PERFORMED THE OPTIONAL BRAKE WEAR INSPECTION AND FOUND ALL BRAKES WITHIN WEAR LIMITS IAW G-200 MM CH 32-40-20. CHECKED POWER BRAKE VALVE, OPS CHK GOOD IAW G200 MM CH 32-40-45. PERFORMED PARKING SYSTEM FUNCTIONAL TEST, VERIFIED PROPER OPERATION OF PARK BRAKE RETURN CHECK VALVE, OPS CHK GOOD IAW MM 32-40-20. REMOVED ALL MLG WHEEL CAPS TO INSPECT ANTISKID TRANSDUCER DRIVE TABS ON HUB CAP. REMOVED AND REPLACED NR 2 AND NR 4 POWER BRAKE ANTI-SKID TRANSDUCERS WITH OVERHAULED UNITS IAW MM. 32-40-35. PERFORMED FUNCTIONAL CHECK ON ALL FOUR ANTI-SKID TRANSDUCERS IAW MM 32-40-30. FUNCTIONAL CHECKED GOOD.

Part: SWITCH — INOPERATIVE (MLG WOW) · airframe 4,318 hrs · 2,606 cycles

REMOVED AND REPLACED LT MLG HARNESS IAW CMP 321601. OP TESTED MAIN LANDING GEAR WOW SW IAW MM 82-60-05. PERFORMED BRAKES FUNCTIONAL TEST IAW CMP 276016. PERFORMED ANTISKID TOUCHDOWN PROTECTION FUNCT TEST IAW MM 82-40-30. PERFORMED ANTISKID LOCK WHEEL PROTECTION FUNCTION TST IAW MM 32-40-30. REACTIVATED T/R'S IAW 78-00-00. PERFORMED OPS CHECK OF LT ENGINE T/R IAW 78-30-00. T/R FAIL CAS STILL PRESENT. ELECTRICAL T/S PERFORMED ON LT ENG T/R SYS REF WDM 78-30-11.

Part: THRUST REVERSER — MALFUNCTIONED (LEFT) · airframe 4,318 hrs · 2,606 cycles

LT T/R FAIL MESSAGE CAME ON AFTER T/O AND REMAINED ON FOR DURATION OF FLIGHT.

Part: LINK — OUT OF ADJUST (MLG)

MAIN LANDING GEAR FAILS TO FULLY RETRACT. PEFORMED MLG UPLOCK RIGGING & FUNCTIONAL PER MM 32-10-10. FOUND LT & RT MLG OUTBD DOOR SPRING LINKS TO BE OUT OF ADJUSTMENT. ADJUSTED/RIGGED MLG OUTBD DOOR SPING LINKS IN REFEREANCE TO MM 32-10-15.

Part: UNKNOWN — MALFUNCTIONED (MLG)

AFTER TAKEOFF WHEN GEAR SELECTOR HANDLE WAS MOVED UP BOTH L & R GEAR INDICATORS INDICATED RED HASH MARKS. JACKED ACFT AND CYCLED GEAR WITH AUX PUMP SEVERAL TIMES WITH NO MALFUNCTION. ATTACHED HYDRAULIC MULE AND PERFORMED 15 GEAR SWINGS. OPS TEST GOOD. REF G200 AMM 32-30-00

Part: BUSHING — WORN (RUDDER)

CLIMBING THROUGH 5000 FT/250KTS/SMOOTH AIR VIBRATION FELT THROUGH OUT FLIGHT DECK. VIBRATION NOTICED DURING DESCENT AS WELL. REMOVED AND REPLACED UPPER AND LOWER RUDDER TRIM TAB BUSHINGS 2 WITH NEW BUSHINGS. FOR WORK ACCOMPLISHED REF MM 27-20-00

Part: FIRE LOOP — FAILED (RT ENGINE) · airframe 1,992 hrs · 1,205 cycles

RT ENG FIRE DETECT CAS MSG ILLUMINATED RT AFTER ENGINE START. REPLACED RIGHT ENGINE ZONE 2 DETECTOR & FIRE LOOP CMP 261102 W/O REF FL008823

Part: UNKNOWN — ODOR (COCKPIT) · airframe 3,532 hrs · 2,133 cycles

AFTER TAKEOFF HAD A SMOKE OIL ODOR IN THE COCKPIT FOR ABOUT 10- 20 SECONDS, THEN IT WENT AWAY. LATER INFLIGHT THE PASSENGERS CAME UP AND SAID THAT THEY SAW A SMOKE HAZE BEHIND THE GALLEY IN THE MAIN CABIN . INSPECTED AMPLIFIER AND CONNECTIONS BEHIND GALLEY. NO DEFECTS NOTED. GROUND RAN AIRCRAFT WITH CREW AT FULL POWER NO ODOR OR SMOKE NOTED. FOR DETAILS REF FAS WO 06-2757.KVNY-KTEB.

Part: APU — ODOR (APU BAY) · airframe 1,768 hrs · 1,083 cycles

WITH APU RUNNING - ECS IN APU NOTED FUEL ODOR IN AFT CABIN IN LAV AREA. FURTHER INSPECTION FOUND ODOR TO BE MOST PRONOUNCED IN SMALL CABINET BELOW LAV CLOSET HOUSING AIRSHOW BOXES - A/C HAD APPROX 1600 LBS OF FUEL ON BOARD. NO FUEL ODOR FROM GASPERS. RAN APU FOR MORE THAN AN HOUR IN THE -APU- MODE ON THE ECS. VARIED TEMPERATURES FROM HOT TO COLD BUT NEVER SMELLED FUEL IN THE CABIN. OPS CHECK OF APU GOOD AT THIS TIME. GULFSTREAM G200 MM/49-00-00. NO FUEL NOTED BENEATH LAV CLOSETS AT THIS TIME. KLFT-KDTS