N732KA

Part: SUPPORT FITTING — CORRODED (BS 947) · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE AFT LAVATORY INBOARD SUPPORT FITTING. STATION 947, LBL 25, WL208.

Part: DOOR SILL — CORRODED (CABIN) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE L1 DOOR LOWER SILL WEB (MOP SILL) AND C CHANNEL.

Part: FLOORBEAM — CORRODED (ZONE 100) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE UPPER SURFACE OF THE UPPER CHORD OF THE FLOORBOARD FLOOR SUPPORT @STATION 360, RBL 5 TO RBL 66.

Part: FLOORBEAM — CORRODED (ZONE 100) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE UPPER SURFACE OF THE UPPER CHORD OF THE FLOORBOARD FLOOR SUPPORT @STATION 986.5, LBL 25 TO RBL 24.

Part: FLOORBEAM — CORRODED (BS 312) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE UPPER SURFACE OF THE UPPER CHORD OF THE FLOORBOARD FLOOR SUPPORT @ STATION 312, RBL 8, WL208.

Part: FLOORBEAM — CORRODED (BS 344) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE UPPER SURFACE OF THE UPPER CHORD OF THE FLOORBOARD FLOOR SUPPORT @ STATION 344, LBL 66 TO RBL 10.

Part: DOOR SILL — CORRODED (CABIN) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE L2 DOOR LOWER SILL INNER CHORD (MOP SILL) AND WEB.

Part: CHANNEL — CORRODED (BS 482) · corrosion level 2 · airframe 46,306 hrs · 39,695 cycles

CORROSION FOUND ON THE FORWARD CARGO SIDE PLATE (Z CHANNEL) AT RBL 21.8 BETWEEN BS 482 AND BS 482A.

Part: SKIN — CORRODED (WING) · airframe 46,111 hrs · 39,564 cycles

CORROSION FOUND ON THE UPPER SURFACE OF THE LEFT AND RIGHT WINGS ALONG STRINGER HI-LOK ROWS. LEFT WING LOCATION STRINGERS S-11 AND S-12 FROM APPROX WBL 183.4 TO WSTA 479. RIGHT WING LOCATION STRINGERS S-10, S-11 AND S-12 FROM APPROX WBL 70.85 TO WSTA 505.00. BOEING ENGINEERING CONTACTED FOR REPAIRS.

Part: CHECK VALVE — CORRODED (ENGINE) · airframe 46,023 hrs · 39,505 cycles

ENGINE BLEED AIR 5TH STAGE CHECK VALVES ON BOTH ENGINES INSPECTED FOR EMERGENCY AD 2020-16-51. BOTH CHECK VALVES SHOW SIGNS OF CORRODED FLAPPER PLATES, BUSHINGS AND WILL BE REPLACED.

Part: DOOR FRAME — CORRODED (EMERGENCY EXIT) · airframe 45,905 hrs · 39,415 cycles

CORROSION FOUND ON THE BOTTOM FRAME ON THE LEFT OVERWING ESCAPE HATCH. MATERIAL THICKNESS REMAINING AFTER CORROSION REMOVAL FROM THE DOOR NOT WITHIN THE LIMITS OF SRM 52-20-02. REPLACED THE LEFT OVERWING ESCAPE HATCH.

Part: DOOR FRAME — CORRODED (EMERGENCY EXIT) · airframe 45,905 hrs · 39,415 cycles

CORROSION FOUND ON THE BOTTOM FRAME ON THE RIGHT OVERWING ESCAPE HATCH. MATERIAL THICKNESS REMAINING AFTER CORROSION REMOVAL FROM THE DOOR NOT WITHIN THE LIMITS OF SRM 52-20-02. REPLACED THE RIGHT OVERWING ESCAPE HATCH.

Part: PUMP — INTERMITTENT (FUEL BOOST) · airframe 45,515 hrs · 39,149 cycles

LEFT CENTER FUEL TANK BOOST PUMP LOW PRESSURE LIGHT CAME ON. RESET SWITCH AND WORKED INTERMITTENTLY. REPLACED LEFT CENTER FUEL TANK BOOST PUMP AND OPERATIONAL CHECK NORMAL.

Part: GENERATOR — INOPERATIVE (APU) · airframe 45,515 hrs · 39,149 cycles

APU GENERATOR WOULD NOT COME ONLINE WHEN SELECTED ON AFTER APU START. REPLACED APU GENERATOR AND OPERATIONAL CHECKED NORMAL.

Part: SWITCH — INTERMITTENT (ZONE 100) · airframe 45,500 hrs · 39,140 cycles

INTERMITTENT LEFT DUCT OVERHEAT LIGHT ON WITH NORMAL DUCT TEMPERATURE INDICATION. DETERMINED TO BE AN INDICATION PROBLEM. REPLACED THE 190 DEGREE AND 250 DEGREE SWITCHES IN THE AIR CONDITIONING DUCT/PLENUM. OPERATIONAL CHECK NORMAL.

Part: FUEL CONTROL — FAILED (APU) · airframe 45,500 hrs · 39,140 cycles

APU SHUTDOWN AFTER AN HOUR OF RUN TIME ON THE GROUND. PUT A PRESSURE GAUGE IN THE FUEL LINE BETWEEN THE FUEL CONTROL AND FUEL ATOMIZER. FOUND FUEL PRESSURE AT 25 PSI WITH A REQUIREMENT FOR 50-60 PSI. REMOVED FUEL CONTROL UNIT AND FOUND DRIVE SHAFT SHEARED. REPLACED THE FUEL CONTROL UNIT AND OPERATIONAL CHECK NORMAL.

Part: SENSOR — FAULTY (CABIN AIR SYS) · airframe 45,486 hrs · 39,132 cycles

DUCT PNEUMATIC PRESSURE DURING CRUISE WAS 40 PSI BUT VERY LOW FLOW IN CABIN. FOUND LEFT 35 DEG SENSOR FAULTY. REPLACED THE SENSOR AND OPS CHECKED OK.

Part: CONTROL VALVE — INTERMITTENT (APU BAY) · airframe 45,486 hrs · 39,132 cycles

APU DRAGS DOWN DURING MAIN ENGINE START. REPLACED APU PROPORTIONAL CONTROL VALVE. ENGINE START AND APU OPERATIONAL CHECKS NORMAL.

Part: CONTROL VALVE — LEAKING (APU BAY) · airframe 45,483 hrs · 39,127 cycles

UNSTABLE CABIN PRESSURIZATION. PERFORMED FUNCTIONAL CHECK OF CABIN PRESSURIZATION CONTROLLER WITH NO FAULTS FOUND. FOUND RESIDUAL PRESSURE IN THE BLEED AIR MANIFOLD WITH APU NOT RUNNING. REPLACED THE APU LOAD CONTROL VALVE.

Part: START VALVE — INTERMITTENT (RT ENGINE) · airframe 45,480 hrs · 39,123 cycles

START VALVE ON RIGHT ENGINE WAS INTERMITTENT OR SLOW TO OPEN WHEN START WAS INITIATED. REPLACED START VALVE AND OPERATIONAL CHECK NORMAL.

Part: ACCESSORY UNIT — FAULTY (LEFT A/C PACK) · airframe 45,480 hrs · 39,123 cycles

DURING AIR CONDITIONING PACK OPERATION ON THE GROUND, LEFT AIR CONDITIONING PACK INDICATED A PACK TRIP AND DUCT OVERHEAT AT PACK START UP. INDICATION FOR THE DUCT TEMPERATURE DID NOT SHOW A DUCT OVERHEAT. DETERMINED THIS TO BE AN INDICATION PROBLEM USING THE FIM. REPLACED THE AIR CONDITIONING ACCESSORY UNIT AND OPERATIONAL CHECK WAS NORMAL.

Part: SKIN — CORRODED (LT WING) · corrosion level 3 · airframe 45,454 hrs · 39,105 cycles

LEVEL 3 CORROSION FOUND ON THE UPPER SURFACES OF THE LEFT AND RIGHT WING UNDER THE EMERGENCY EXIT WING WALK PAINT. RIGHT WING UPPER SURFACE LOCATIONS STRINGERS 2,3,4,5,7,8 AND REAR SPAR AT APPROX WBL 71.24-92.5. LEFT WING UPPER SURFACE LOCATIONS STRINGERS 1,4,5,9 AND REAR SPAR AT APPROX WBL 71.24-92.5 AND 165-235. CORROSION DEPTH IS GREATER THAN THE SRM LIMITS AND REQUIRES ENGINEERING FOR REPAIRS.

Part: CONTROLLER — LOOSE (COCKPIT) · airframe 43,351 hrs · 39,029 cycles

THE STANDBY ALT SELECT KNOB ON THE PRESSURIZATION PANEL WAS FOUND TO BE INTERMITTENTLY SLIPPING INTERNALLY WHEN ATTEMPTING TO MAKE NUMBER CHANGES. REPLACED THE PANEL AND OPERATIONAL CHECK NORMAL.

Part: OIL SYSTEM — LOW (ACM) · airframe 45,300 hrs · 38,986 cycles

PERFORMED AN OIL QUANTITY INSPECTION ON THE LEFT PACK AIR CYCLE MACHINE. FOUND THE OIL LEVEL BELOW LIMITS IN THE SIGHT GLASS AND SIGNS OF FLUID LEAKAGE FROM THE AIR CYCLE MACHINE. REPLACED THE LEFT PACK AIR CYCLE MACHINE.

Part: STARTER — MAKING METAL (RT ENGINE) · airframe 45,300 hrs · 38,986 cycles

PERFORMED ENGINE STARTER CHIP DETECTOR INSPECTION. FOUND EXCESSIVE METAL PARTICLES ATTACHED TO THE CHIP DETECTOR. REPLACED ENGINE STARTER.

Part: ACTUATOR — LEAKING (NLG) · airframe 45,288 hrs · 38,982 cycles

NOSE LANDING GEAR RETRACT ACTUATOR FOUND LEAKING HYDRAULIC FLUID. REPLACED ACTUATOR AND OPERATIONAL & LEAK CHECKED OK.

Part: HEATER — INOPERATIVE (PITOT HEAD) · airframe 45,288 hrs · 38,982 cycles

AMBER "L ELEV PITOT" LIGHT ILLUMINATED. THIS LIGHT INDICATES A PROBLEM WITH THE ELEVATOR FEEL PITOT PROBE HEATER. REMOVED PROBE AND FOUND INTERNAL HEATER FAILED. REPLACED PITOT PROBE AND OPERATIONAL CHECK NORMAL.

Part: PUMP — LEAKING (HYDRAULIC SYS) · airframe 45,288 hrs · 38,982 cycles

RIGHT ENGINE HYDRAULIC PUMP FOUND LEAKING HYDRAULIC FLUID FROM SHAFT SEAL DRAIN. REPLACED PUMP AND OPERATIONAL CHECKED NORMAL.

Part: ACCESSORY UNIT — DEFECTIVE (E/E COMPARTMENT) · airframe 45,142 hrs · 38,894 cycles

LEFT DUCT OVERHEAT LIGHT ON, IAW FIM REPLACED AIR CONDITIONING ACCESSORY UNIT.

Part: MIXING VALVE — INTERMITTENT (A/C PACK) · airframe 45,142 hrs · 38,894 cycles

DURING AIR CONDITIONING OPERATIONAL CHECKS, LT MIXING VALVE WAS FOUND TO BE STICKING AND INTERMITTENT. REPLACED MIXING VALVE.

Part: CONTROLLER — DEFECTIVE (CABIN TEMP) · airframe 45,142 hrs · 38,894 cycles

LEFT DUCT OVERHEAT LIGHT ON, IAW THE FIM REPLACED THE CABIN TEMPERATURE CONTROLLER.

Part: DAU — FAILED (ZONE 100) · airframe 45,124 hrs · 38,882 cycles

DIGITAL FLIGHT DATA ACQUISITION UNIT CIRCUIT BREAKER POPPED AND WOULD NOT RESET. REPLACED DFDAU AND OPERATIONAL CHECK NORMAL.

Part: DAU — INTERMITTENT (COCKPIT) · airframe 45,124 hrs · 38,882 cycles

RIGHT WING FUEL QUANTITY INDICATOR INTERMITTENTLY DISPLAYED "0" WITH CODES 1, 2, 3, 5, 7, 10. IAW TROUBLESHOOTING WITH THE FAULT ISOLATION MANUAL, REPLACED THE RIGHT FUEL QUANTITY INDICATOR AND DIGITAL CALIBRATION TRIM UNIT ATTACHED TO THE INDICATOR. PERFORMED OPERATIONAL CHECKS WITH NO DEFECTS NOTED.

Part: CONTROL VALVE — LOOSE (APU) · airframe 45,118 hrs · 38,877 cycles

FOUND PROPORTIONAL CONTROL VALVE BODY LOOSE. VALVE IS LOCATED ON LOWER SIDE OF THE APU. REPLACED VALVE AND OPERATIONAL CHECK NORMAL.

Part: FUEL CONTROL — MALFUNCTIONED (APU) · airframe 45,118 hrs · 38,877 cycles

APU WOULD HANG AT 250-300 DEGREES FOR APPROXIMATELY 30 SECONDS DURING START AND THEN ACCELERATE. APU WAS MAKING CHUGGING EXHAUST NOISES WHEN RUNNING. SB GTCP85-49-7484 INCORPORATES A NEW FUEL CONTROL, PN 3617750-1 AND ATOMIZER/LINER ASSEMBLY TO IMPROVE START TIMES. REPLACED THE FUEL CONTROL AND ATOMIZER/LINER ASSEMBLY IAW THE SB AND AMM. APU STARTS MUCH QUICKER NOW AND NO LONGER MAKES CHUGGING NOISES WHEN OPERATING.

Part: LINER — DAMAGED (APU) · airframe 45,118 hrs · 38,877 cycles

APU WOULD HANG AT 250-300 DEGREES FOR APPROXIMATELY 30 SECONDS DURING START AND THEN ACCELERATE. APU WAS MAKING CHUGGING EXHAUST NOISES WHEN RUNNING. SB GTCP85-49-7484 INCORPORATES A NEW FUEL CONTROL AND ATOMIZER/ LINER ASSEMBLY, PN 3604524-54 TO IMPROVE START TIMES. REPLACED FUEL CONTROL AND ATOMIZER/LINER ASSEMBLY IAW THE SB AND AMM. APU STARTS MUCH QUICKER NOW AND NO LONGER MAKES CHUGGING NOISES WHEN OPERATING.

Part: ELECTRONIC UNIT — INTERMITTENT (COCKPIT) · airframe 45,007 hrs · 38,811 cycles

OBSERVER SEAT HAND MIKE HAD NO AUDIO. REPLACED THE REMOTE ELECTRONICS UNIT. OPERATIONAL CHECKED NORMAL.

Part: DISPLAY — DEFECTIVE (COCKPIT) · airframe 45,007 hrs · 38,811 cycles

LEFT ENG FUEL FLOW WAS INTERMITTENTLY DISPLAYED ON THE EIS PRIMARY DISPLAY. TROUBLESHOOTING OF THE FUEL FLOW TRANSMITTER & ASSOCIATED WIRING FOUND NO DEFECTS. THE EIS PRIMARY DISPLAY WAS REPLACED & FUEL FLOW INDICATION IS NORMAL.

Part: INDICATOR — FAILED (COCKPIT) · airframe 44,989 hrs · 38,802 cycles

VMU FLAG APPEARED ON CAPTAIN'S ASI & BARBER POLE DID NOT MATCH FIRST OFFICERS SIDE. REPLACED DEFECTIVE AIRSPEED INDICATOR. OPERATIONAL CHECKED NORMAL.

Part: CARBON SEAL — LEAKING (RT ENGINE) · airframe 44,989 hrs · 38,802 cycles

REPLACED CARBON SEALS FOR THE RT ENG HYD PUMP, CSD & MEC TO IMPROVE ENG OIL CONSUMPTION.

Part: CARBON SEAL — LEAKING (RIGHT ENGINE) · airframe 44,965 hrs · 38,793 cycles

EXCESSIVE OIL LEAK FROM NR 2 ENGINE. BAGGED ACCESSORY GEARBOX PAD SEAL DRAINS AND OPERATED ENGINE. FOUND STARTER PAD SEAL DRAIN LEAKING. REPLACED CARBON SEAL AND OPERATIONAL CHECK NORMAL.

Part: ADC — FAILED (E&E BAY) · airframe 44,902 hrs · 38,753 cycles

ON APPROACH, THE FIRST OFFICERS AIRSPEED INDICATOR & ALTIMETER FAILED WITH ALL FLAGS SHOWN. DURING TROUBLESHOOTING THE AIR DATA COMPUTER WOULD NOT TEST. THE AIR DATA COMPUTER WAS REPLACED. LEAK & OPERATIONAL CHECKS WERE ACCOMPLISHED WITH NO WARNING INDICATIONS SHOWN.