N523VA

Part: HYDRAULIC SYSTEM — LOW

ON 11/15/2017 THE FLIGHT CREW OF AIRCRAFT N523VA AN A319-112 WITH 33336 FH AND 12557 FC OPERATING VX HAD THE FOLLOWING WRITE-UP INBOUND INTO SFO: HYD B SYS LO PR IN FLIGHT. THE FLIGHT CREW DECLARED A PRECAUTIONARY EMERGENCY AND LANDED WITHOUT INCIDENT. UPON TROUBLESHOOTING THE SFO TECHNICIANS DISCOVERED THE BLUE HYDRAULIC SYSTEM FLUID QUANTITY LOW WITH NO EVIDENCE OF EXTERNAL LEAKS. THE BLUE HYDRAULIC WAS SERVICED TO FULL AND THE SYSTEM WAS LEAKED CHECKED WITHOUT ANY FINDINGS. A FUNCTIONAL CHECK FLI8GHT WAS ACCOMPLISHED WITHOUT ANY FINDINGS AND THE AIRCRAFT WAS RETURNED TO SERVICE. ACCORDING TO THE OPERATOR`S RECORDS, ALL AIRWORTHINESS DIRECTIVES, SERVICE BULLETINS, STC`S AND PMA`S ARE IN FULL COMPLIANCE WITH THE TYPE DESIGN CERTIFICATE AND ASSOCIATED REGULATORY REQUIREMENTS.

Part: POWER SUPPLY — INOPERATIVE (EMERGENCY LIGHTS)

THE EMERGENCY LIGHTS CYCLED ON AND OFF UNCOMMANDED. UPON TROUBLESHOOTING, TECHNICIANS ALSO DISCOVERED EMERGENCY LIGHTS ABOVE L1 DOOR & R1 DOOR, ROW 1, 3, & 4 INOPERATIVE. R & R EPSU BATTERY AT 10WL. OPS CHECKED GOOD IAW AMM 33-15-138 PB401. NO FURTHER REPORTED FAULTS ON SUBSEQUENT FLIGHTS.

Part: POWER SUPPLY — FAILED (EMERGENCY LIGHTS)

DURING AN OVERNIGHT CHECK, FOUND SEATS 11, 12, 15, 16, AND 19-21, EMERGENCY LIGHTS INOPERATIVE. R & R 13WL POWER SUPPLY ASSY IAW AMM 33-51-38-00-00-02, OPS CHECKED, ACFT OK FOR SERVICE.

Part: ISOLATION VALVE — FAILED

LGA WOULD NOT PRESSURIZE AFTER TAKEOFF AND RETURNED TO DEPARTURE. PRIOR TO DEPARTURE THE ACFT DISPLAYED AN AEVC FAULT ON ECAM. DETERMINED THE FAULT WAS CAUSED BY A FAULTY ISOLATION VALVE 24HQ. AFTER LANDING, DISCOVERED SEVERAL EQUIPMENT COOLING DUCTS HAD COLLAPSED OR WERE OTHERWISE DAMAGED. THE DAMAGED DUCTS, AEVC COMPUTER 10 HG AND THE FOLLOWING VALVES 24HQ AND 22HQ WERE REPLACED. NO PREVIOUS OR RECENT HISTORY ON THE EQUIPMENT COOLING SYSTEM OR FURTHER FAULTS ON SUBSEQUENT FLIGHT.

Part: WINDSHIELD — FAILED (COCKPIT)

F/O WINDSHIELD OUTER PANE SHATTERED AT FL380, FLAMES IMMITED UNTIL POWER WAS REMOVED FROM WINDSHIELD EVENTUALLY BY TRIPPING ITSELF. IT IS BELIEVED ONLY ARCING OCCURED AFTER DISCUSSION WITH THE FLIGHT CREW AND DUE TO NO CONCRETE EVIDENCE OF FLAMING, ONLY DAMAGE CONSISTENT WITH ARCING. R & R F/O WINDSHIELD IAW AMM 56-11-11-401. OK FOR SERVICE. IN ADDITION TO WINDOW HEAR CONTROLLER BEING REPLACED.

Part: SCAVENGE PUMP — CONTAMINATED (ENGINE OIL) · airframe 25,655 hrs · 9,326 cycles

ENGINE 2 LOW OIL PRESSURE AND QUANTITY DROPPING UPON TAKEOFF. CREW DECLARED AN EMERGENCY AND LANDED SAFELY. CREW WROTE UP IN LOG BOOK "SHORTLY AFTER ROTATION NOTICED NR 2 ENGINE OIL QTY DROPPING ENGINE CONTINUED TO RUN AND WAS NOT SHUT DOWN UNTIL AFTER LANDING. ALL OTHER PARAMETERS APPEARED NORMAL. QTY REACHED 1 QT PRIOR TO TOUCHDOWN". MAINTENANCE DISCOVERED EMPTY OIL TANK AND DEBRIS ON THE SCAVENGE OIL SCREEN AS WELL. ENGINE NR 2 SN 697990 WITH 21918FH AND 7643FC IS BEING R & R. THE ROOT CAUSE OF FAILURE IS NOT KNOWN AT THIS TIME BUT ONCE ENGINE GETS TO THE SHOP FINDINGS WILL BE AVAILABLE.

Part: REGULATOR VALVE — FAILED · airframe 24,320 hrs · 8,793 cycles

CREW REPORTED A FOUL ODOR IN THE MID CABIN AREA. TECHS ACCOMPLISHED TSM 71-00-00-810-802 WITH NO FINDINGS AND THE AIRCRAFT WAS RETURNED TO SERVICE. THE ACFT FLEW ITS NEXT LEG WITHOUT ANY REPORTED ODORS, ON THE FLIGHT, THE IN-FLIGHT CREW ONCE AGAIN REPORTED A FOUL ODOR IN THE CABIN JUST BEFORE TOUCHDOWN. A HOT AIR FAULT WAS DISPLAYED ON ECAM. TECHS ACCOMPLISHED TSM 24-00-00-810-823A WITH NO FINDINGS. THE HOT AIR REGULATOR VALVE WAS FOUND FAULTY AND WAS REPLACED AT THE NEXT MAINTENANCE OPPORTUNITY. THE ACFT HAS FLOWN 2 FLIGHT SEGMENTS WITH NO FURTHER ISSUES NOTED.

Part: SHEAR PLATE — CORRODED (FUSELAGE)

RIGHT AFT SHEAR PLATE BETWEEN FR69-70, ST23R-24R HAS CORROSION BEYOND LIMITS. EXTENT OF DAMAGE 2" L X 1.5"W X .030 D. SHEAR PLATE WAS R & R IAW SRM 51-42-11.

Part: SHEAR PLATE — CORRODED (FUSELAGE)

LEFT AFT SHEAR PLATE BETWEEN FR69-70, ST23L-24L HAS CORROSION BEYOND LIMITS. EXTENT OF DAMAGE 2" L X 2"W X .040 D. SHEAR PLATE WAS R & R IAW SRM 51-42-11.

Part: FLOOR SUPPORT — CORRODED (CABIN)

FLOOR SUPPORT AT Y766 BETWEEN FR66-68 HAS AN AREA OF CORROSION. FOUND TO BE OUT OF LIMITS SRM 53-00-14. R & R FLOOR SUPPORT IAW SRM 51-42-11.

Part: BEAM — CORRODED (FUSELAGE)

LEFT AFT DOOR SILL BEAM HAS 2 AREAS OF CORROSION BETWEEN FR67-68, ST23L-24L AT Y1725, THE EXTENT OF THE DAMAGE IS 1"L, X .5" W X .055 D. THE SECOND AREA IS 1" L X .5" W X .060 D. THE AREA WAS REPAIRED IAW SRM 53-41-14, FIG 201, REPAIR PRINCIPLES.

Part: BEAM — CORRODED (FUSELAGE)

RT AFT DOOR SILL BEAM HAS 2 AREAS OF CORROSION BETWEEN FR67-68, ST23R-24R AT Y1725. THE EXTENT OF THE DAMAGE IS 1"L X .5"W X .050"D, THE SECOND AREA IS 1"L X .5"W X .050" D. THE AREA WAS REPAIRED IAW SRM 53-41-14, FIG 201, REPAIR PRINCIPLES.

Part: SHEAR PLATE — CORRODED (FUSELAGE)

LEFT AFT SHEAR PLATE SUPPORT BETWEEN FR69-70, ST23L-24L HAS CORROSION BEYOND LIMITS. EXTENT OF DAMAGE 2"L X 1.5" W X .020 D. SUPPORT BELOW SHEAR PLATE WAS R & R IAW SRM 51-42-11.

Part: FLOOR SUPPORT — CORRODED (CABIN)

FLOOR SUPPORT AT Y765 BETWEEN FR66-67 HAS AN AREA OF CORROSION. FOUND TO BE OUT OF LIMITS SRM 53-00-14. R & R FLOOR SUPPORT IAW SRM 51-42-11.

Part: FLOOR SUPPORT — CORRODED (CABIN)

FLOOR SUPPORT DIRECTLY INBD OF Y765 BETWEEN FR68-70 HAS AN AREA OF CORROSION, FOUND TO BE OUT OF LIMITS SRM 53-00-14. R & R FLOOR SUPPORT IAW SRM 51-42-11.

Part: RESERVOIR — LOW PRESSURE (DOOR SLIDE) · airframe 17,519 hrs · 5,967 cycles

ON INSPECTION FOUND LT SLIDE RESERVOIR BOTTLE POSITION 7506MM, PRESSURE LOW. R & R OFFWING ESCAPE SLIDE RESERVOIR ALL OPS CHECKED GOOD NO OTHER FAULTS NOTED IAW AMM 25-62-46-020-050A.

Part: EPSU — INOPERATIVE (CABIN) · airframe 15,454 hrs · 5,358 cycles

DURING ACCOMPLISHMENT OF THE 3000 FH TASK CARDS AND THE TEST OF THE EMERGENCY EXIT LIGHTS, IT WAS NOTED SEVERAL ROWS WERE INOPERATIVE. TROUBLESHOOTING REVEALED THE EMERGENCY POWER SUPPLY UNITS (EPSU), FIN`S 11WL AND 12WL, WERE AT FAULT. IT WAS ALSO NOTED THAT THE EMERGENCY EXIT PATH LIGHT ASSEMBLIES AT ROWS 9 AND 10 LEFT WERE INOPERATIVE. THE ACFT WAS TAKEN OUT OF SERVICE. THE EPSU`S AND BATTERY PACKS FIN`S 11/12WL, WERE REPLACED IAW AMM 33-51-38. OPS CHECKS WERE OK. THE EMERGENCY EXIT PATH LIGHT AT ROW 9LT WAS REPLACED IAW AMM 33-51-19 AND OPERATIONALLY CHECKED OK. THE EMERGENCY EXIT PATH LIGHT AT ROW 10 LH WAS PLACED ON MEL 33-50-03-1. THE ACFT WAS PLACED BACK INTO SERVICE.