N525KY

ATA 2130

Part: CABIN PRESS SYS — FAULTED · airframe 6,813 hrs · 5,496 cycles

STARTED ENGINES AT 2W6 AT 1948 LOCAL. TAXIED TO RUNWAY 11, GOT A CLEARANCE, AND TOOK OFF AT 2007, AND REACHED FLIGHT LEVEL 450 AT 2047. WE STARTED THE DESCENT AT ABOUT 2121:30. AT FL360 (2129:30), WE GOT THE DOOR SEAL ANNUNCIATION. ISAIAH STARTED INCREASING HIS DESCENT RATE. IMMEDIATELY FELT MY EARS POPPING BECAUSE OF THE RISING CABIN ALTITUDE. TOLD ATC WE WOULD NOT BE LEVELING AT 34000. THE CONTROLLER GAVE ME 28000. THE DECOMPRESSION WAS SLOW, BUT NOT STOPPING. WE GOT THE RED CABIN ALTITUDE ANNUNCIATION, PUT O2 MASKS ON, AND LET ATC KNOW THAT WE WERE LOSING PRESSURE IN THE CABIN AND COULD NOT LEVEL AT ALL. ATC TURNED US 15 DEGREES RIGHT AND THEN GAVE US 18000. FO REQUESTED THE CHECKLIST WHICH WE COMPLETED. WE WERE ASKED FOR SOULS ON BOARD (8), FUEL REMAINING (1.5 HOURS), AND IF THERE WERE ANY INJURIES (NONE). THE PRESSURIZATION SYSTEM STARTED WORKING AGAIN AT 20000FT (2133:42) AND THE CABIN STARTED PRESSURIZING AGAIN AT 400FT/MIN. WE CONTINUED DOWN TO 12000FT AT ABOUT 80 MILES OUT.

ATA 5210

Part: LINE — CONTAMINATED (DOOR SEAL) · airframe 6,808 hrs · 5,491 cycles

WHILE CRUISING LEVEL AT FL450, APPROX 40NM SW OF KBNA, ENROUTE FROM KXNA TO KCAE WITH ONE, CREW NOTICED A HISSING NOISE COMING FROM THE MAIN DOOR AREA. VERY SHORTLY AFTER, CREW RECEIVED A MASTER CAUTION LIGHT CONCURRENTLY WITH A DOOR SEAL LIGHT. CREW DONNED O2 MASKS, REQUESTED LOWER ALTITUDE FROM ATC WHILE INITIATING AN EMERGENCY DESCENT. WITHIN A MINUTE, MASTER WARNING LIGHT ILLUMINATED CONCURRENTLY WITH A CABIN ALTITUDE LIGHT. CABIN ALTITUDE REACHED APPROX 15,000 FT, THAT ACTIVATED THE CABIN ALTITUDE MASKS. PAX DONNED O2 MASK AS ADVISED. ATC DECLARED AN EMERGENCY. NOTIFIED ATC OF ITS INTENTION TO DIVERT TO KBNA. ATC CLEARED THE ACFT TO 10,000 FT, DIRECT KBNA WHERE A NORMAL LANDING OCCURRED. THROUGH INVESTIGATION, FOUND MOISTURE IN SERVICE AIR LINES LEADING TO THE DOOR SEAL SYS. RECOMMENDED TO PERFORM SB 525A-36-04, WHICH INSTALLS A MOISTURE TRAP IN THE LINES. ACFT WILL BE SCHEDULED TO GET THE SB COMPLIED WITH. IN INTERIM, WILL HAVE CREWS COMPLY WITH MC525A-003.

ATA 2130

Part: REGULATOR — FAILED (CABIN PRESSURE) · airframe 6,739 hrs · 5,432 cycles

IN-FLIGHT AT 38,000 FT, DOOR SEAL ANNUNCIATOR ILLUMD. RAN CORRESPONDING EMERG CHKLIST. BEGAN DESCENT TO 31,000 FT & DONNED OXYGEN MASKS, A POP WAS HEARD, FOLLOWED BY A HISSING SOUND. THEN, THE CABIN ALT ANNUNCIATOR & MASTER WARNING LIGHTS CAME ON AS CABIN ALTITUDE RISING. COMPLETED THE MEMORY ITEMS FOR CABIN ALT PROCEDURE, BEGAN EMERGENCY DESCENT, & HALTED DOOR SEAL CHECKLIST TO COMPLETE CABIN ALT CHKLST. IN DESCENT, DECLARED AN EMERGENCY WITH ATC & DESCENDED TO 10,000 FT. ALSO CONTINUED TO MONITOR CABIN ALTITUDE METER. HIGHEST READING WAS APPROX 14,000-14,500 FT & STABLE DURING THE EMERGENCY DESCENT. ON REACHING A SAFE ALTITUDE, RECOVERED FROM THE DESCENT & BRIEFED PAX ON WHAT HAPPENED. DECIDED HAD SUFFICIENT FUEL AT SAID ATTITUDE TO CONTINUE TO DESTINATION. CONTINUED TO DESTINATION WITHOUT FURTHER EVENT.

ATA 5210

Part: TRIGGER — BROKEN (ZONE 800) · airframe 5,098 hrs · 4,046 cycles

UPON LANDING IN BCT, CREW ATTEMPTED TO EXIT AIRCRAFT THROUGH MAIN CABIN DOOR, THEY WERE UNABLE TO ACTUATE THE TRIGGER ON THE DOOR HANDLE, AND THUS UNABLE TO MOVE THE DOOR HANDLE TO THE OPEN POSITION. LINE SERVICE OPENED DOOR FROM THE OUTSIDE, ALLOWING CREW TO DISEMBARK. UPON INSPECTION, FOUND TRIGGER STOP (UPPER MOST PORTION OF TRIGGER P/N 5519055-14) BROKE OFF FROM THE REST OF THE TRIGGER AND WAS JAMMED BEHIND TRIGGER, PREVENTING TRIGGER FROM BEING ABLE TO ACTUATE. REPLACED TRIGGER P/N 5519055-14 WITH NEW, OPS CHECK WAS GOOD.

ATA 3350

Part: BATTERY PACK — FAILED

DURING DOC 10 FOUND L/H EMERGENCY EXIT LIGHTING BATTERY PACK DRAINED AND WILL NOT TAKE A CHARGE. R&R P/N CBS28-1 WITH A REPAIRED UNIT. OPS CHECK GOOD. WORK PERFORMED IAW CE525A AMM REV19 CH. 33-50-00