A DHC8-200 WAS OPERATED FOR 5 DAYS IN NON COMPLIANCE WITH AN ENG FIRE EXTINGUISHER BOTTLE SQUIB OVER LIFE LIMIT.

Narrative

ON JUN/XA/01 AN INCORRECT ENG FIRE BOTTLE SQUIB WAS REMOVED AND REPLACED ON ACR DASH 8/200 ACFT. THE POS SPECIFIED FOR REMOVAL WAS 'FWD 2.' THIS ACFT HAS 2 ENG FIRE BOTTLES MOUNTED ONE BEHIND THE OTHER AT THE L-HAND WING ROOT; WITH 2 DISCHARGE SQUIBS PER BOTTLE. THE SQUIB IS NOT A SERIALIZED PART FROM THE MANUFACTURER; BUT ACR ENGRAVES A COMPANY SERIAL NUMBER FOR TIME TRACKING OF THE PART. CONFUSION IS CAUSED BY THE ACR POS DESCRIPTION 'FWD 2' AS 'FWD' CAN REFER TO A BOTTLE OR SQUIB; JUST AS '2' CAN REFER TO A BOTTLE OR SQUIB. 'BOTTLE' OR 'SQUIB' NEEDS TO BE ADDED TO THE LOCATION DESCRIPTION TO AVOID CONFUSION. THE OTHER POS WERE CHKED BY FLASHLIGHT AND MIRROR; BUT THE SERIAL NUMBER REQUESTED TO BE REMOVED WAS NOT LOCATED THIS NIGHT. THESE SERIAL NUMBERS SHOULD BE STAMPED INTO THE HEX PORTION OF THE PART; NOT LIGHTLY ENGRAVED. AS A RESULT OF THIS; THE PART STAYED ON THE ACFT 5 MORE DAYS; AND WAS REMOVED JUN/XF/01 AT THE ZZZ MAINT BASE. THIS OVERFLEW THE TARGET DATE OF A TIME LIMITED PART.