What was found
OXYGEN SYSTEM LEAKING AT A RATE OF 3 TO 4 PERCENT OF TOTAL VOLUME IN A 24 HOUR PERIOD. VISUAL INSPECTION OF SUSPECT LINE P/N 38911-5-0110 REVEALED SLIGHT BLISTERING AT THE SWEDGE AS WELL AS MISALIGNMENT OF PROTECTIVE HOSE WEBBING. REMOVED AND REPLACED LINE WITH A NEW UNIT IAW AMM. LEAK RATE DROPPED TO LESS THAN 1 PERCENT OVER 24 HOURS. THIS LINE HAS HAD A HISTORY OF RUPTURING WITH 2 OCCURRENCES WITH THIS OPERATOR AND AT LEAST 8 OTHER OCCURRENCES ON OTHER MFG PRODUCTS.