As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPATIN`S OXYGEN MASK NOT TESTING PROPERLY, PRESS TO TEST ALLOWS CONTINUOUS FLOW WHEN HELD, WHICH SHOULDN'T HAPPEN. NOTED THE CAPTAIN'S OXYGEN MASK RED INFLATION BUTTON STICKING. REMOVED & REPLACED THE OXYGEN MASK IAW AMM 35-11-12. OPS TEST OF CREW OXYGEN SYSTEM & OXYGEN MASK MICROPHONES, CHECKED OK IAW AMM 35-10-00, & AMM 23-51-00.