MD-83
Communication Breakdown
Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Other / Unknown
Aircraft
Replaced bottle and tested good. Oncoming flight crew used it for flight; [and] then the next oncoming flight crew noticed system inoperative. System failed. No suggestions; maintenance performed correctly. Graveyard [shift].
An Aircraft Maintenance Technician (AMT) was informed that a flight crew noticed the Crew Oxygen System had failed when the second flight crew came onboard. Technician had previously replaced crew O2 bottle.