What was found
CREW REPORTED THAT THE CO-PILOTS O2 MASK DONNING BUTTON WOULD NOT WORK. FOUND CREW O2 MASK TO BE DEFECTIVE PN 174262-12, SN 01384. AN OVERHAULED CREW MASK WAS INSTALLED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CREW REPORTED THAT THE CO-PILOTS O2 MASK DONNING BUTTON WOULD NOT WORK. FOUND CREW O2 MASK TO BE DEFECTIVE PN 174262-12, SN 01384. AN OVERHAULED CREW MASK WAS INSTALLED.