ad to change the oxygen Control box in the cockpit which houses the O2 test unit„ when testing the unit, it failed due to an oxygen leak, they use a Pitot Static test box, and pump of the BOX to simulate the Cabin Altitude reaching 10,000 for the O2 masks to drop in passenger compartment,,,,this part cost $36

ad to change the oxygen Control box in the cockpit which houses=the O2 test unit„ when testing the unit, it failed due to an oxygen leak, t=ey use a Pitot Static test box, and pump of the BOX to simulate the Cabin A=titude reaching 10,000 for the O2 masks to drop in passenger compartment,,, this part cost $36