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Regulator pressure limits:
Static: 270-455 psi
Flowing: 270-340 psi
Any pressure below 50 psi requires an AFTO 781 write-up
Oxygen Preflight:
1. Supply Lever – OFF
2. Diluter Lever – 100% OXYGEN
3. Attempt to breathe. The ability to breath indicates a faulty regulator.
4. Supply Lever - ON
5. Emergency Toggle Lever – EMERGENCY
6. Ensure eyewash pin in IN. Breath 3 cycles, watch blinker for black when breathing in,
white when breathing out. Hold breath – blinker should show black, then open eyewash
purge valve. A white indication on the blinker indicates the eyewash pin is working
normally. Leave eyewash pin OUT.
7. Emergency Toggle Lever – NORMAL
8. Breath 3 cycles, watch blinker for black when breathing in, white when breathing out
Fly with the regulator in following configuration:
Emergency Toggle Lever – NORMAL
Diluter Lever -100% OXYGEN
Supply Lever – ON