OXY

Question 1

Oxygen system off (both cockpits)

OXY OFF/OXY

Answer 1

1. OXYGEN - ON, CHECK FLOW, CONNECTIONS, MASK
2. EO2 - PULL
3. DESCEND BELOW 10,000FT CABIN ALTITUDE

EO2 - Reset
oxygen - off
MFD ECS page - check status
land when practical

Question 2

OBOGS computer BIT failure

OXY/OXY BIT

Answer 2

1. OXYGEN SYSTEM OFF (BOTH COCKPITS) checks

Question 3

OBOGS failure

OXY

Answer 3

1. OXYGEN - OFF
2. EO2 - PULL
3. DESCEND BELOW 10,000ft CABIN ALTITUDE

EO2 - reset
MFD ECS page - check status
land when practical

Question 4

OXYGEN PRESSURE OR CONCENTRATION LOW

OXY/LOW OXY

Answer 4

1. OXYGEN - ON (CHECK FLOW, CONCENTRATION, MASK)
2. PCL - INCREASE IF POSSIBLE
3. EO2 - PULL
4. DESCEND BELOW 10,000FT CABIN ALT

EO2 - RESET
OXYGEN - OFF
MFD ECS PAGE - CHECK STATUS
LAND WHEN PRACTICAL

Question 5

OXY FLOW WARNING

OXY FLOW

Answer 5

1. OXYGEN - ON (CHECK FLOW, CONNECTIONS, MASK)
2. INSTRUCTOR SWITCH - FRONT OR REAR SELECTED
3. EO2 AFFECTED COCKPIT - PULL
4. DESCEND BELOW 10,000ft CABIN ALTITUDE

EO2 - reset
OXY - OFF (BOTH CPs)
MFD ECS PAGE - status
land when prac

Question 6

CABIN ALTITUDE ABOVE 25,000FT

CAB ALTITUDE

Answer 6

DESCEND TO 25,000FT CABIN ALTITUDE OR BELOW

land when practical

Question 7

AIRCRAFT ALTITUDE ABOVE 26,000FT

ACFT ALT

Answer 7

DESCEND TO 25,000FT AIRCRAFT ALT OR BELOW

land when practical

Question 8

CABIN OVERPRESSURE WARNING

CAB HI PRESS/OVPR

Answer 8

1. CABIN PRESS - PRESS DUMP
2. PCL - MIN PRACTICAL

when cab press equalises
PCL - as req
land when prac