PNEUMATICS

Question 1

PNEUMATICS

1. The amber AIR DUCT O’HEAT annunciator
   indicates excessive temperature in the _____
   ___ _____ to the _____.

Answer 1

PNEUMATICS

1. The amber AIR DUCT O’HEAT annunciator
   indicates excessive temperature in the bleed
   air duct to the cabin.

Question 2

PNEUMATICS

2. The AIR SOURCE selector determines the
   source of air to the ______/_____.

Answer 2

PNEUMATICS

2. The AIR SOURCE selector determines the
   source of air to the cockpit/cabin.

Question 3

PNEUMATICS

3. The FRESH AIR position on the AIR
   SOURCE selector will _____ all _____ ___
   sources to the cabin and power the fresh air
   fan. If in flight, the cabin will _________.
   When the cabin is depressurized, fresh air
   will enter the cabin from the ______ _____
   through the fresh air fan.

Answer 3

PNEUMATICS

3. The FRESH AIR position on the AIR
   SOURCE selector will close all bleed air
   sources to the cabin and power the fresh air
   fan. If in flight, the cabin will depressurize.
   When the cabin is depressurized, fresh air
   will enter the cabin from the pylon inlets
   through the fresh air fan.

Question 4

PNEUMATICS

4. Selecting BOTH on the AIR SOURCE
   selector opens both ______ to provide
   bleed air from ____ ______ to the cockpit
   and cabin. This is the ______ position for all
   ground and flight operations.

Answer 4

PNEUMATICS

4. Selecting BOTH on the AIR SOURCE
   selector opens both PRSOVs to provide
   bleed air from both engines to the cockpit
   and cabin. This is the normal position for all
   ground and flight operations.