Republic Airways Systems- Pneumatics
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Engine and APU bleed air are the only air sources for the pneumatic system on the ground, True
or False? - CORRECT ANSWER - False, an external ground power unit can also provide air
sources for the pneumatic system.
The engine bleeds, air conditioning ducts, APU bleed air distribution, and anti-ice supply have
two overheat and leak detection loops. With both loops operational, both loops must detect a leak
before an EICAS message is displayed, True or false? - CORRECT ANSWER - True
What does the Overheat Detection System (ODS) observe? - CORRECT ANSWER - • Engine
bleeds, packs (air conditioning ducts)
• APU bleed
• Plumbing for the wing and engine anti-icing system
• Trim air (rear cabin temperature control on certain Delta aircraft)
How many bleed valves does each engine have? - CORRECT ANSWER - 2-
One from Low Pressure sixth stage compressor and One from High Pressure 10th stage
compressor
What is the APU bleed air used for? - CORRECT ANSWER - ECS on the ground, Engine
starting on the ground, Assist with engine start less than FL210 and Bleed source for
pressurization, heating and cooling less than 15,000 feet MSL
Where is the external ground air source panel located? - CORRECT ANSWER - Lower
fairing between the wings
Where is bleed air tapped from the engines? - CORRECT ANSWER - 6th and 10 stage
compressors
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Engine and APU bleed air are the only air sources for the pneumatic system on the ground, True
or False? - CORRECT ANSWER - False, an external ground power unit can also provide air
sources for the pneumatic system.
The engine bleeds, air conditioning ducts, APU bleed air distribution, and anti-ice supply have
two overheat and leak detection loops. With both loops operational, both loops must detect a leak
before an EICAS message is displayed, True or false? - CORRECT ANSWER - True
What does the Overheat Detection System (ODS) observe? - CORRECT ANSWER - • Engine
bleeds, packs (air conditioning ducts)
• APU bleed
• Plumbing for the wing and engine anti-icing system
• Trim air (rear cabin temperature control on certain Delta aircraft)
How many bleed valves does each engine have? - CORRECT ANSWER - 2-
One from Low Pressure sixth stage compressor and One from High Pressure 10th stage
compressor
What is the APU bleed air used for? - CORRECT ANSWER - ECS on the ground, Engine
starting on the ground, Assist with engine start less than FL210 and Bleed source for
pressurization, heating and cooling less than 15,000 feet MSL
Where is the external ground air source panel located? - CORRECT ANSWER - Lower
fairing between the wings
Where is bleed air tapped from the engines? - CORRECT ANSWER - 6th and 10 stage
compressors
