NO ENGINE BLEED TO and Landing

Question 1

Why do this?

Answer 1

Making no engine bleed TO or landing, with APU operating. Most likely due performance.

Question 2

Anti Ice required for TO?

Answer 2

configure for NO ending bleed TO just prior to TO.

Question 3

Anti Ice not required?

Answer 3

Configure just after engine start

Question 4

Hot WX ops?

Answer 4

Will only need to change Packs from HIGH to AUTO, and isolation valve from OPEN to AUTO to cover NO engine bleed proc.

Question 5

Wing anti Ice during NO ENG BLEED TO?

Answer 5

remain off until engine bleed air switches are ON and Isolation valve is AUTO.

Question 6

Explain Proc for TO?

Answer 6

Right Pack Auto
Isolation valve close
Left Pack auto
Eng 1 Bleed off
Apu bleed ON
Eng 2 Bleed OFF
Trim air switch ON
WAI switch OFF

Question 7

Explain Proc for After TO

Answer 7

Eng 2 Bleed ON,
APU BLEED OFF
Cabin ROC stabilizes
Eng 1 Bleed ON
Isolation valve Auto

Question 8

Explain Proc for Landing

Answer 8

Below 10000ft:
WAI OFF
right Pack auto
Isolation valve close
Left pack auto
Engine 1 bleed off
apu bleed ON
Engine 2 bleed OFF