GE ADTS 542 Instruction Manual page 105

M V A
ANUAL ENTING OF THE IRCRAFT
Number of
Channels Application
4 Pitot & Static
Pilot & Copilot
103
P S S
ITOT AND TATIC YSTEMS
Figure 3-29: Manual let-down ADTS554F
1st Valve
open
Pt2 to Ps2 (B)
2nd Valve 3rd Valve
open
Pt1 to Ps1 (C) Ps2 to Ps1 (A)
4th Valve
open open
Ps1 to Atm
(D)