The RR Trent engine has the following pneumatic connections to the EEC:
Pressure transducers in the EEC supply channels A and B
with signals in proportion to the pressure.
P0 - Ambient pressure.
P20 - Fan inlet pressure.
P160 - Fan exit pressure.
P25 - IPC exit pressure.
P30 - HPC exit pressure.
P50 - LPT exhaust pressure.