If the description from the Maint Manual is this confusing for the pilots to understand, for the mechanics who don't deal with this type of information as part of their normal routine it must be downright jibberish.
Hp (or Po) is Pressure Altitude
Pa is Power Assurance
To (or OAT) is Outside Air Temp measured from a probe under the nose.
T1 is Compressor inlet temperature measured from a probe in the inlet plenum chamber
T5 is Sikorsky Interstage Turbine Temperature
T4.5 is TurboMeca Interstage Turbine Temperature
IIDS is Integrated Instrument Display System
RDAU is Raw/Remote Data Aquisition Unit
Did I miss any?
