Hi Bob

This example does not look right! More specifically, an altimeter reading of [b]244'[/b] at the DA looks wrong.

IREX eText page 290
[attachment=1054]PEC.PNG[/attachment]

[size=5][color=red]Reasoning[/color][/size]
Looking at the worked example on the Altimeter Correction chart below, the mathematical function relating Indicated Altitude to the Actual (Indicated) Altitude is:
[i]Indicated Altitude (4000') + Altimeter Correction (+2') = Actual (Indicated) altitude (4002')
[/i]
[attachment=1053]PEC Chart.PNG[/attachment]

Now, getting back to the worked DA exercise
When the altimeter reads 244' the Indicated Altitude is 244'. Applying a PEC of minus 6' gives an Actual (Indicated) Altitude of 238' - ie
[i]Indicated Altitude (244') + Altimeter Correction (-6') = Actual (Indicated) altitude (238')[/i]

So when the altimeter reads 244', the actual indicated altimeter reading will be 238' which is below the actual indicated DA of 250'

Do you have any thoughts in this reasoning?