"Barry" wrote in message ...


One item on the Instrument Rating Practical Test Standards that's often
overlooked is the turn coordinator calibration (Area IV, Task E4). People
who've never done this should try it sometime. You might be surprised at how
far off the instrument can be.

Very true. I have seen TC that were indicating standard rate when it
took a lot longer than 1 min to complete a 180 turn. In another case,
I've seen a TC that did not move beyond standard rate. I could be at
2x standard rate but still showing 1x standard rate on the TC.