Lets stay on track!
The C+ PA check in our company is performed on the ground, not in the Air.
If the DDR shows a PASS most people accept this and write it up in the Tech log Period !!
However is the DDR shows a FAIL then why do most people / companies choose to do it again and again or plot it on the graph in the RFM???
Should we not be using to DDR to record a Pass or FAIL if the DDR is serviceable in the first place!