I can't distinguish the difference the proficiency check and competency check
I can't distinguish the difference the instrument proficiency check and the instrument competency check.
In the ASA's 2014 Instrument Rating TEST PREP,
4021. how long does a pilot meet the recency og experience requirements for IFR flight after successfully completing an instrument competency check if no further IFR flights are made?
A- 90days
B - 6 calendar months
C - 12 calendar months
Answers is B, but I think C is correct.
Because
I think " 6 calendar months after completing currency, we enter the grace period for 6 calendar months.
after the grace period, we should complete the instrument proficiency check.
So after 12 calendar months from time currency is completed, we e should complete the instrument proficiency check. "
help me!!!