You are quite right, but the Skill Test for a rating holder is the same as the Proficiency Check and uses the LPC Form. See Standards Doc 14 para 5.2.1 Proficiency Check Application and Report Form (LPC SPA). Confirmed in the latest version of the CAA Examiners Handbook page 17 table 6B. Other Ref AIC 115/99 para 2.
JAR-FCL 1.245 (f)(2) If a single engine class rating has expired, the applicant shall complete the skill test in Appendices 1 and 3 to JAR-FCL 1.240. That is the test on LPCSPA. Group A was a single engine Class Rating albeit not just piston
The "full" Skill Test as you put it, including "navigation" Section 3, is only conducted for initial licence issue. Form LST is for initial rating issue for licence holders.
I must confess it needs a lot of reading between the lines to get the answer.
[This message has been edited by Noggin (edited 20 February 2001).]