AMC1 CAT.OP.MPA.150(b) Fuel policy: PLANNING CRITERIA — AEROPLANES
(a) Basic procedure
to include Contingency Fuel as either of
- trip fuel 5% or
- trip fuel 3% when ERA is used
- 20 mins of trip burn based on monitoring programme for the individual A/C
- statistical extra burn based on approved individual A/C and city-pair data
but never less than 5 minutes holding at 1500' ft above DEST in ISA conditions.
(b) Reduced contingency fuel (RCF) procedure
--> what the OP inqures about
(c) Predetermined point (PDP) procedure
(d) Isolated aerodrome procedure
AMC2 CAT.OP.MPA.150(b) Fuel policy: "LOCATION OF THE FUEL EN-ROUTE ALTERNATE (FUEL ERA) AERODROME"
--> not pertinent to this discussion
Thus:
* The 3% ERA is a version of the BASIC procedure, not RCF.
* The RCF procedure clearly spells DEST1 and DEST2 - to be treated indentically with respect to ALTN requirements.
* The PDP uses DEST and its ALTN, of which only one is reachable.
Wording is mine, not verbatim.