I'm not sure the RFM says 100%ng. What the RFM normal procedures does suggest by sequence is that you would have already checked that the FCL was in the 'flight' position before you complete the hydraulic accumulator test. I'm not trying to be clever by any stretch, but being in the 'flight' position doesn't correlate to 100%ng.
I've always accelerated to flight after start and completed those checks at that time, on the assumption that the 'flight' position offers the best conditions for the check. In addition, I can then be sure that I am not hanging around in mid NR particularly 300-320 or worrying about what the wind is or isn't doing. There is something to be said for a thinking pilot vs a flying pilot but generally I think the French thought things through when they were writing the RFM and the DGAC was certifying it.
Check : fuel flow control in 'flight" position.
NOTE : During engine acceleration, do not allow NR value to remain steady between 300 and 320 r.p.m.
- Disconnect external power, if used
. Check : Warning-Caution-Advisory Panel GEN and BAT (4) lights off
- Switch on PITOT heating * .............. On pedestal panel (17)
Switch on the HORN
Check that the PITOT and HORN lights go out ............ (4)
Check All warning and caution lights oft ........................(4)
Electrical system voltage and current ............................(1)
. Engine oil pressure
- Run each booster pump separately and check that :
The fuel pressure is correct ........................... (1)
The FUEL P. warning light is on .......................(4)
- Switch on/engage all necessary systems (VHF, lights, windshield wiper*, etc)
NOTE : Do not use the wiper on a dry windshield or in light rain.
- Carry out a hydraulic accumulator test :