Speed below ??400/M0.85??
Trim to the 'Ideal' sector on the Feel Trim gauge
Unlock the elevators ('Click click, white band, 'ELEV' caption on')
Power cock off
Raise the standby trim switch guards
Exhaust the elevator accumulator (11/2 to 21/2 TPI with the gear up, ??51/2 to 6?? with it down)
Check control column response
Check standby trim response and 'TRIM' caption
Changeover (Mod 399 switches) as required
Forgive me if I've got it wrong - I last did that in 1975!
Then there was 'CUBSTUNT' for AC/DC (alternator) failure:
Cabin altimeter cock to 'static'
UHF standby Trx on
Boost pump OFF
Speed below 300/M0.7
Trim to the 'Ideal' sector
Unlock the elevators ('Click click, white band, 'ELEV' caption on')
Non-essential electrics off
Transponder to Emergency