PHASE 2 - NLG DN AND LOCKED, MLG ELONGATING
When the NLG RA is fully extended and locked, the position microswitch
illuminates the NOSE green triangular annunciator (NLG DN & LOCKED)
and extinguishes the corresponding amber light.
When both MLG RA are fully extended (DN) the position microswitches
energize, the VALVE 1 DOWN solenoid and pressure is delivered to the
MLG SA to elongate (extend) the MLG.