Chapter 77 ENGINE INDICATING - VA771005 NC Indicator Engine Pressure Ratio EPR, E.O.: co! EXHAUST Engine Strut controls:'Instl..E.O.: 002. . )Flt Deck 'Indicator Instl T/RSys. E.0.L.003, 004 Thrust Reverser System Wiring. Diagram 002'(Rev. G) :Support Bracket AsSy:=:T/R'COntrOl Valve R/S 100 (ReV.