thrust lever angle question
TLA (thrust lever angle) indicates the position of the thrust lever in control stand from a reference point,usually this is 0degrees when thrust lever is at idle and increases up to 40 deg when thrust lever is advanced to take-off position.This thrust lever is connected by mechanical linkages to an electrical resolver synchro sensor called thrust lever angle resolver.The resolver has a stator and rotor,the angle of the rotor with respect to stator reference point changes as thrust lever is moved, this angle is called thrust lever resolver angle(TRA).This resolver is connected to electronic engine control(EEC) to control engine thrust for different positions of the thrust lever.Normally when thrust lever is at idle(TLA=0) then TRA may be 38deg. TRA may increase to 85deg when thrust lever is at take-off position.The exact values you can get in AMM. You have to rig the resolver to get correct angle when you install a new resolver,adjustment nuts will be provided on the linkages to do this.AMM gives the correct procedure.