PlayTheOdds
Veteran
OK lets see here I forget I'm not dealing with mechanics here just wannabe communists. You have two engines one on the left and one on the right. We will call them engines #1 being (L/H) and engine #2 being (R/H). Each engine has one IDG. The #1 engine IDG required servicing. The #2 engine IDG was INOP. Therefore MC wants to keep a close eye on the #1 engine IDG.