"TAI" on 757
Have spent eons recently in passenger mode on B737's and often seem to end up just forward of the starboard wing - so am familiar with the little stickers that say "13 feet" away from engine during ground runs, and "Starter Overide Access Hole", and "Don't open cowlings until leading edge slats retracted and disarmed" - etc. etc.
Today, however, ended up staring at the cowls of a 757 and saw "TAI Pressure Indication" and "TAI Pressure Vent".
TAI ?