***Meaning*** :: <u>G</u>round Based Augmentation System ([[GBAS]]) <u>L</u>anding <u>S</u>ystem Uncommon line of minimum on an RNAV Instrument Approach Procedure [[IAP]]. > [!quote] From [[AIM 5]]-4-5(m)(a), going forward, > "GLS will now be used only for [[GBAS]] minima, which will be on a separate approach chart. Most RNAV(GPS) approach charts have had the GLS minima line replaced by a WAAS LPV line of minima." #acronym