A notice from Jeppesen (PDF) reported that the company anticipated adding LP data in “mid-2012,” but the data still aren’t available, and Jeppesen hasn’t updated its plans to include LP procedures. Don’t confuse LP approaches with LPV procedures LPV approaches offer vertical guidance like an ILS.Īccording to the FAA’s summary of IAPs, there were 344 published LP procedures at the end of July 2012.īut as of September 2012, you still can’t fly these procedures, because the data needed to fly them haven’t been added to the Jeppesen NavData updates that most IFR-approved GPS units use. In other words, LP procedures are non-precision approaches (they don’t offer vertical guidance) that use WAAS signals and data to emulate a localizer-only procedure. Receivers capable of flying LP procedures must contain a statement in the Flight Manual Supplement or Approved Supplemental Flight Manual stating that the receiver has LP capability, as well as the capability for the other WAAS and GPS approach procedure types. NOTE–WAAS receivers certified prior to TSO C-145b and TSO C-146b, even if they have LPV capability, do not contain LP capability unless the receiver has been upgraded.

LP procedures may provide lower minima than a LNAV procedure due to the narrower obstacle clearance surface. This new approach takes advantage of the angular lateral guidance and smaller position errors provided by WAAS to provide a lateral only procedure similar to an ILS Localizer. These localizer performance (LP) procedures are described, among other places, in AIM 1-1-20 (b)(3):Ī new nonprecision WAAS approach, called Localizer Performance (LP) is being added in locations where the terrain or obstructions do not allow publication of vertically guided LPV procedures. Instrument rated pilots have started noticing a new type of RNAV (GPS) procedure appearing in their chart updates.

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