What should pilots do when the ALS is INOP?

When the Approach Lighting System (ALS) is inoperative, pilots should refer to the Terminal Procedures Publication (TPP) to determine the appropriate procedures for the approach they are conducting. The TPP provides essential information regarding alternate minima, approach notes, and specific guidance that may be necessary when certain airport equipment, such as the ALS, is not functioning. It can specify alternate visual references or other cues that may be relied upon for descent and landing in the absence of standard lighting aids.

Understanding how to navigate the TPP helps ensure that pilots maintain safety and situational awareness while accommodating for the lack of certain navigational aids. This is critical in IFR operations, where adherence to published procedures is paramount for safe and effective flight operations.