Airports
Revised AC on PAPIs is Mandatory for Some
Circular replaces its 2011 predecessor and applies to both two- and four-light PAPI installations.

The FAA has published the draft of a newly revised Advisory Circular containing the agency’s updated standards applicable to an airport’s responsibility for installation, operation, and maintenance of precision approach path indicator (PAPI) systems. Effective six months after publication, AC 150/5345-28H is mandatory for all airport projects funded with federal grant monies through the Airport Improvement Program (AIP), the FAA emphasized.