Published date: 31 August 2026

This AC describes an acceptable means of compliance with the requirements for Runway End Safety Areas (RESA) and/or Engineered Material Arresting Systems (EMAS). It provides guidance on how to assess the practicability of a RESA or EMAS, and on expected content for an aeronautical study considering a RESA or EMAS.

Related rules

This AC relates to Civil Aviation Rule Parts 139.20, 139.51, 139.131, Appendix A.1 to Part 139, and the corresponding Civil Aviation Transport Instrument (CATI 139.51) [PDF 179 KB]