Monitoring Agency for Asia Region (MAAR) was established by Aeronautical Radio of Thailand, Ltd. (AEROTHAI) under the approval of the Asia/Pacific Air Navigation Planning and Implementation Regional Group (APANPIRG) to assume the duties and responsibilities of the Regional Monitoring Agency (RMA) for the Asia Region.

The principal role of the MAAR is to assist the International Civil Aviation Organization (ICAO) in the continuation of the safety assessment program for the implementation of Reduced Vertical Separation Minimum (RVSM) and other monitoring requirements as determined by the APANPIRG.

  • The new RVSM Minimum Monitoring Requirements (MMR) table is available here. (May 2017)
  • AEROTHAI hosted an RVSM Seminar at the Bangkok ICAO Regional Office during 6-7 July 2017. Presentation materials are available here (last document category).
  • The FAA & Eurocontrol will host another Altimetry System Error (ASE) Workshop during 17-19 October 2017 at the Federal Aviation Administration (FAA) William J. Hughes Technical Center located in Atlantic City, NJ. More information is available here.
  • Implementation of the “RMA bulletin” and its impact on RVSM operations in the European airspace. Click here for more information.
  • Starting November 2016, States can submit LHD reports via our Online LHD Reporting System. Please contact us to obtain an access to the system. For States who wish to submit the form via email, please use the Word document form here (last updated March 2016)
  • Learn more about Large Height Deviation (LHD)
  • Operators who wish to apply for EGMU height monitoring service can now check for the EGMU service's available slots here.
  • The risk estimates are now updated for the new assessment period from January 2015 to December 2015