Monitoring aircraft height-keeping performance consists of collection of necessary data using specialized systems, estimation of relevant performance parameters and comparison of these parameter estimates to corresponding RVSM requirements, on both an individual-aircraft and a system-wide basis.
The objectives of monitoring are two:
To ensure that the height-keeping performance in RVSM airspace as a whole complies with system requirements
supporting continued safe use of the RVSM
As noted, the collection of necessary data is the first step in monitoring aircraft height-keeping
performance. Aircraft geometric height is one of these data sources. There are two systems used to collect
this type of information:
Aircraft Geometric Height Measurement Element (AGHME)
The FAA Technical Center has developed the ground-based Aircraft Geometric Height Measurement Element (AGHME)
system as the principal means of satisfying the first objective (at top of page) of monitoring in connection
with the North American RVSM. These systems are positioned at fixed locations in the United States and
Canada, automatically producing estimates of the geometric height of suitably equipped aircraft flying
within the coverage area of an AGHME constellation.
Page Last Modified: 01/21/11 14:52 EST
This page can be viewed online at: http://www.faa.gov/air_traffic/separation_standards/naarmo/monitoring_methods/