Page 96 - Aeronautical Engineer Data Book
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Aeronautical definitions 75
4.5 Airspace terms
The following abbreviations are in use to
describe various categories of airspace.
Table 4.5 Airspace acronyms
AAL Above airfield level
AGL Above ground level
AIAA Area of intense air activity
AMSL Above mean sea level
CTA Control area
CTZ Control zone
FIR Flight information region
FL Flight level
LFA Local flying area
MATZ Military airfield traffic zone (UK)
MEDA Military engineering division airfield (UK)
Min DH Minimum descent height
SRA Special rules airspace (area)
SRZ Special rules zone
TMA Terminal control area
