Valsts valodas centra izstrādātie transporta, infrastruktūras un sakaru termini

Konteksts: [..] The airspace above the inner approach surface, inner transitional surfaces, and balked landing surface and that portion of the strip bounded by these surfaces, which is not penetrated by any fixed obstacle other than a low-mass and frangibly mounted one required for air navigation purposes [..]
Avots: Annex 4 to the Convention on International Civil Aviation - Aeronautical Charts