... ‘ Emission Standards and Test Procedures for Aircraft; ’’ Final Rule, 38 FR 19088, July 17, 1973 12 U.S EPA, ‘ Control of Air Pollution from Aircraft and Aircraft Engines; Emission Standards and ... Engines; Emission Standards and Test Procedures; ’’ Final Rule, 47 FR 58462, December 30, 1982 71 U.S.EPA, ‘ Control of Air Pollution from Aircraft and Aircraft Engines; Emission Standards and Test Procedures, ’’ ... the re-certification or retrofit of existing in-use engines 14 U.S EPA, ‘ Control of Air Pollution from Aircraft and Aircraft Engines; Emission Standards and Test Procedures; ’’ Final Rule, 70...