Statutes, codes, and regulations
Code of Federal Regulations
Title 40 - PROTECTION OF ENVIRONMENTChapter I - ENVIRONMENTAL PROTECTION AGENCYSubchapter U - AIR POLLUTION CONTROLSPart 1031 - CONTROL OF AIR POLLUTION FROM AIRCRAFT ENGINES
Subpart B - EMISSION STANDARDS AND MEASUREMENT PROCEDURES
Section 1031.50 - Subsonic turbojet and turbofan engines at or below 26.7 kN thrust

40 C.F.R. § 1031.50

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Current through October 31, 2024
Section 1031.50 - Subsonic turbojet and turbofan engines at or below 26.7 kN thrust

The following standards apply to new turbofan or turbojet aircraft engines with rated output at or below 26.7 kN thrust that are installed in subsonic aircraft:

(a)Smoke. Engines of a type or model for which the date of manufacture of the individual engine is on or after August 9, 1985 may not have a characteristic level for smoke number exceeding the lesser of 50 or the following value:

SN = 83.6·rO-0.274

(b) [Reserved]

40 C.F.R. §1031.50

87 FR 72351 , 12/23/2022