U.S. Code of Federal Regulations

Regulations most recently checked for updates: Dec 13, 2025

All TitlesTitle 40Chapter IPart 87 - PART 87—CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES
View all text of Part 87 [§ 87.1 - § 87.60]
§ 87.48 - Derivative engines for emissions certification purposes.

Provisions related to derivative engines for emissions certification purposes apply as described in 40 CFR 1031.130.

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