CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER H—SCHOOLS AND OTHER CERTIFICATED AGENCIES (parts 140 to 147) > PART 147—AVIATION MAINTENANCE TECHNICIAN SCHOOLS > SUBPART B—Certification Requirements (§147.11 to §147.23) > 147.11—Ratings.