---
kind: "section"
citation: "14 C.F.R. § 91.191"
title: "14"
number: "91.191"
heading: "Category II and Category III manual."
url: "https://uscodex.org/cfr/14/91.191"
---

# §91.191. Category II and Category III manual.

- (a) Except as provided in [paragraph (c)](#c) of this section, after August 4, 1997, no person may operate a U.S.-registered civil aircraft in a Category II or a Category III operation unless—
  - (1) There is available in the aircraft a current and approved Category II or Category III manual, as appropriate, for that aircraft;
  - (2) The operation is conducted in accordance with the procedures, instructions, and limitations in the appropriate manual; and
  - (3) The instruments and equipment listed in the manual that are required for a particular Category II or Category III operation have been inspected and maintained in accordance with the maintenance program contained in the manual.
- (b) Each operator must keep a current copy of each approved manual at its principal base of operations and must make each manual available for inspection upon request by the Administrator.
- (c) This section does not apply to operations conducted by a certificate holder operating under [part 121](/cfr/14/part121.md) or [part 135](/cfr/14/part135.md) of this chapter or a holder of management specifications issued in accordance with [subpart K](/cfr/14/subpartK.md) of this part.

## Notes

### Amendments

[Docket 26933, 61 FR 34560, July 2, 1996, as amended by Amdt. 91-280, 68 FR 54560, Sept. 17, 2003]

### Source

Source: Docket 18334, 54 FR 34294, Aug. 18, 1989, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 106(f), 40101, 40103, 40105, 40113, 40120, 44101, 44111, 44701, 44704, 44709, 44711, 44712, 44715,44716, 44717, 44722, 44740, 46306, 46315, 46316, 46504, 46506-46507, 47122, 47508,47528-47531, 47534; Pub. L. 112-95, 126 Stat. 11; Pub. L. 114-190, 130 Stat. 615 (49 U.S.C. 44703 note); sec. 828, Pub. L. 118-63, 138 Stat. 1330 (49 U.S.C. 44703 note); articles 12 and 29 of the Convention on International Civil Aviation, 61 Stat. 1180.

### Amendments

[Docket 26933, 61 FR 34560, July 2, 1996, as amended by Amdt. 91-280, 68 FR 54560, Sept. 17, 2003]