---
kind: "section"
citation: "14 C.F.R. § 121.921"
title: "14"
number: "121.921"
heading: "Training devices and simulators."
url: "https://uscodex.org/cfr/14/121.921"
---

# §121.921. Training devices and simulators.

- (a) Each flight training device or airplane simulator that will be used in an AQP for one of the following purposes must be evaluated by the FAA for assignment of a flight training device or flight simulator qualification level:
  - (1) **Required evaluation of individual or crew proficiency.**
  - (2) Training to proficiency or training activities that determine if an individual or crew is ready for an evaluation of proficiency.
  - (3) **Activities used to meet recency of experience requirements.**
  - (4) **Line Operational Simulations (LOS).**
- (b) **Approval of other training equipment.**
  - (1) Any training equipment that is intended to be used in an AQP for purposes other than those set forth in [paragraph (a)](#a) of this section must be approved by the FAA for its intended use.
  - (2) An applicant for approval of training equipment under this paragraph must identify the device by its nomenclature and describe its intended use.
  - (3) Each training device approved for use in an AQP must be part of a continuing program to provide for its serviceability and fitness to perform its intended function as approved by the FAA.

## Notes

### Source

Source: Docket FAA-2005-20750, 70 FR 54815, Sept. 16, 2005, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 106(f), 40103, 40113, 40119, 41706, 42301 preceding note added by Pub. L. 112-95, sec. 412, 126 Stat. 89, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 44729, 44732; 46105; Pub. L. 111-216, 124 Stat. 2348 (49 U.S.C. 44701 note); Pub. L. 112-95, 126 Stat. 62 (49 U.S.C. 44732 note); Pub. L. 115-254, 132 Stat. 3186 (49 U.S.C. 44701 note).