---
kind: "section"
citation: "18 C.F.R. § 385.401"
title: "18"
number: "385.401"
heading: "Applicability (Rule 401)."
url: "https://uscodex.org/cfr/18/385.401"
---

# §385.401. Applicability (Rule 401).

- (a) **General rule.** Except as provided in [paragraph (b)](#b) of this section, this subpart applies to discovery in proceedings set for hearing under [subpart E](/cfr/18/subpartE.md) of this part, and to such other proceedings as the Commission may order.
- (b) **Exceptions.** Unless otherwise ordered by the Commission, this subpart does not apply to:
  - (1) Requests for information under the Freedom of Information Act, [5 U.S.C. 552](/usc/5/552.md), governed by [Part 388](/cfr/18/part388.md) of this chapter; or,
  - (2) Requests by the Commission or its staff who are not participants in a proceeding set for hearing under subpart E of this part to obtain information, reports, or data from persons subject to the Commission's regulatory jurisdiction; or
  - (3) **Investigations conducted pursuant to Part 1b of this chapter.**

## Notes

### Source

Source: Order 466, 52 FR 6966, Mar. 6, 1987, unless otherwise noted.

### Authority

Authority: 5 U.S.C. 551-557; 15 U.S.C. 717-717w, 3301-3432; 16 U.S.C. 791a-825v, 2601-2645; 28 U.S.C. 2461; 31 U.S.C 3701, 9701; 42 U.S.C. 7101-7352, 16441, 16451-16463; 49 U.S.C. 60502; 49 App. U.S.C. 1-85 (1988); 28 U.S.C. 2461 note (1990); 28 U.S.C. 2461 note (2015).

### Source

Source: Order 225, 47 FR 19022, May 3, 1982, unless otherwise noted.