---
kind: "section"
citation: "14 C.F.R. § 450.157"
title: "14"
number: "450.157"
heading: "Communications."
url: "https://uscodex.org/cfr/14/450.157"
---

# §450.157. Communications.

- (a) An operator must implement communication procedures during the countdown and flight of a launch or reentry vehicle that—
  - (1) Define the authority of personnel, by individual or position title, to issue “hold/resume,” “go/no go,” and abort commands;
  - (2) Assign communication networks so that personnel identified in [paragraph (a)(1)](#a-1) of this section have direct access to real-time, safety-critical information required to issue “hold/resume,” “go/no go,” and any abort commands; and
  - (3) **Implement a protocol for using defined radio telephone communications terminology.**
- (b) An operator must ensure the currency of the communication procedures, and that all personnel are working with the approved version of the communication procedures.
- (c) An operator must record all safety-critical communications network channels that are used for voice, video, or data transmissions that support safety-critical systems during each countdown.

## Notes

### Authority

Authority: 51 U.S.C. 50901-50923.

### Source

Source: Docket No. FAA-2019-0229, Amdt. 450-2, 85 FR 79719, Dec. 10, 202085 FR 79739, Dec. 10, 2020, unless otherwise noted.