---
kind: "section"
citation: "14 C.F.R. § 101.37"
title: "14"
number: "101.37"
heading: "Notice requirements."
url: "https://uscodex.org/cfr/14/101.37"
---

# §101.37. Notice requirements.

- (a) **Prelaunch notice—** Except as provided in [paragraph (b)](#b) of this section, no person may operate an unmanned free balloon unless, within 6 to 24 hours before beginning the operation, he gives the following information to the FAA ATC facility that is nearest to the place of intended operation:
  - (1) **The balloon identification.**
  - (2) The estimated date and time of launching, amended as necessary to remain within plus or minus 30 minutes.
  - (3) **The location of the launching site.**
  - (4) **The cruising altitude.**
  - (5) The forecast trajectory and estimated time to cruising altitude or 60,000 feet standard pressure altitude, whichever is lower.
  - (6) The length and diameter of the balloon, length of the suspension device, weight of the payload, and length of the trailing antenna.
  - (7) **The duration of flight.**
  - (8) **The forecast time and location of impact with the surface of the earth.**
- (b) For solar or cosmic disturbance investigations involving a critical time element, the information in [paragraph (a)](#a) of this section shall be given within 30 minutes to 24 hours before beginning the operation.
- (c) **Cancellation notice—** If the operation is canceled, the person who intended to conduct the operation shall immediately notify the nearest FAA ATC facility.
- (d) **Launch notice—** Each person operating an unmanned free balloon shall notify the nearest FAA or military ATC facility of the launch time immediately after the balloon is launched.

## Notes

### Source

Source: Docket 1457, 29 FR 47, Jan. 3, 1964, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40101 note, 40103, 40113-40114, 45302, 44502, 44514, 44701-44702, 44721, 46308.