---
kind: "section"
citation: "47 C.F.R. § 80.379"
title: "47"
number: "80.379"
heading: "Maritime frequencies assignable to aircraft stations."
url: "https://uscodex.org/cfr/47/80.379"
---

# §80.379. Maritime frequencies assignable to aircraft stations.


This section describes the maritime frequencies assignable to aircraft stations for simplex operations:

- (a) **Available frequencies—**
- (b) **The conditions of use of the carrier frequencies in paragraph (a) of this section, are—**
  - (1) For permissible geographic areas of operation see [§ 80.373(b)(1)](/cfr/47/80.373.md?p=b-1). For other limitations see [§ 80.373(b)(7)](/cfr/47/80.373.md?p=b-7);
  - (2) Aircraft and ship stations may use 3023.0 kHz and 5680.0 kHz for search and rescue scene-of-action coordination including communications between these stations and participating land stations. Stations using these frequencies must use J3E emission;
  - (3) Assignable for distress and safety communications between aircraft and maritime mobile stations;
  - (4) **Assignable for search and rescue between ships and aircraft.** Stations using these frequencies must use A3E emission;
  - (5) These frequencies may be used by aircraft stations when:
    - (i) The altitude of aircraft stations does not exceed 300 meters (1,000 feet), except for reconnaissance aircraft participating in icebreaking operations where an altitude of 450 meters (1,500 feet) is allowed;
    - (ii) The mean power of aircraft stations must not exceed five watts;
    - (iii) Communications are limited to operations in which the maritime mobile stations are primarily involved and where direct communications between the aircraft and the ship or coast station is required;
    - (iv) Stations may use 156.300 MHz for safety purposes only;
    - (v) Stations may use 156.800 MHz for distress, safety and calling only; and
    - (vi) Use of 156.375 MHz by aircraft is not permitted in the New Orleans VTS area specified in [§ 80.383](/cfr/47/80.383.md).
  - (6) The use of 157.100 MHz is limited to communications with stations of the Department of Interior at Lake Mead, Nevada; and
  - (7) Commercial fishing vessels and associated aircraft may use 157.425 MHz while engaged in commercial fishing activities except within 120 km (75 miles) of the United States/Canada border and Puget Sound and the Strait of Juan de Fuca and its approaches, the Great Lakes, and the St. Lawrence Seaway.

## Notes

### Amendments

[51 FR 31213, Sept. 2, 1986, as amended at 58 FR 44953, Aug. 25, 1993]

### Authority

Authority: 47 U.S.C. 151-155, 301-609; 3 U.S.T. 3450, 3 U.S.T. 4726, 12 U.S.T. 2377.

### Source

Source: 51 FR 31213, Sept. 2, 1986, unless otherwise noted.

### Amendments

[51 FR 31213, Sept. 2, 1986, as amended at 58 FR 44953, Aug. 25, 1993]