JO 7110.65 — Air Traffic Control

JO 7110.65 5-2-4

RADIO FAILURE

This reproduces published FAA reference text for study. It does not replace the current official FAA publication or regulation.

When you observe a Code 7600 display, apply the procedures in paragraph 10-4-4 , Communications Failure.

NOTE-

An aircraft experiencing a loss of two-way radio communications capability can be expected to squawk Code 7600 .

Instead of displaying “7600” in the data block, ERAM will display “RDOF,” and STARS/MEARTS will display “RF.”

REFERENCE-

FAA Order JO 7110.65, Para 5-3-3 , Beacon/ADS-B Identification Methods.

Retrieved from ecfr.gov on July 20, 2026.