AA.VI.C.K4FAA-S-ACS-11A · Nov 2023Knowledge

Two-way radio communication failure procedures during an arrival.

ACS element text (the applicant demonstrates understanding of)

Two-way radio communication failure procedures during an arrival.

Bottom line

Unless otherwise authorized by ATC, each pilot who has two-way radio communications failure when operating under IFR shall comply with the rules of 14 CFR 91.185. If the failure occurs in VFR conditions, or if VFR conditions are encountered after the failure, continue the flight under VFR and land as soon as practicable. If the failure occurs in IFR conditions, or if the VFR option cannot be complied with, continue the flight by the route assigned in the last ATC clearance received.

Key numbers

Key numbers for Two-way radio communication failure procedures during an arrival.
NumberWhat it means
7600Squawk code
RDOF flashRadar alert

FAA references

  1. 14 CFR 91.185 (IFR operations: Two-way radio communications failure.) — eCFR current as of 2026-03-05
  2. IPH ch. 2 (p. 2-47) — FAA-H-8083-16B
  3. 14 CFR 91.129 (Operations in Class D airspace.) — eCFR current as of 2026-03-05
  4. IFH ch. 11 (p. 11-8) — FAA-H-8083-15B
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