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IR.VII.A.R1FAA-S-ACS-8C · Nov 2023Risk management

Possible reasons for loss of communication.

ACS element text (the applicant demonstrates understanding of)

Possible reasons for loss of communication.

Bottom line

If only the transmitter is inoperative, listen for ATC instructions on any operational receiver, including the navigation receivers. If the generator cannot be reset, inform ATC of an impending electrical failure.

FAA references

  1. RMH ch. 3 (p. 3-6) — FAA-H-8083-2A
  2. IPH App. A (p. A-3) — FAA-H-8083-16B
  3. IPH ch. 2 (p. 2-47) — FAA-H-8083-16B
  4. IFH ch. 11 (p. 11-9) — FAA-H-8083-15B
  5. 14 CFR 91.185 (IFR operations: Two-way radio communications failure.) — eCFR current as of 2026-03-05
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