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AI.V.D.K7eFAA-S-ACS-25 · Nov 2023Knowledge

e. Low visibility taxi operations

ACS element text (the applicant demonstrates understanding of)

Procedures for: e. Low visibility taxi operations

Bottom line

Any time the pilot is uncertain of their location on the airport or during taxi, stop the aircraft and immediately advise ATC, and, if necessary, request progressive taxi instructions.

Key numbers

Key numbers for e. Low visibility taxi operations
NumberWhat it means
less than 1,200 feet RVRRVR threshold
1,200 ft RVR to 500 ft RVR; less than 500 ft RVRPlan levels

FAA references

  1. AIM 4-3-19 (Taxi During Low Visibility) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  2. AC 91-73, para. 7g — AC No: 91-73B
  3. AC 91-73, para. 7b — AC No: 91-73B
  4. PHAK ch. 14 (p. 14-32) — FAA-H-8083-25C (2023)
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