AI.V.E.K1FAA-S-ACS-25 · Nov 2023Knowledge

Procedures for various types of taxiing and sailing.

ACS element text (the applicant demonstrates understanding of)

Procedures for various types of taxiing and sailing.

Bottom line

Approval must be obtained prior to moving an aircraft or vehicle onto the movement area during the hours an Airport Traffic Control Tower is in operation.

Key numbers

Key numbers for Procedures for various types of taxiing and sailing.
NumberWhat it means
Not more than 10 minutes before proposed taxi time, for participating pilots in pre-taxi clearance programsPre-taxi call
A 5 knot current can offset a 25 knot wind, for a seaplane of average size at idle powerCurrent vs wind

FAA references

  1. AIM 4-3-18 (Taxiing) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  2. SEA ch. 4 (p. 4-9) — FAA-H-8083-23
  3. AIM 5-2-1 (Pre‐taxi Clearance Procedures) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
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