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AA.II.D.K2FAA-S-ACS-11A · Nov 2023Knowledge

Taxi instructions/clearances, if applicable.

ACS element text (the applicant demonstrates understanding of)

Taxi instructions/clearances, if applicable.

Bottom line

Pilots are required to read back all clearances. When a pilot is uncertain of an ATC clearance, that pilot shall immediately request clarification from ATC.

Key numbers

Key numbers for Taxi instructions/clearances, if applicable.
NumberWhat it means
48 hoursEmergency report

FAA references

  1. AC 120-74, para. 7f — AC No: 120-74B
  2. 14 CFR 91.123 (Compliance with ATC clearances and instructions.) — eCFR current as of 2026-03-05
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