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AA.I.E.K7FAA-S-ACS-11A · Nov 2023Knowledge

Appropriate rudder use in transport aircraft to avoid rudder reversal.

ACS element text (the applicant demonstrates understanding of)

Appropriate rudder use in transport aircraft to avoid rudder reversal.

Bottom line

Any permanent deformation resulting from these ultimate load conditions must not prevent continued safe flight and landing.

Key numbers

Key numbers for Appropriate rudder use in transport aircraft to avoid rudder reversal.
NumberWhat it means
VMC to VC/MCDesign speed band
200 poundsAssumed pilot force

FAA references

  1. 14 CFR 25.353 (Rudder control reversal conditions.) — eCFR current as of 2026-10-08
  2. AC 61-138, para. 14.3.8.2 — AC No: 61-138A
  3. AC 61-138, para. 14.1.2.2 — AC No: 61-138A
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