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AI.VIII.C.K2FAA-S-ACS-25 · Nov 2023Knowledge

Flight control and trim use.

ACS element text (the applicant demonstrates understanding of)

Flight control and trim use.

Bottom line

Trim systems relieve the pilot of the need to maintain constant pressure on the flight controls. Trim systems are used to relieve the pilot of the need to maintain constant pressure on the flight controls. If the pilot needs to exert constant back pressure on a control column, the need for nose-up trim is indicated.

FAA references

  1. PHAK ch. 6 (p. 6-10) — FAA-H-8083-25C (2023)
  2. PHAK ch. 5 (p. 5-43) — FAA-H-8083-25C (2023)
  3. AFH ch. 18 (p. 18-18) — FAA-H-8083-3C
  4. AFH ch. 9 (pp. 9-11–9-12) — FAA-H-8083-3C
  5. AIH ch. 9 (p. 9-10) — FAA-H-8083-9B
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