IR.IV.A.K2FAA-S-ACS-8C · Nov 2023Knowledge

Interpretation, operation, and limitations of pitch, bank, and power instruments.

ACS element text (the applicant demonstrates understanding of)

Interpretation, operation, and limitations of pitch, bank, and power instruments.

Bottom line

The attitude indicator is reliable and the most realistic flight instrument on the panel, with indications that are very close approximations of the actual aircraft attitude. The pitch and bank limits of an attitude indicator depend on the make and model of the instrument.

Key numbers

Key numbers for Interpretation, operation, and limitations of pitch, bank, and power instruments.
NumberWhat it means
100° to 110° (some attitude indicators)AI bank limits
60° to 70° (some attitude indicators)AI pitch limits
approximately 55° pitch and 55° bank (some heading indicators in light aircraft)HI limits
approximately every 15 minutesHI check

FAA references

  1. PHAK ch. 8 (p. 8-19) — FAA-H-8083-25C (2023)
  2. PHAK ch. 8 (p. 8-22) — FAA-H-8083-25C (2023)
  3. PHAK Glossary (p. G-16) — FAA-H-8083-25C (2023)
  4. IPH App. A (p. A-3) — FAA-H-8083-16B
  5. AFH Glossary (p. G-2) — FAA-H-8083-3C
  6. IFH ch. 7 (pp. 7-23–7-24) — FAA-H-8083-15B
  7. AFH ch. 9 (p. 9-13) — FAA-H-8083-3C
  8. IFH ch. 7 (p. 7-11) — FAA-H-8083-15B
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