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AI.XI.A.K1aFAA-S-ACS-25 · Nov 2023Knowledge

a. Instrument limitations and potential errors

ACS element text (the applicant demonstrates understanding of)

Flight instruments as they relate to: a. Instrument limitations and potential errors

Bottom line

As a general rule, any time visual cues or instrument indications differ from basic flight maneuver expectations, the pilot should assume an upset and cross-check to confirm the attitude, instrument error or instrument malfunction.

Key numbers

Key numbers for a. Instrument limitations and potential errors
NumberWhat it means
uncompensated Baro-VNAV NA below -11 °C (12 °F) airport temperatureBaro-VNAV low
uncompensated Baro-VNAV NA above 49 °C (120 °F) airport temperatureBaro-VNAV high

FAA references

  1. AFH ch. 9 (p. 9-13) — FAA-H-8083-3C
  2. AFH ch. 5, UPRT Training Core Concepts (p. 5-5) — FAA-H-8083-3C
  3. IPH ch. 4 (p. 4-33) — FAA-H-8083-16B
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