AI.II.B.K8FAA-S-ACS-25 · Nov 2023Knowledge

Division of attention inside and outside the aircraft.

ACS element text (the applicant demonstrates understanding of)

Division of attention inside and outside the aircraft.

Bottom line

Approximately 90 percent of the pilot’s attention should be devoted to outside visual references and scanning for airborne traffic. No more than about 10 percent of the pilot’s attention should be inside the flight deck. The pilot should develop the skill to quickly analyze the appropriate flight instruments and then immediately return to the visual outside references to control the airplane’s attitude.

Key numbers

Key numbers for Division of attention inside and outside the aircraft.
NumberWhat it means
Approximately 90 percent of the pilot's attention should be devoted to outside visual references and scanning for airborne traffic.Attention outside
No more than about 10 percent of the pilot's attention should be inside the flight deck.Attention inside
Each eye movement should not exceed 10 degrees.Scan movement
Each area should be observed for at least 1 second to enable detection.Dwell time

FAA references

  1. AFH ch. 3 (pp. 3-5–3-6) — FAA-H-8083-3C
  2. AFH ch. 1 (p. 1-11) — FAA-H-8083-3C
  3. AC 90-48 ch. 4 — AC No: 90-48E
  4. PHAK ch. 2 (p. 2-24) — FAA-H-8083-25C (2023)
  5. AIH ch. 9 (p. 9-10) — FAA-H-8083-9B
  6. AIH ch. 9 (p. 9-11) — FAA-H-8083-9B
  7. PHAK ch. 14 (p. 14-28) — FAA-H-8083-25C (2023)
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