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AI.II.I.K5bFAA-S-ACS-25 · Nov 2023Knowledge

b. Estimated time of arrival, including conversion to universal coordinated time (UTC)

ACS element text (the applicant demonstrates understanding of)

Calculating: b. Estimated time of arrival, including conversion to universal coordinated time (UTC)

Bottom line

The applicant demonstrates instructional knowledge by describing and explaining: Calculating: Estimated time of arrival, including conversion to universal coordinated time (UTC).

Key numbers

Key numbers for b. Estimated time of arrival, including conversion to universal coordinated time (UTC)
NumberWhat it means
add 5 hours (Eastern Standard Time)Eastern to UTC
add 6 hours (Central Standard Time)Central to UTC
add 7 hours (Mountain Standard Time)Mountain to UTC
add 8 hours (Pacific Standard Time)Pacific to UTC
subtract 1 hour (from the standard-time conversion)Daylight time

FAA references

  1. AIM 4-2-12 (Time) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  2. PHAK ch. 13 (p. 13-6) — FAA-H-8083-25C (2023)
  3. PHAK ch. 1 (p. 1-14) — FAA-H-8083-25C (2023)
  4. AIH ch. 1 (pp. 1-21–1-22) — FAA-H-8083-9B
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