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AI.VII.J.K1FAA-S-ACS-25 · Nov 2023Knowledge

Purpose of and procedures for glassy water approach and landing.

ACS element text (the applicant demonstrates understanding of)

Purpose of and procedures for glassy water approach and landing.

Bottom line

Always perform glassy water landings with power.

Key numbers

Key numbers for Purpose of and procedures for glassy water approach and landing.
NumberWhat it means
Approximately 10 knots above stall speed during the glassy water descentAirspeed
Raise the nose to the touchdown attitude at approximately 200 feet above the surfacePitch attitude
Even experienced pilots can misjudge altitude by 50 feet or more over glassy smooth water or at night without sufficient lightAltitude error

FAA references

  1. SEA ch. 6 (p. 6-6) — FAA-H-8083-23
  2. AIM 6-3-3 (Ditching Procedures) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  3. RMH ch. 3 (p. 3-7) — FAA-H-8083-2A
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