AA.II.D.R5FAA-S-ACS-11A · Nov 2023Risk management

Other aircraft, vessels, and hazards.

ACS element text (the applicant demonstrates understanding of)

Other aircraft, vessels, and hazards.

Bottom line

Seaplane pilots must be vigilant for hazards such as electric power lines, power, sail and rowboats, rafts, mooring lines, water skiers, swimmers, etc. If on a collision course, the seaplane should slow, stop, or maneuver to the right, away from the bow of the oncoming vessel.

FAA references

  1. AFH ch. 2 (p. 2-16) — FAA-H-8083-3C
  2. AC 120-74, paras. 7b, 7c — AC No: 120-74B
  3. AIM 7-6-9 (Seaplane Safety) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  4. SEA ch. 1 (p. 1-2) — FAA-H-8083-23
  5. 14 CFR 91.129 (Operations in Class D airspace.) — eCFR current as of 2026-03-05
  6. AIM 4-3-24 (Use of Aircraft Lights) — AIM Basic 2/20/25 w/ Change 1 (8/7/25) & Change 2 (1/22/26)
  7. AFH ch. 9 (p. 9-10) — FAA-H-8083-3C
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