AA.II.D.R1
Taxiing and Sailing (ASES, AMES)
What does AA.II.D.R1 mean?
Distractions, task prioritization, loss of situational awareness, or disorientation..
- Area of Operation
- II. Preflight Procedures
- Task
- D. Taxiing and Sailing (ASES, AMES)
- Element type
- A Risk Management element — a hazard you must be able to identify, assess, and mitigate. These show up on the knowledge test and again on your checkride.
What you need to know
For seaplane/amphibian taxiing and sailing, the core idea is that water taxiing is essentially flying the airplane at low speed using wind, water current, and power/control surfaces the way you'd use rudder and brakes on land — you have far less directional control and no brakes, so you must plan your approach to the dock, buoy, or ramp well ahead of time and account for wind and current pushing you. A critical, amphibian-specific item is verifying gear position (wheels up for water, down for land) before every takeoff and landing, since getting this backward is a classic cause of accidents. Porpoising and skipping happen when pitch attitude and power aren't matched to the step/hull attitude during acceleration or deceleration on the water, and the fix is prompt, correct control and power input rather than fighting the oscillation. As with any taxi operation, the exam also expects you to manage distractions and workload so you don't lose situational awareness, avoid confirmation/expectation bias when copying taxi/sailing instructions, use the airport/seaplane base diagram and correct chart, complete checklists fully even when interrupted, and stay alert for other traffic, vessels, and hazards, especially in low visibility.
Why students miss this
Students often treat this task as generic ground-handling knowledge and forget the amphibious-specific killer: landing gear position must be verified for the surface being used, and a wrong-configuration mistake here can be catastrophic in a way that dry-land taxiing errors are not. They also underestimate how confirmation bias plays out on the water or ramp, assuming they heard the correct clearance or right-of-way situation because that's what they expected, rather than cross-checking it against what was actually said or charted.
Focus on: Build a mental habit of treating gear-position checks and taxi/sailing clearance verification as non-negotiable, checklist-driven steps rather than assumptions based on routine or expectation.
Drill this area until it sticks
AA.II.D.R1 came from a question you missed on the FAA Airline Transport Pilot Multiengine Airplane knowledge test. Drill ACS-aligned practice questions with AI explanations and the cited FAA handbook reference behind every answer — free to start.
Missing it isn't a verdict on you — it's a sign your prep skipped the why behind it. Memorizing answer letters is exactly what leaves gaps like this. Here, every answer explains the reasoning and cites the FAA source it comes from, so the concept holds on test day and at the checkride oral.
Study this concept
Plain-English explanations of the key ideas behind AA.II.D.R1, grounded in the FAA handbooks.
Related ACS codes in D. Taxiing and Sailing (ASES, AMES)
Other elements the FAA tests under this same Task — review them together.
- AA.II.D.R2Porpoising and skipping.
- AA.II.D.R3Partial completion of checklist(s).
- AA.II.D.R4Low visibility taxi and sailing operations.
- AA.II.D.R5Other aircraft, vessels, and hazards.
- AA.II.D.R6Gear position in an amphibious airplane.
- AA.II.D.R7Confirmation or expectation bias as related to taxi instructions.
- AA.II.D.S1Receive/record taxi instructions, read back/acknowledge taxi clearances, and review taxi routes…
- AA.II.D.S10Exhibit procedures for steering and maneuvering while maintaining proper situational awareness…
+ 12 more elements in this Task.
Common question
Why is gear position such a big deal for amphibious airplanes during taxi and sailing?
Because the correct gear configuration depends entirely on whether you're operating on land or water, and having it wrong for the surface you're using can cause loss of control or structural damage; always verify gear position matches the current environment before you move.
What is an FAA ACS code?
The FAA's Airman Certification Standards (ACS) break each certificate into Areas of Operation, Tasks, and specific Knowledge (K), Risk Management (R), and Skill (S) elements. Every knowledge-test question maps to one code like AA.II.D.R1. When you miss a question, your Airman Knowledge Test Report lists its code so you know exactly what to review.
Have a whole list of codes from your report? Paste them all into our free ACS code lookup to see every weak area at once — or browse the aviation glossary for plain-English definitions.