AA.II.A.S6
Preflight Assessment
What does AA.II.A.S6 mean?
Assess factors related to the environment (weather, airports, terrain, airspace)..
- Area of Operation
- II. Preflight Procedures
- Task
- A. Preflight Assessment
- Element type
- A Skill element — something you must physically demonstrate to your examiner on the practical test (checkride), not the written.
What you need to know
Preflight assessment is bigger than the walk-around inspection — it's a systematic evaluation of you, the airplane, and the environment before you ever accept the flight. Human factors (fatigue, stress, IMSAFE-type self-checks) and external pressures (schedule, passengers, company pressure) affect judgment just as much as a mechanical write-up, so the FAA wants you to recognize when personal or organizational pressure is pushing you toward an unsafe decision. When you find inoperative equipment or other discrepancies, know how to document them and apply MEL/CDL guidance correctly to determine whether the aircraft is legally and practically airworthy for that specific flight — an inop item isn't automatically a no-go if the MEL properly covers it. Finally, tie in the environment (weather, terrain, airspace, airport conditions), any icing/contamination on the airframe requiring proper deicing procedures, and security/ground-coordination concerns (verifying doors, control surfaces, and clearance before moving anything) as equally essential parts of the go/no-go picture.
Why students miss this
Students often treat this task as a simple checklist-memorization exercise when it's really about integrated risk assessment—weighing human factors, external pressures, MEL/CDL limitations, and environmental conditions together rather than in isolation. A common trap is assuming an item is automatically grounding or automatically dispatchable without actually reasoning through the MEL/CDL process, operations specifications, and whether the deficiency affects safe flight under the specific conditions of that trip.
Focus on: Practice working through realistic discrepancy scenarios end-to-end—identify the issue, apply MEL/CDL logic, consider environmental and human factors, and articulate a clear go/no-go decision with rationale.
🎯 Test yourself on this topic
Question 1 of 2You are planning a flight to the West Coast of the United States, which is currently below the published weather minimums for an ILS approach to that airport. Winds are forecast to increase to above 20 knots from the west at your scheduled arrival time. What weather conditions should you expect?
Free practice · no account needed
Drill this area until it sticks
AA.II.A.S6 came from a question you missed on the FAA Airline Transport Pilot Multiengine Airplane knowledge test. Take a free, ACS-aligned Meteorology and Weather Services quiz — instant scoring, explanations, and the cited FAA reference behind every answer.
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.A.S6, grounded in the FAA handbooks.
Related ACS codes in A. Preflight Assessment
Other elements the FAA tests under this same Task — review them together.
- AA.II.A.R1Human performance factors.
- AA.II.A.R2Inoperative equipment discovered prior to flight.
- AA.II.A.R3Environment (e.g., weather, airports, airspace, terrain, obstacles).
- AA.II.A.R4External pressures.
- AA.II.A.R5Aviation security concerns.
- AA.II.A.S1Inspect the aircraft in accordance with an appropriate checklist demonstrating proper operation…
- AA.II.A.S2Coordinate with ground crew and ensure adequate clearance prior to moving doors, hatches, fligh…
- AA.II.A.S3Document any discrepancies found; take corrective action and acknowledge limitations imposed by…
+ 3 more elements in this Task.
Common question
What's the difference between an MEL and a CDL?
The Minimum Equipment List (MEL) addresses inoperative equipment/systems, while the Configuration Deviation List (CDL) addresses missing external parts or panels; both let an aircraft be dispatched under specific conditions but they cover different categories of discrepancies.
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.A.S6. 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.