Airman Knowledge Testing Supplement for Commercial Pilot (COMM Testing Supplement)
The Airman Knowledge Testing Supplement for Commercial Pilot (FAA-CT-8080-1E) contains the figures, charts, and reference materials available during the FAA Commercial Pilot knowledge test. It includes performance charts for complex aircraft, weight and balance problems, navigation charts, and weather reference materials specific to commercial pilot operations.
Why This Document Matters
This supplement is used during the Commercial Pilot knowledge test and contains reference materials at a higher level of complexity than the Private Pilot supplement. Performance charts include complex and high-performance aircraft, weight and balance problems are more involved, and weather interpretation requires deeper analysis. Studying with this supplement is essential for CAX test preparation.
Chapter-by-Chapter Guide
What each section covers and the key topics to study
1Performance Charts and Weight and Balance
Complex aircraft performance charts and advanced weight and balance calculations for the commercial test.
Performance Charts and Weight and Balance
Complex aircraft performance charts and advanced weight and balance calculations for the commercial test.
Key Topics
2Navigation and Weather Reference
Navigation charts and weather products referenced in commercial pilot knowledge test questions.
Navigation and Weather Reference
Navigation charts and weather products referenced in commercial pilot knowledge test questions.
Key Topics
Study Tips
- Practice the performance chart problems until you can solve them quickly — the commercial knowledge test has tighter time pressure than the private test and the charts are more complex.
- Master the weight and balance calculations including shift-of-CG problems and multi-step loading scenarios. These are common on the CAX test.
- Cross-reference the supplement with your test prep questions to ensure you can find the correct figure quickly during the actual test.
Frequently Asked Questions
How is this different from the Private Pilot testing supplement?
The Commercial supplement includes more complex performance charts (multi-engine, high-performance aircraft), more involved weight and balance problems, and additional navigation and weather materials appropriate for commercial-level operations. The difficulty level is noticeably higher.
Do I need to study this supplement for the commercial checkride?
You need this supplement specifically for the FAA knowledge test (CAX). For the practical test (checkride), the DPE will use the Commercial ACS as the standard and may reference actual aircraft POH performance charts rather than the testing supplement figures.
Quick Facts
- Document ID
- FAA-CT-8080-1E
- Last Updated
- 2024
- Cost
- Free
- Publisher
- FAA
Applies To
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Airman Knowledge Testing Supplement for Commercial Pilot (FAA-CT-8080-1E) is an official FAA publication available at FAA.gov
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