Airworthy Prep

Part 107 test code

UA.II.B.K4Airspace Classification and Operating Requirements: Airspace Operational Requirements

Part 107 test, area II, task B

Written as ua.ii.b.k4 or UA.II.B.K4 on your score report.

The FAA's wording

Potential flight hazards.

Remote Pilot test standard, FAA-S-ACS-10B, II. Airspace Classification and Operating Requirements

What it means

UA.II.B.K4 is a knowledge element in the Airspace Classification and Operating Requirements area of the Part 107 test. A knowledge element is something the FAA expects you to know, and the written test asks questions on it.

UA
Unmanned Aircraft Systems, the Remote Pilot test standard
II
Area of operation: Airspace Classification and Operating Requirements
B
Task: Airspace Operational Requirements
K4
Knowledge element 4

Seeing it on your score report

Your Airman Knowledge Test Report lists ACS codes to show which elements you got wrong. Seeing UA.II.B.K4 there means at least one of your wrong answers was on this element. Retaking the test? Start with this code and the others on your report.

Sources: FAA-S-ACS-10B, Appendix 3, p. A-5.

Try a sample question on UA.II.B.K4

Airspace Classification and Operating Requirements ยท UA.II.B.K4

Refer to the chart extract. A boxed note near Mount Vernon reads CAUTION: Extensive military flights at 3000' and below. You plan to fly at 300 feet AGL nearby. What is the best response?

Seattle Sectional, 29 Oct 2026 to 24 Dec 2026 (FAA). Extract, not for navigation.

Practice airspace classification and operating requirements

The full Part 107 course has questions on every element in this test area, with an explanation and FAA source for each.