What is the current Part 107 exam weighting?

Regulations 48%, Airspace 20%, Weather 5%, Loading & Performance 2%, Operations 25%, effective September 29, 2025 (UAG_Information_Bulletin.pdf, p. 4).

Why do some sites show different percentages, like Operations at 35–45%?

Those sites are quoting the FAA-S-ACS-10B Knowledge Test Blueprint appendix, which the FAA declared obsolete effective 2025-09-29 (community_advisory_August_2025.pdf, p. 3). The PSI UAG Applicant Information Bulletin is the current authority.

Did the test questions themselves change, or just the weighting?

Just the weighting. The same advisory states the UAG test topics and subject matter did not change, and there was no reduction in test time allotment (community_advisory_August_2025.pdf, p. 3).

How many questions are on the test, and what score do I need to pass?

60 scored questions plus 5 unscored validation questions, in 120 minutes, with 70% correct required to pass — 42 of the 60 scored questions (UAG_Information_Bulletin.pdf, p. 4).

What's Actually on the Part 107 Test

The current Part 107 exam weighting (48/20/5/2/25), why the old ACS blueprint is obsolete, and all 131 FAA knowledge codes grouped by area and task.

Short version: as of September 29, 2025, the Part 107 (UAG) knowledge test is weighted Regulations 48% · Airspace 20% · Weather 5% · Loading & Performance 2% · Operations 25%. A handful of sites already print these numbers. Almost none explain that they replaced a different, now-retired blueprint — or why a reader might be staring at two contradictory sets of percentages for the same exam.

The current specification

Source: UAG_Information_Bulletin.pdf p. 4 (PSI Unmanned Aircraft General – Small Applicant Information Bulletin, "Unmanned Aircraft General - Small Test Specifications"), effective 2025-09-29.

Content area	ACS	% of test	≈ items (of 60)
regulations	UA.I	48%	29
airspace	UA.II	20%	12
weather	UA.III	5%	3
loading and performance	UA.IV	2%	1
operations	UA.V	25%	15

Item counts are this site’s own rounding of each percentage against the 60 scored questions on the exam (UAG_Information_Bulletin.pdf p. 4 (PSI Unmanned Aircraft General – Small Applicant Information Bulletin, "Unmanned Aircraft General - Small Test Specifications"), which also states the 60-scored/5-unscored structure) — the bulletin itself publishes percentages, not a fixed per-area count, so a real test can vary by an item or two around these figures.

Why there are two different sets of numbers

The FAA’s August 2025 Airman Testing Community Advisory says, in its own words:

“The assessment of the UAG Knowledge Test will make the current testing blueprint found in the Remote Pilot-Small Unmanned Aircraft Systems Airman Certification Standards (FAA-S-ACS-10B) (UAS ACS) obsolete. The updated test blue print can be found at this link: UAG_Information_Bulletin.pdf. Please refer to this Applicant Information Bulletin until the UAS ACS can be updated with the new information.”

(community_advisory_August_2025.pdf, p. 3.)

The replacement didn’t come out of nowhere: the bulletin states the new allocation “was determined by the industry-wide job task analysis study completed in 2025” (UAG_Information_Bulletin.pdf, p. 4) — a periodic FAA review of what the job of flying a small UAS actually requires, independent of the test questions themselves. The same advisory page is explicit that nothing about the subject matter changed, only how much of the test each area now accounts for: “The UAG test topics and subject matter did not change as a result of the assessment process… There is no reduction in test time allotment.”

Here is the retired blueprint next to the current one:

Content area	ACS	FAA-S-ACS-10B range (obsolete)	Current (effective 2025-09-29)
regulations	UA.I	15–25% (obsolete)	48%
airspace	UA.II	15–25% (obsolete)	20%
weather	UA.III	11–16% (obsolete)	5%
loading and performance	UA.IV	7–11% (obsolete)	2%
operations	UA.V	35–45% (obsolete)	25%

Sources: retired ranges from uas_acs.pdf, p. A-1, Appendix 1, Knowledge Test Blueprint — declared obsolete by community_advisory_August_2025.pdf, p. 3; current figures from UAG_Information_Bulletin.pdf, p. 4.

In plain terms: Regulations roughly tripled in weight, Operations was cut by about a third, Weather and Loading & Performance nearly disappeared, and Airspace barely moved.

Many study sites still publish the retired ranges. If a breakdown you’ve seen elsewhere doesn’t match the current-column numbers in the table above, that page hasn’t caught up to the 2025-09-29 change — it’s quoting the appendix the FAA itself calls obsolete, not the bulletin that superseded it. Use the table above instead.

Test structure: 60 scored, 5 unscored, 120 minutes, 70% to pass

Source: UAG_Information_Bulletin.pdf, p. 4 — “60 [scored questions] · 5 [unscored validation questions] · 120 Minutes · 70% correct [passing score].” 70% of 60 scored questions is 42 correct answers, the number this site’s mock exam uses as its pass mark.

The 5 unscored validation questions are mixed in with the scored ones and aren’t identified to you during the test. Per the bulletin’s own footnote: “These questions will not be scored, and the allotted time for the exam includes sufficient time required to respond to validation questions… The administration of such non-scored validation questions is an essential step in the exam development process, as they allow the FAA to evaluate the statistical performance of new questions before they are included in the sets of scored questions.”

If you fail, UAG_Information_Bulletin.pdf, p. 4 sets a 14-day waiting period before you can retest, with no instructor endorsement required to retest.

All 131 ACS knowledge codes

FAA-S-ACS-10B remains the sole authority for the knowledge codes themselves — only its blueprint percentages were retired, not the codes or their text. Every code below is generated from this site’s acs-codes.json, so this list can’t silently drift out of sync with the question bank.

Area I — Regulations

Task I.A — General

UA.I.A.K1 — Applicability of 14 CFR part 107 to small unmanned aircraft operations.
UA.I.A.K2 — Definitions used in 14 CFR part 107.
UA.I.A.K3 — The ramifications of falsification, reproduction, or alteration of a certificate, rating, authorization, record, or report.
UA.I.A.K4 — Accident reporting.
UA.I.A.K5 — Inspection, testing, and demonstration of compliance.
UA.I.A.K6 — Multiple category sUAS.
UA.I.A.K7 — Record retention.
UA.I.A.K8 — Previously manufactured sUAS.

Task I.B — Operating Rules

UA.I.B.K1 — Registration requirements for sUAS.
UA.I.B.K2 — Requirement for the sUAS to be in a condition for safe operation.
UA.I.B.K3 — Medical condition(s) that would interfere with safe operation of an sUAS.
UA.I.B.K4 — Responsibility and authority of the remote PIC. a. Allowing a person other than the remote PIC to manipulate the flight controls
UA.I.B.K5 — Regulatory deviation and reporting requirements for in-flight emergencies.
UA.I.B.K6 — Hazardous operations. a. Careless or reckless b. Dropping an object
UA.I.B.K7 — Operating from a moving aircraft or moving land- or water-borne vehicle.
UA.I.B.K8 — Alcohol or drugs and the provisions on prohibition of use.
UA.I.B.K9 — Daylight operations.
UA.I.B.K10 — Visual line of sight (VLOS) aircraft operations.
UA.I.B.K11 — Requirements when a visual observer is used.
UA.I.B.K12 — Prohibition of operating multiple sUAS.
UA.I.B.K13 — Prohibition of carrying hazardous material.
UA.I.B.K14 — Staying safely away from other aircraft and right-of-way rules. a. See and avoid other aircraft and other potential hazard considerations of the remote PIC
UA.I.B.K15 — Operations over human beings (Refer to Area of Operation I, Task E).
UA.I.B.K16 — Prior authorization required for operation in certain airspace.
UA.I.B.K17 — Operating in the vicinity of airports.
UA.I.B.K18 — Operating in prohibited or restricted areas.
UA.I.B.K19 — Flight restrictions in the proximity of certain areas designated by notice to airmen (NOTAM).
UA.I.B.K20 — Preflight familiarization, inspection, and actions for aircraft operations.
UA.I.B.K21 — Operating limitations for sUAS. a. Maximum groundspeed b. Altitude limitations c. Minimum visibility d. Cloud clearance requirements
UA.I.B.K22 — Requirements for a Remote Pilot Certificate with an sUAS rating.
UA.I.B.K23 — Automated operations.
UA.I.B.K24 — Civil twilight operations.
UA.I.B.K25 — Night operations.
UA.I.B.K26 — Transportation of property.
UA.I.B.K27 — ATC transponder equipment prohibition.
UA.I.B.K28 — ADS-B Out prohibition.

Task I.C — Remote Pilot Certification with an sUAS Rating

UA.I.C.K1 — Offenses involving alcohol or drugs.
UA.I.C.K2 — The consequences of refusing to submit to a drug or alcohol test or to furnish test results.
UA.I.C.K3 — The eligibility requirements for a Remote Pilot Certificate with an sUAS rating.
UA.I.C.K4 — Aeronautical knowledge recency.

Task I.D — Waivers

UA.I.D.K1 — Waiver policy and requirements.

Task I.E — Operations Over People

UA.I.E.K1 — Remote pilot responsibilities when operating over people.
UA.I.E.K2 — Operations over people at night.
UA.I.E.K3 — Category of operations, including: a. Category 1 b. Category 2 c. Category 3 d. Category 4
UA.I.E.K4 — Selecting an operational area.
UA.I.E.K5 — Minimum distances from a person.
UA.I.E.K6 — Operations over moving vehicles.
UA.I.E.K7 — Modifications to an sUAS.
UA.I.E.K8 — Closed and restricted access sites.
UA.I.E.K9 — Remote Pilot operating instructions.
UA.I.E.K10 — Required components and Category declaration.
UA.I.E.K11 — Optional components.
UA.I.E.K12 — Applicant produced, designed, or modified sUAS for operations over people.
UA.I.E.K13 — Declaration of Compliance (DoC).
UA.I.E.K14 — Maintenance of an sUAS that is eligible for operations over people.
UA.I.E.K15 — Means of Compliance (MoC).
UA.I.E.K16 — Impact kinetic energy.
UA.I.E.K17 — Exposed rotating parts.

Task I.F — Remote Identification (RID)

UA.I.F.K1 — Standard remote identification.
UA.I.F.K2 — Alternative remote identification.
UA.I.F.K3 — Operations for aeronautical research.
UA.I.F.K4 — ADS-B Out.
UA.I.F.K5 — Confirmation of identification.
UA.I.F.K6 — Minimum message elements broadcast for remote identification.
UA.I.F.K7 — Product labeling.

Area II — Airspace Classification and Operating Requirements

Task II.A — Airspace Classification

UA.II.A.K1 — General airspace: a. Class B controlled airspace b. Class C controlled airspace c. Class D controlled airspace d. Class E controlled airspace e. Class G uncontrolled airspace
UA.II.A.K2 — Special-use airspace, such as prohibited, restricted, warning areas, military operation areas, alert areas, and controlled firing areas.
UA.II.A.K3 — Other airspace areas, such as Airport Advisory Services, Military Training Routes (MTRs), Temporary Flight Restrictions (TFRs), Parachute Jump Operations, Terminal Radar Service Areas (TRSAs), National Security Areas (NSA) and Visual Flight Rules (VFR) routes.
UA.II.A.K4 — Air Traffic Control (ATC) and the NAS.

Task II.B — Airspace Operational Requirements

UA.II.B.K1 — Basic weather minimums.
UA.II.B.K2 — ATC authorizations and related operating limitations.
UA.II.B.K3 — Operations near airports.
UA.II.B.K4 — Potential flight hazards. a. Common aircraft accident causal factors b. Avoid flight beneath unmanned balloons c. Emergency airborne inspection of other aircraft d. Precipitation static e. Light amplification by stimulated emission of radiation (laser) operations and reporting illumination of aircraft f. Avoiding flight in the vicinity of thermal plumes such as smoke stacks and cooling towers g. Flying in the wire environment
UA.II.B.K5 — The NOTAM system, including how to obtain an established NOTAM through Flight Service.
UA.II.B.K6 — Operator equipment for night flight.
UA.II.B.K7 — Ground structures and ground structure lighting.
UA.II.B.K8 — Hazards on the ground that do not have lighting.
UA.II.B.K9 — Manned aircraft lighting.
UA.II.B.K10 — sUAS lighting requirements.

Area III — Weather

Task III.A — Sources of Weather

UA.III.A.K1 — Internet weather briefing and sources of weather available for flight planning purposes.
UA.III.A.K2 — Aviation routine weather reports (METAR).
UA.III.A.K3 — Terminal aerodrome forecasts (TAF).
UA.III.A.K4 — Weather charts.
UA.III.A.K5 — Automated surface observing systems (ASOS) and automated weather observing systems (AWOS).

Task III.B — Effects of Weather on Performance

UA.III.B.K1 — Weather factors and their effects on performance. a. Density altitude b. Wind and currents c. Atmospheric stability, pressure, and temperature d. Air masses and fronts e. Thunderstorms and microbursts f. Tornadoes g. Icing h. Hail i. Fog j. Ceiling and visibility k. Lightning

Area IV — Loading and Performance

Task IV.A — Loading and Performance

UA.IV.A.K1 — General loading and performance, including: a. Effects of loading changes b. Balance, stability, and center of gravity
UA.IV.A.K2 — Importance and use of performance data to calculate the effect on the aircraft’s performance of an sUAS.

Area V — Operations

Task V.A — Radio Communications Procedures

UA.V.A.K1 — Airport operations with and without an operating control tower.
UA.V.A.K2 — The description and use of a Common Traffic Advisory Frequency (CTAF) to monitor manned aircraft communications.
UA.V.A.K3 — Recommended traffic advisory procedures used by manned aircraft pilots such as self-announcing of position and intentions.
UA.V.A.K4 — Aeronautical advisory communication station (UNICOM) and associated communication procedures used by manned aircraft pilots.
UA.V.A.K5 — Automatic Terminal Information Service (ATIS).
UA.V.A.K6 — Aircraft call signs and registration numbers.
UA.V.A.K7 — The phonetic alphabet.
UA.V.A.K8 — Phraseology: altitudes, directions, speed, and time.

Task V.B — Airport Operations

UA.V.B.K1 — Types of airports such as towered, uncontrolled towered, heliport, and seaplane bases.
UA.V.B.K2 — ATC towers, such as ensuring the remote pilot can monitor and interpret ATC communications to improve situational awareness.
UA.V.B.K3 — Runway markings and signage.
UA.V.B.K4 — Traffic patterns used by manned aircraft pilots.
UA.V.B.K5 — Security Identification Display Areas (SIDA).
UA.V.B.K6 — Sources for airport data. a. Aeronautical charts b. Chart Supplements
UA.V.B.K7 — Avoiding bird and wildlife hazards and reporting collisions between aircraft and wildlife.
UA.V.B.K8 — Airport and seaplane base lighting.

Task V.C — Emergency Procedures

UA.V.C.K1 — Emergency planning and communication.
UA.V.C.K2 — Characteristics and potential hazards of lithium batteries. a. Safe transportation such as proper inspection and handling b. Safe charging c. Safe usage d. Risks of fires involving lithium batteries
UA.V.C.K3 — Loss of aircraft control link and fly-aways.
UA.V.C.K4 — Loss of Global Positioning System (GPS) signal during flight and potential consequences.
UA.V.C.K5 — Frequency spectrums and associated limitations.
UA.V.C.K6 — Procedures for operations over people.
UA.V.C.K7 — Procedures for operations at night.

Task V.D — Aeronautical Decision-Making

UA.V.D.K1 — Aeronautical decision-making (ADM). a. Effective team communication b. Task management
UA.V.D.K2 — Crew Resource Management (CRM).
UA.V.D.K3 — Situational awareness.
UA.V.D.K4 — Hazardous attitudes.
UA.V.D.K5 — Hazard identification and risk assessment.

Task V.E — Physiology

UA.V.E.K1 — Physiological considerations and their effects on safety such as dehydration and heatstroke.
UA.V.E.K2 — Drug and alcohol use.
UA.V.E.K3 — Prescription and over-the-counter medication.
UA.V.E.K4 — Hyperventilation.
UA.V.E.K5 — Stress and fatigue.
UA.V.E.K6 — Factors affecting vision.
UA.V.E.K7 — Fitness for flight.
UA.V.E.K8 — Physiological aspects of night operation.
UA.V.E.K9 — Night illusions.

Task V.F — Maintenance and Inspection Procedures

UA.V.F.K1 — Basic maintenance.
UA.V.F.K2 — Preflight inspection.
UA.V.F.K3 — Techniques to mitigate mechanical failures of all elements used in sUAS operations such as the battery and any device(s) used to operate the sUAS.
UA.V.F.K4 — Appropriate record keeping.
UA.V.F.K5 — Persons that may perform maintenance on an sUAS.
UA.V.F.K6 — Preflight inspection for night operations.
UA.V.F.K7 — Manufacturer's Declaration of Compliance for Category 2 and 3 operations.

A note on the ACS itself

FAA-S-ACS-10B is still the document that defines these 131 codes, and it hasn’t been reissued since it took effect April 6, 2021. It’s reasonable to expect the FAA to eventually fold the new blueprint back into a revised ACS (a 10C, or a re-issued 10B) rather than leave the appendix permanently stale — when that happens, this page and src/data/blueprint.json get updated together. Last checked against the source documents: 2026-10-21.

Drill the area that’s actually worth the most points first: Regulations practice is 48% of the test and the only area drill live today, with the other four — Airspace, Weather, Loading & Performance, and Operations — coming soon. Or jump straight to the full 60-question mock exam, or back to the exam hub.

Frequently asked questions

What is the current Part 107 exam weighting?: Regulations 48%, Airspace 20%, Weather 5%, Loading & Performance 2%, Operations 25%, effective September 29, 2025 (UAG_Information_Bulletin.pdf, p. 4).
Why do some sites show different percentages, like Operations at 35–45%?: Those sites are quoting the FAA-S-ACS-10B Knowledge Test Blueprint appendix, which the FAA declared obsolete effective 2025-09-29 (community_advisory_August_2025.pdf, p. 3). The PSI UAG Applicant Information Bulletin is the current authority.
Did the test questions themselves change, or just the weighting?: Just the weighting. The same advisory states the UAG test topics and subject matter did not change, and there was no reduction in test time allotment (community_advisory_August_2025.pdf, p. 3).
How many questions are on the test, and what score do I need to pass?: 60 scored questions plus 5 unscored validation questions, in 120 minutes, with 70% correct required to pass — 42 of the 60 scored questions (UAG_Information_Bulletin.pdf, p. 4).