Commercial Regulations
The Stage 3 commercial check focuses heavily on regulations because commercial operations multiply your legal exposure. Below: the key Part 61 sections, the airworthiness rules, and the airspace classes every commercial pilot needs cold. Each topic is its own deep-dive page — every regulation cited links to the live eCFR text, so you can verify any answer against the source.
Pilot certificates & privileges
Certificates & Medical
§ 61.3 documents in possession, § 61.19 certificate duration, § 61.23 medical class & validity, the medical-duration table, and BasicMed.
Commercial Privileges & Limitations
§ 61.133 CPL privileges, the 50 NM XC limit, the no-night-pax-for-hire rule, § 61.31 type ratings, § 61.55 SIC, Part 91/135/133/137 distinctions.
Currency & Logbooks
§ 61.57 day/night passenger currency, instrument currency & IPC, § 61.51 logbooks, logging PIC vs acting as PIC, § 61.60 change of address.
Aircraft & airspace
Aircraft Documents & Airworthiness
ARROW per § 91.203, § 91.205 required equipment, § 91.213 inoperative equipment, § 91.409 inspections (AAV1ATE), § 39.3 Airworthiness Directives, Part 47 registration.
Special-Use Airspace
Restricted areas (§ 73.13), prohibited areas, MOAs, warning areas, alert areas, controlled firing areas, MTRs, NSAs, ADIZ, and TFRs (§§ 91.137–91.145).