A certificated flight instructor with instrument rating (CFII) who owns a Cessna 182 is asking the correct regulatory question, but the framing of the question reveals a common conflation between two distinct legal frameworks: 14 CFR 61.113's pro rata cost-sharing provision, which applies to private pilots sharing flight expenses with passengers, and the entirely separate authority under 14 CFR 61.193 and 61.133 that permits certificated flight instructors to receive compensation for instruction. The CFII in this scenario does not need to satisfy the pro rata rule at all — that rule governs non-instructor private pilots who want to defray costs with passengers. A CFII giving actual flight instruction in a personally-owned aircraft and charging a combined wet rate for aircraft use plus instruction time is operating squarely within their certificate privileges. The practical takeaway is that the poster's instinct to frame this as formal instruction at a bundled rate is correct, but the reason behind it is not about pro rata compliance — it is about correctly characterizing the service being rendered.
The legal distinction matters because the "just pay for gas" framing the poster is wisely avoiding would create a different and more serious problem. Accepting compensation for transportation — even informally — without holding the appropriate operating authority can constitute unlicensed commercial air transportation. The FAA's "holding out" doctrine, developed through decades of enforcement actions and legal interpretations, broadly captures scenarios where a pilot or aircraft owner makes themselves available to the public for compensation in a way that resembles air carrier operations. By contrast, a CFI openly marketing instruction services, requiring a legitimate instructional purpose for each flight, maintaining logbook endorsements and lesson records, and billing at a stated instructional rate is engaged in the practice for which their certificate was issued. The engine break-in cross-country flights, with their requirement for extended cruise power settings and avoidance of pattern work, are actually well-suited to structured instrument training and cross-country proficiency building — giving the instructional framing genuine operational substance rather than regulatory window dressing.
Pilots and operators considering this type of arrangement should also note several practical compliance checkboxes that the original post does not address. Aircraft hull insurance is the most immediate concern: many personal aircraft policies either exclude or significantly limit coverage when the aircraft is used for instruction given to persons other than immediate family, and the CFII should obtain written confirmation from their insurer before conducting compensated instruction in their own aircraft. The 182's qualification as a High Performance aircraft (Continental or Lycoming engines rated above 200 horsepower) means logged PIC time in it satisfies the HP endorsement requirement under 61.31(f), but TAA qualification under 61.1 requires a Primary Flight Display, a multi-function display, and a two-axis autopilot — a standard steam-gauge 182 does not qualify regardless of GPS equipment. Students paying to build TAA time specifically should understand what avionics configuration actually triggers that regulatory category.
The broader context here reflects an ongoing tension within general aviation between the desire by experienced certificated instructors to provide accessible, affordable training and the regulatory framework's sharp distinction between instruction and air transportation. The FAA has generally been permissive toward CFI-owned aircraft instruction when the activity is structured, documented, and clearly instructional in nature, but enforcement actions have periodically targeted arrangements that appeared to blur that line. For the pilot population the CFII is targeting — instrument students and commercial candidates needing cross-country, hood, and PIC hours — the arrangement as properly structured is straightforwardly legal and fills a genuine gap in accessible, real-world instrument training that too often gets compressed into short local flights rather than genuine en-route scenarios. Using engine break-in hours to conduct that training, rather than flying alone, represents exactly the kind of operational efficiency that keeps small flight training operations viable.