Thank you to John Dorcey, founding SAFE member and former SAFE Executive Director, for this important article. John has been a flight instructor (and AMT) for more than 50 years and is still very active in educating new aviation learners.
A learner pilot working toward a Sport Pilot certificate must log at least five hours of solo flight, including a cross-country of 75 miles. A Private Pilot applicant, under part 61, requires a minimum of ten hours of solo time, with five of those hours devoted to cross-country. In both cases, flying solo is not just a requirement — it’s an essential step toward becoming a confident, safe pilot. Solo means flying completely alone, without an instructor. It’s where students build judgment, learn from mistakes, and discover what it truly means to command an aircraft.
But what about pilots training for the Commercial Pilot certificate? Surprisingly, they are not required to have any additional solo experience. In fact, an applicant for a commercial certificate is not required to fly any solo beyond the time they logged as a Private Pilot applicant. No additional solo, no independent decision-making, no new confidence building. The very experience that shapes safer aviators is left out. Most new academy CFIs begin instructing with only 10 hours of solo flight!

This gap comes from FAR 61.129 (permitted by 61.51(e)(1)(iv) – changed 08/21/2009). This regulatory guidance outlines aeronautical experience required for commercial applicants. Most students train in single-engine airplanes, so consider 61.129(a)(4). The regulation requires:
“Ten hours of solo flight time in a single-engine airplane or 10 hours of flight time performing the duties of pilot in command (PDPIC) in a single-engine airplane with an authorized instructor on board.”
It’s that word “or” that troubles examiners and instructors. PDPIC may sound equivalent to flying solo, but it isn’t. With an instructor on board, the student doesn’t experience the full weight of independent command. As a result, a commercial applicant could reach their flight test with only 20 hours of solo time — a shockingly small amount for someone pursuing a professional certificate.
Every Airman Certification Standards task requires applicants to demonstrate skill, judgment, and risk management. But how can a pilot meet these expectations if they’ve had little true solo experience? To borrow William G.T. Shedd’s words, “A ship is safe in harbor, but that’s not what ships are for.” Likewise, pilots cannot become confident leaders on the flight deck if they are never required to leave the airport — alone.
If our goal is to develop safer, more capable aviators, then solo flying should remain at the heart of pilot training, all the way through the commercial level.
There are many FAA Letters of Interpretation (LOIs) on this subject.
Grannis, Apr 2016
Kuhn, Feb 2014
Dean, Feb 2013
Sun, Aug 2011
Olshock, Mar 2007
SAFE “CFI NOTAMs“ clarifying common CFI mistakes.
SAFE archive of common LOIs
Fly safely (and often). Join John Dorcey on Sept. 14th at 8pm EDT for a live SAFE Webinar explaining a thorough Instrument Proficiency Check.

Thank you to 
Yes – originally the supervised PIC was added to 61.129 for Multiengine aircraft. This was to facilitate an initial commercial certification in MEL without first securing Commercial ASEL. No insurance underwriter would approve solo operations in AMEL, so I guess it made sense. Then the FAA seemed to just say; what the heck, let’s allow it for ASEL, and by the way, who needs practice putting the gear up and down if you have a glass panel display? The FAA has continually removed training and experience requirements that made sense, and lowered testing standards that proved capable of separating competence from incompetence. This has been happening since the late 40’s (CAA) so I guess it’s a trend with momentum. If it’s broke, don’t fix it, just lower the standard. Hard to figure how intelligent aviators within the FAA can make so many poor decisions concerning training and testing.
A missing point on this reg is if you have a night restriction (eg Color deficiency), then you have no choice but to do PDPIC for the long solos CC. I can legally fly solo IFR 250nm away in IMC down to minimums, go missed and land at an alternate. But I cannot fly to the same airport in daylight VFR, and count it for the Comm Solo long CC (I’m night restricted). Regarding TAA, ask 5 DPE’s if dual G5’s , Garmin GPS 650 and GFC AP qualifies as aTAA. 2 of the 5 I asked said yes, the 2 that said no stated the G5 is not a PFD, in there opinion.
“The very experience that shapes safer aviators is left out.” I guess I’d have to say that’s debatable. When it comes time to complete the solo required hours, is the student going to learn more from doing those hours solo, or doing them with a CFI? Isn’t it possible that twice as much may be learned taking the CFI along? It could involve a flight to a more complex airport, or in a bit more marginal weather, or in stronger winds, than what would be permitted or desired on the student’s part with the student going alone, greatly benefiting the learner.
If this lack of solo time were that critical, wouldn’t it show in the incident/accident statistics? I don’t recall any concerns that it does. Every annual report continues to show a good trend.