Two of the most demanding jobs in aviation have hard age limits written into American law. One of them ends a career. The other one prevents a career from ever starting.

An airline captain who is flying a perfect line check on the morning of their 65th birthday is finished that afternoon. An air traffic controller who applies to the FAA at 31 is not considered at all, no matter how good they are, unless they fit one of a short list of exceptions. Both numbers were set by government rather than by medicine, and both are being argued about right now.

Here is what the actual rules say, where the numbers came from, and which parts of the usual internet explanation are wrong.

The Pilot Rule Is Two Sentences Long

Almost every explanation of the airline retirement age is longer than the rule itself.

Note what the regulation does not say. It does not say a pilot must stop flying. It does not say anything about a medical finding, a reaction time, or a heart. It says a certificate holder, meaning the airline, may not use that person as a pilot in Part 121 operations. A 66-year-old with a valid first-class medical can still instruct, ferry aircraft, fly corporate under Part 91, tow gliders and hold every certificate they earned. What they cannot do is fly the line for a scheduled US carrier.

The 65 is also new by aviation standards. For almost half a century the number was 60, set by the Federal Aviation Agency in 1959 in what became known as the Age 60 Rule. Congress moved it to 65 with the Fair Treatment for Experienced Pilots Act, effective 13 December 2007. The change came not from a breakthrough in aeromedical research but from a combination of pilot pressure, litigation and the fact that ICAO had already moved first.

Why Congress Cannot Simply Move It to 67

This is the part that most coverage of the current push leaves out, and it is the reason the fight has not been won despite years of trying.

The international ceiling belongs to ICAO, not to Washington. IATA took a proposal to raise the upper age limit to 67 to ICAO’s 42nd Assembly, held from 23 September to 3 October 2025. Member states rejected it, citing safety and age-related health concerns, and agreed instead to continue reviewing pilot age limits through an evidence-based process.

The practical consequence is awkward. Even if the United States raised its own domestic limit tomorrow, a 66-year-old American captain still could not operate an international flight into ICAO member airspace. An airline would be hiring a pilot who could fly Chicago to Denver but not Chicago to Frankfurt, which is precisely the flying that seniority normally buys.

Pilot Kaity walks through the FAA’s own position on the age-67 question from a line pilot’s perspective, which is a useful corrective to the assumption that the pilot community is united in wanting the change.

It is not. The Let Experienced Pilots Fly Act, S. 4452, was introduced on 30 April 2026, with a House companion, H.R. 5523. It would let a pilot serve in multi-crew operations until 67 and would bar the FAA from imposing different medical standards on over-65 pilots on the basis of age alone unless new data justified it. Both bills sit in committee. Neither has passed. The Air Line Pilots Association and a long list of other unions oppose the change, and the FAA has told Congress it would prefer to do more research first.

The Controller Cap Is Not What You Think It Is

Now the other end of the career.

The line you will read everywhere is that federal law bars the FAA from hiring an air traffic controller over 31. That is wrong in an interesting way. The statute that governs this does not contain a number.

That is the whole of the relevant authority. Congress told the Secretary of Transportation to pick a maximum entry age. It did not pick one. The 31 is an agency decision, reviewed and reset by the FAA, which is why it can be and has been adjusted around the edges without new legislation.

The exceptions are where the story is. Honourably discharged veterans who served as military air traffic controllers can generally be appointed up to 35. Applicants with at least 52 weeks of prior air traffic control experience, whether FAA, military or contract tower, can apply past 31 through a separate experienced-controller hiring route. In other words, the cap is not really about age. It is about how many years of service a new hire can bank before the door at the other end closes.

The Door at the Other End

Fifty-six. That is the arithmetic that sets the entry cap: a controller hired at 30 reaches 56 with 26 years in, comfortably past the 25 years needed for a full annuity under the enhanced retirement system. Hire someone at 40 and the government has built a pension liability it cannot fund out of their service.

Both halves of that bargain came from the same place. Public Law 92-297, the Air Traffic Controllers Career Program Act of 16 May 1972, created the early retirement, and the entry-age authority under 5 USC 3307(b) is written to match it. The exemption to 61 is younger than that: an appropriations rider in January 2004, Public Law 108-199, directed the Secretary of Transportation to issue regulations establishing a process allowing individual controllers to delay mandatory retirement to no later than 61.

NBC News went inside the FAA Academy in Oklahoma City, which is the bottleneck the age cap feeds into. Everyone hired under 31 has to get through that building before they are worth anything to a facility.

What the Cap Does to a Shortage

The numbers make the tension obvious. The FAA’s 2026 to 2028 Workforce Plan sets a full staffing target of 12,563 certified professional controllers, cut from the 14,633 the agency had forecast for those years back in 2024. As of April 2026 the agency had roughly 11,000 certified professional controllers deployed across more than 300 facilities, with about 4,000 more somewhere in the training pipeline, and it is trying to hire at least 8,900 people through 2028.

The pipeline leaks badly. Academy washout is real and substantial, and candidates who clear Oklahoma City can still fail to certify at their assigned facility, which is a second filter and often a harsher one. Published washout estimates vary widely by source and by how they count, so treat any single percentage you see with suspicion, including ours: we are not going to print a figure we cannot source to the FAA.

Michelle Khare’s attempt at controller training has been watched over four million times, and it is the best popular demonstration of why the job filters people out so hard. The skill being tested is not knowledge. It is holding a moving three-dimensional picture in your head while talking.

Congress has repeatedly floated adjusting the retirement end of the controller bargain rather than the entry end, which is the cheaper lever politically because nobody has to argue about whether a 40-year-old can learn the job. Whether either end moves, the structural point stands: the FAA is trying to solve a staffing shortage while operating the narrowest hiring window of any safety-critical profession in American aviation.

Two Numbers, One Argument

The symmetry is almost too neat. At one end of a career, a pilot is told that experience stops counting on a birthday. At the other, a would-be controller is told that potential stops counting on a birthday. Neither number came out of a laboratory. Sixty-five is a political settlement from 2007 sitting on top of an international standard. Thirty-one is an actuarial consequence of a 1972 retirement deal.

Both are defensible, and both are being defended, mostly by people whose real argument is about something else. Ask a line pilot about 65 and you will usually end up talking about seniority and career progression. Ask about the controller cap and you will end up talking about pensions. The ages are where those arguments surface.

Sources: 14 CFR 121.383(d) via the eCFR; 5 U.S.C. 8335 and 5 U.S.C. 3307 via the Office of the Law Revision Counsel; Public Law 110-135, the Fair Treatment for Experienced Pilots Act; Public Law 92-297; Public Law 108-199; Congress.gov records for S. 4452 and H.R. 5523; ICAO 42nd Assembly reporting; FAA Air Traffic Controller Workforce Plan 2026-2028; FAA air traffic controller hiring information.