In 2026, modern commercial aviation is incredibly safe, and identifying a "least safe" airplane is difficult because any aircraft with a genuine safety flaw is typically grounded by authorities like the FAA or EASA. Historically, older Soviet-era models like the Tupolev Tu-154 had higher accident rates, but these are largely out of service. In contemporary terms, "safety" is often measured by the number of Airworthiness Directives (ADs) issued. For example, in February 2026, the FAA issued a final rule regarding Boeing 757-200 and -300 series airplanes due to crack findings on winglets, requiring mandatory inspections. While the Boeing 737 MAX suffered a high-profile crisis in the past, it is now one of the most scrutinized and updated aircraft in the sky. Statistically, small general aviation aircraft (private planes) are significantly "less safe" than any commercial jetliner. If you are looking at commercial fleets, the "safest" planes are often the newest long-haul models like the Airbus A350 or Boeing 787, which have near-perfect safety records, while older, less-maintained "workhorse" planes in developing regions tend to carry higher statistical risks.