Aruba and San Marino signed an aircraft-oversight framework on 7 September.
The Department of Civil Aviation Aruba and the San Marino Civil Aviation Authority set out how the two will share regulatory functions. San Marino remains the state of registry. Aruba acts as the state of operator for aircraft placed under its air operator certificates.
Eligible aircraft will be listed by type, registration mark and serial number in a dedicated schedule. San Marino keeps the airworthiness certificate. Aruba verifies operational compliance. The authorities will hold annual reviews and share inspection access.
The agreement runs for an initial three years and can be renewed by mutual consent. It sits under Article 83 of the Convention on International Civil Aviation, the standard mechanism for one contracting state to transfer specific registry functions to another.
Both flags already draw owners who want a neutral jurisdiction and an English-language regulator. Aruba's P4 prefix has grown alongside its AOC offering. Sino Jet added a second Gulfstream G700 to the Aruba register earlier this month.
For an owner, the practical effect is a defined path to commercial charter under an Aruba AOC while retaining a San Marino registration. The framework does not transfer any regulatory function; it defines coordination between the two authorities.
Jorge Colindres, executive chairman of the Registry of Aruba, said the arrangement creates a clear framework for aircraft owners and operators whose registration and commercial operating requirements span both jurisdictions. David Colindres, president of the San Marino Aircraft Registry, said international aircraft ownership increasingly requires regulatory structures that recognise how aircraft are actually operated.
Source: Corporate Jet Investor, 8 September 2026.