The same subject can have more than one number, because each page answers a different question. These are the rules used across the site; when a page uses a different one, it says so.
- Business aircraft in the RAB
- An aircraft in the business segment with a model identified in the catalog, in every status (operational, mark reservation, suspended and cancelled but still viewable), counted by physical airframe: the same serial number of the same model under two registrations (e.g. a mark reservation and a registration) counts once.
- Registration vs aircraft
- A registration is the record (PR-XXX); an aircraft is the physical airframe. An aircraft being imported can hold a mark reservation and a registration at the same time, so registration counts and aircraft counts can differ.
- Model vs family
- The catalog counts one page per family (e.g. Phenom 300). Variants (300, 300E, 300EV) live inside the family. When a card shows the fleet of the whole family, the label says "family".
- Operator
- Whoever is listed in the operator field of the RAB, grouped by CNPJ root (by name when there is no CNPJ). Depending on the page, we count operators with their own profile page, operators of operational aircraft (directory), operators with flights detected in the period, or operators in the business fleet. Each number states its scope.
- Mark reservation
- A registration reserved in the RAB for an aircraft not yet operating in Brazil, usually being imported.
- A registry change is not a sale
- An owner or operator change in the registry is a movement. It may be a sale, a lease, a corporate reorganization or a record correction; the registry does not say which.
- No signal does not mean no flight
- ADS-B coverage is partial. An aircraft with no detected flight may be flying outside coverage; "not tracked" never means "grounded".
- Every number has a date
- Numbers with a source carry the snapshot date (as of). Two pages with different dates can show different values for the same question; the date tells which one is newer.