A friendly guide still needs accountable evidence.
What the 30 × 30 target means
The research target is 30 sources in each of 30 countries, or 900 records. We have not established a common public dataset proving each country’s 30 most-read articles. Search position and display order are not readership rankings. Country pages report reviewed counts and gaps.
Separate reading from discovery
Reviewed records include retrieved article content, relevant passages or public abstracts, with the scope stated. Search or bibliographic information alone remains a candidate; inaccessible material is unavailable. This is not a claim that every underlying paper was read in full. Reading does not independently validate performance or policy effects. Unknown publication dates remain unknown.
Read the source’s perspective
Authorities, university trials and manufacturer descriptions have different roles. Preserve place, crop, year and comparison conditions. Design proposals are Airffic’s own synthesis, not equipment guarantees or operating approvals.
Updates and language
Editorial content is available in Japanese and English. Sir Airffic Go uses light Hiroshima dialect in Japanese while preserving technical meaning. Original sources remain available in their languages. Retain update dates and distinguish historical rules from current changes.
What this research release actually checked
As of 30 October 2026, this release contains 30 records for each of 30 countries or regions: 900 distinct URLs. It includes 853 reviewed records, 44 search candidates and three unavailable sources. Review may cover text, abstracts or relevant passages. For 244 reviewed records, retrieved text was inspected but the precise extent was not recorded; that limitation is explicit. The collection includes guidance, abstracts, manuals and data-platform context as well as articles. Readership ranking, full-text inspection and independent efficacy evidence are separate requirements.