Explainers

How to read the record

Short pages. Every claim links to a source. They are not a substitute for the rows they describe.

· 2 min read

What the powered-lift rules cover

The FAA's SFAR 120 sets pilot and operating rules for powered-lift aircraft for ten years. It does not issue a type certificate, and it does not cover unmanned aircraft or scheduled airlines.

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· 2 min read

Firm orders and conditional ones

Announced aircraft totals are often memoranda, options, reservations or term sheets. This page shows how those are marked conditional, and the English release that calls only part of an order firm.

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· 2 min read

Certificates are not interchangeable

A type certificate approves a design. A production approval covers a factory. An operator certificate covers whoever flies. A permit or a special airworthiness certificate lets someone test. This page keeps those documents apart.

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