Airworthiness Standards; Flight Control System Details.
The 2026 edition is the latest for the 67th Edition of the IATA Dangerous Goods Regulations (DGR). Download 21681 pdf
The official guide is available at IATA.org . Option 3: Other Technical Standards If neither of the above fits, "21681" might refer to: Airworthiness Standards; Flight Control System Details
Technical standards like 21681 are frequently updated; ensure you have the version currently in effect (e.g., the 2026 IATA guidance). Download 21681 pdf
Standards for determining the saponification value in binders for paints. Download Tips
International standards for forestry machinery and portable chain-saws.
This is the most likely match for a specific document download search. is a rule published by the Federal Aviation Administration (FAA) .