I'm an A&P or IA

Written FAA legal interpretations of specific regulations — the de-facto FAA position used in enforcement.

Non-binding FAA guidance documents that elaborate on regulations.

Modern FAA document repository. ADs, AFS bulletins, FSIMS, TCDS, AC index, orders, notices.

Searchable index of TCDS PDFs by make/model. The legal source for type-cert basis.

FAA guidance on aircraft maintenance record-keeping requirements.

How AD compliance works — the official guidance document.

File and search Service Difficulty Reports — not a pretty UI, but the official system.

Inspection Authorization renewal requirements + qualifying activities.

The form filed for any major repair or alteration. Lives in the aircraft records permanently.