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Card 730 of 9802026-09-27 issue

Observed arrival · 2026-09-27

regbook: “Where does it say that?”

regbook.app Visit website
Editorial interest 78/100 Selection signal · not a rating of the site

An iPhone reference app for pilots that presents the FAR, AIM, and ACS with offline access, search, and answers linked to exact paragraphs.

Landing page captured for the 2026-09-27 issue.
For
Student pilots, CFIs, and checkride candidates
Worth noticing
Its sample change comparison is explicitly labeled an illustration, not an actual rule change; the page says updates come from the eCFR and FAA.

Field notes

The page lays out a regulation-reading workflow around paragraphs: search by pilot shorthand, save or share a passage, and ask about a selected section. It says the reference includes 14 FAR parts, the AIM, the Pilot/Controller Glossary, and the ACS. Its update example is carefully qualified as an illustration rather than a real rule change, and its oral-prep answer is labeled a study aid rather than legal authority.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central

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regbook.app

Landing page observed 2026-09-27. The live site may have changed.