Know what changed at your airport.
Every 28 days the FAA changes tower hours, frequencies, runways, navaids and approach plates. Amend compares every cycle for every US airport and tells you what matters, in plain English, up to three weeks before it takes effect.
What you get
ACT
Action items first
Tower and Class D hours, frequencies, closed or renumbered runways, decommissioned navaids, new PPR rules: the changes that affect how you fly.
IFR
Instrument procedures
Amended, new and removed approaches, STARs and departures, down to which waypoints moved, with the new plate one tap away.
FYI
Everything else, in plain English
FAA remarks translated from contractions, with the original text always kept alongside.
Watchlists
Watchlists you can share
Save your airports, name the list, and share one link for a whole training area, like amend.watch/list/daytona-training.
History
Two years of history
Every change at every airport since August 2024, grouped by cycle.
iPhone
iPhone app
Keeps your home airport and watchlists on your phone and notifies you when a new cycle affects them. A TestFlight beta is coming soon.
How it works
A daily job downloads the FAA's 28-day NASR data and d-TPP chart index, diffs every US airport, filters the noise with tested rules, and publishes the results here. Remarks are translated with AI; everything else is plain, deterministic code. It's open source on GitHub.
FAA cycle 01 Oct 2026 (upcoming) · updated . Not for navigation. Always use official FAA publications, NOTAMs and a proper preflight briefing. Data: FAA NASR and d-TPP. Source