Changelog · Amend

Oct 2026

Chart history no longer links plates the FAA has taken down. The FAA only keeps a plate online for a couple of editions, so older changes link its d-TPP search instead of a dead page.
Flight schools can email hello@amend.watch to set Amend up for the airports they fly. Every airport page stays free and open, no account needed.
A chart with more than one page shows as one change. The FAA lists each extra page (like TRISH FIVE (RNAV), CONT.1) as its own record, so a multi-page arrival or departure showed up two or three times, in chart history too. A renumbered departure or arrival that dropped a page now says what it replaced, like MINNEAPOLIS ONE replaces MINNEAPOLIS NINE.

Sep 2026

Amend's code is now under the Functional Source License (FSL-1.1-MIT) instead of MIT. It's still public and free to read and use, just not to sell a competing product, and each version becomes MIT two years after it's published.
Report a problem by email at hello@amend.watch, no GitHub account needed. Report a wrong change on an airport page fills in the airport, cycle and page for you.
The docs have an Accuracy and limits page: the test set of real FAA changes and how many a person has checked, the plain-English remark count from the latest build, what Amend doesn't cover, and the official FAA sources to check.
Every scrollbar on the site, the docs' code blocks included, is thin and in the site's own grays, in light and dark.
The remark count on the status page counts only remarks you can read on an airport page. It counted about 800 pavement code lines (PCR VALUE) the FAA moved out of the remarks and into the runway data for 1 Oct 2026 as remarks shown in the FAA's words, but Amend hides them, so the page said 745 of 1,591 remarks read in plain English. Counting what you can see, it's about 94%.
In the sidebar, a long list scrolls in its own box, with Amend's own thin scrollbar, and shows every airport on it, so the rest of the sidebar stays put, also after folding the list and opening it again.
The arrow next to Your lists on the home page, and next to the open list in the sidebar, folds that list down to its name. Each list remembers whether it's folded, in this browser.
W stays as the FAA wrote it in remark translations. The FAA's lists give W two meanings, west and white, and remarks also write W/ for with, so the check couldn't tell a wrong pick from a right one: "W RWY MRKG CONES EV 300 FT", on both ends of one runway, read "West runway markings". Where the translator still spells W out, the remark shows the FAA's words, with a line saying what W can mean.
The docs are now four pages: getting started, using Amend, how it works, and API and data, which documents every public JSON file and field. The status page shows when Amend last checked the FAA for new data, with the recent checks, one every 10 minutes.
On the home page, each airport in “Coming up at your airports” shows which of your lists it's on, and each list's name opens that list. It shows once you have more than one list.
A remark the translator sent back untranslated, like "4 IN LOOSE GRVL, RUTS & DIPS FULL LEN.", is now asked again instead of kept. Until it's translated, a line under it says so. 13 remarks in the October preview were stuck that way. H24 may read "continuous operation", its meaning in the Chart Supplement, where the check used to reject it for dropping the 24.
In this cycle's and the next cycle's changes, a remark kept in the FAA's words because of a contraction Amend can't verify, or a translation that failed its checks, now says why under it. NA and N/A stay as the FAA wrote them, with a line saying what they can mean: the FAA's lists say not authorized and not applicable, but remarks also use them for not available. Runways are written the FAA's way, like runway 33C or 15C/33C, instead of four different ways. HI PER, HIGH PER and LOW PER now read "high performance" and "low performance", and TRANS ALERT reads "transient alert": every remark in the FAA's data that writes them means that. Past cycles' translated remarks follow the same rules.
The status page is shorter: whether Amend is up to date, one line for each part of the service, the last 30 runs at a glance and any problems, with every step of the latest build folded underneath. The docs now walk through the whole process, from the FAA posting a cycle to a change on your screen.
The status page's list of contractions with no verified meaning no longer counts words that aren't contractions: addresses, four-letter airport codes like KSPS, center codes like ZOA, names like DON and LEE, and plain words like CAR and TOW. The rules were checked against every remark in the FAA's October data.
Remarks that write approach as APRCH or APPCH, or extended as EXTNDD, now read "approach" and "extended". The FAA's own contractions are APCH and EXTD, and every remark in the FAA's data that spells them this way means that. TEMP stays as written: the FAA's list says it means temperature, and remarks use it for both temperature and temporary.
A ++ after a time in a remark now reads "(one hour earlier during daylight saving time)". The FAA's data writes ++ where the Chart Supplement prints ‡, and the Chart Supplement's legend says those hours are one hour earlier during daylight saving time. Translations may also change a word's form to read as English: "WHEN TWR HR EXTN" can read "when tower hours are extended".
Moving between pages fades instead of flashing, and pages you point at load before you click. Get alerts on an airport page opens right under the button. A list's name in the sidebar opens that list, and the sidebar always has open the list you're looking at. Alerts no longer point at an outside email service: the alert link goes into a news reader app.
FOD in remarks now reads "foreign object debris", the meaning in the FAA's contractions list, since remarks use it for loose material on the pavement. The translator is also told to write in normal capitalization instead of leaving plain words in capitals.
A status page shows whether Amend is current and every step of each recent run: the FAA files it downloaded, the checks it ran and whether it was published.
Remark translations are held to a stricter check. They have to keep every code (like 100LL or D523-4244), every + or - on a height, every ++ after a time and the order of the numbers, and they can't add words the FAA text doesn't have, like "the runway" or "is available". About 1,000 translations that failed it now show the FAA text.
Pages switch from upcoming to in effect at exactly 0901Z on cycle day, even if you have the page open, using the server's clock if your device's is off. Amend also checks the FAA for new data every 10 minutes.
Docs, Privacy and Terms now say how to tell the FAA when its own data is wrong, what Amend can't see between cycles, what choices you have about your data, and that other sites' rules apply when you follow a link.
The sidebar stays in place while you scroll, and its lists open one at a time with a quick slide.
The sidebar looks the same on every page, search included, and each list in it folds open or shut and stays the way you left it. Alerts are explained in plain words, and the old About page is now About, Docs, Changelog, Privacy and Terms.
Keep as many lists of airports as you like and share any of them as one link, and get alerts for any airport or list.
A new logo and a cleaner look, and pages that say how Amend works, what it doesn't cover, what it stores and how to report a problem.
New FAA data is picked up within hours of being posted, and a failed download can no longer publish a half-built site.
Survey bookkeeping, like a glide slope elevation rounded by a tenth of a foot, no longer counts as an action item (from the 01 Oct 2026 cycle on).
About 470 remark translations that got a contraction or a number wrong were thrown out. The FAA text shows instead.
A New label on changes you haven't seen, a countdown to each 0901Z changeover, and a calendar of cycle dates.
A desktop layout, and light and dark mode that follow your device.
Class B, C, D and E surface area changes, told from each airport's point of view.