Atlas / Tools / NOTAM Briefing Decoder
Atlas · Tools
Paste a briefing. See what matters.
Every NOTAM gets decoded, classified, and scored against your route. Three columns — Critical, Operational, Advisory — sorted by what's active during your flight window. FAA contractions expanded inline, Q-codes interpreted, "so what" derived from the agency's own fields. Nothing leaves your browser.
Each NOTAM gets flagged when it touches a field on your route. Empty for site-wide view.
Filters
Paste a briefing on the left. Click "Load sample" to see how it works.
01 / How "so what" is derived
From the agency's own fields. Not editorial commentary.
Category
Comes from the Q-code subject letter (M, L, N, F, C, R, A, W, O) or, for FAA short-format NOTAMs, from body keywords. Maps to runway closure, lighting, navaid, airspace, TFR, obstruction, service, comms, taxiway, or general.
Severity
Deterministic mapping per category + status. TFR / runway closure / airspace = critical. Taxiway / lighting / navaid OTS = operational. Service / cancelled / decommissioned = advisory. No human judgment.
Consequence
A category-specific template that names the operational impact: "Runway X unusable for takeoff or landing during the effective window," "Navaid out of service — any approach that requires it is unavailable," etc. The runway / navaid / taxiway identifier is pulled from the body, not invented.
Workaround
A category-specific template that names the standard pilot response — file alternate routing, brief alternate frequency, check ALS-out minimums per 91.175. We surface what experienced pilots already do; we don't tell you what's safe for your flight.
Audience
IFR / VFR / both — read from the Q-code traffic field (I, V, IV) or body mention.
Privacy
Decoder runs in your browser. Briefing text never leaves the page. No analytics, no logging, no agency cookies.