NETWORK / OVERVIEW

European aerodrome network

12 stations3 distribution pathsCurrent snapshot

Monitored stations12Current preview scope

Source paths online3 / 33 paths returning data

Reports aligned6Latest observation key

Needs attention6Difference, lag or incomplete

NETWORK STATE

Latest station events

Snapshot 20s ago

Station	Observation	Paths	Integrity	State
EFHKHelsinki Airport	12/16:50Z	AMN	3/3 fingerprinted	Aligned
EPWAWarsaw Chopin Airport	12/16:30Z	AMN	3/3 fingerprinted	Aligned
LFPBParis–Le Bourget Airport	12/16:30Z	AMN	3/3 fingerprinted	Aligned
EHAMAmsterdam Airport Schiphol	12/16:25Z	AMN	3/3 fingerprinted	Aligned
EGLCLondon City Airport	12/16:50Z	AMN	3/3 fingerprinted	Source lag
LEMDAdolfo Suárez Madrid–Barajas Airport	12/16:30Z	AMN	3/3 fingerprinted	Aligned
LTACAnkara Esenboğa Airport	12/16:50Z	AMN	3/3 fingerprinted	Source lag
LIMCMilan Malpensa Airport	12/16:50Z	AMN	3/3 fingerprinted	Source lag
ESSAStockholm Arlanda Airport	12/16:50Z	AMN	3/3 fingerprinted	Source lag
EDDFFrankfurt Airport	12/16:50Z	AMN	3/3 fingerprinted	Source lag
LOWWVienna International Airport	12/16:50Z	AMN	3/3 fingerprinted	Source lag
EIDWDublin Airport	12/16:30Z	AMN	3/3 fingerprinted	Aligned

LIMC

Italy

Milan Malpensa Airport

Source lagAll paths returned a report, but their latest observation times differ.

Permanent station page

NORMALIZED EVENT

METAR.OBSERVED

preview_c2ab18acc1d0

Station: LIMC
Observed at: 12 Sep 16:50:00Z
Snapshot collected: 12 Sep 16:56:12Z
Revision: Current snapshot
Available paths: 3 / 3
Integrity: Source lag

Exact TAC / selected representationMETAR LIMC 121650Z 20003KT 160V220 CAVOK 25/15 Q1021 NOSIG

SHA-256c2ab18acc1d046d12f2364e6b23b4c8b937abc0c2f4ee3eae21859025997c0aa

SOURCE TRACE

Captured evidence

UTC

Aviation Weather Center Data APIAWC receiptTime (report-specific)
12 Sep 16:55:12Z
MET Norway TafmetarHTTP Last-Modified (response-wide)
12 Sep 16:56:12Z
NWS TGFTP station filesHTTP Last-Modified (station file)
12 Sep 16:55:16Z

SOURCE INTEGRITY

Evidence behind the event

All paths returned a report, but their latest observation times differ.

Path	Observation	Source timestamp	Fingerprint	Result
Aviation Weather Center Data API	12/16:50Z	12 Sep 16:55:12Z	`c2ab18acc1d046d12f2364e6b23b4c8b937abc0c2f4ee3eae21859025997c0aa`	Captured
MET Norway Tafmetar	12/16:20Z	12 Sep 16:56:12Z	`912196c31892fe63da663bb4b53bc81093d6aa9ec5808ae19eaf5d5d626814dc`	Captured
NWS TGFTP station files	12/16:50Z	12 Sep 16:55:16Z	`a57f1b759988b15f56e81b8f6ed97d1036ddf33c6b61d8d4fe76147ac5e25cfc`	Captured

EVENTS / CURRENT SNAPSHOT

Evidence and conditions

Preview logic

EVENT MODEL / CURRENT SNAPSHOT

Every current condition stays explicit

LIMC

12 Sep 16:56:12Z
Snapshot integrity classified
Current state: Source lag.
12 Sep 16:56:12Z
Source lag present
At least one path exposes an older observation key.

AUTOMATION / PLANNED

Turn a condition into a signal

Controls are illustrative

ALERT RULES

Workspace routing

Not armed

01

Expected report missingSignal when no new observation is visible after its expected window.

120 sec

02

Source content divergesSignal when meaningful TAC tokens differ for one observation key.

Any path

03

Correction presentEmit an event when COR is present in captured current-snapshot evidence.

Immediate

RETENTION + INTEGRITY

Evidence survives normalization

Planned

01
Original representationExact current TAC remains attached to its source provenance.
Inspect
02
Revision chainNIL, AUTO, SPECI and COR remain explicit in the planned history model.
Planned
03
Content identitySHA-256 fingerprints expose selected-string identity.
Verifiable
04
Retention policyLicence-aware workspace controls.
To be set