aviconv-aixm

AIXM 5.1.1 and 5.2 reader (write stays 5.1.1) for full AIP datasets, plus GeoJSON export, AIRAC-cycle diff, and a temporality flattener that materialises a snapshot at any date T.

Part of the aviconv monorepo.

Install

pip install aviconv-aixm

This pulls in aviconv-core (shared XML / coords / errors) and brings the aviconv aixm … subcommands under the umbrella aviconv CLI.

Status

  • v0.6.0 covers the AIP feature core: AirportHeliport, Runway, RunwayDirection, Navaid (VOR/DME/NDB/ILS/TACAN), DesignatedPoint, Airspace + AirspaceVolume, Route + RouteSegment, Procedure (envelope), Obstacle, Organisation, Unit.
  • Version support: reads both AIXM 5.1.1 and 5.2 (version="auto" by default, sniffed from the document's namespace) into the same typed model — no property renames between the two dialects across any modelled feature type. The writer stays 5.1.1-only; there is no version-conversion feature. See the docs for the full support matrix.
  • TaxiwayElement, ApronElement, full Procedure leg algebra, and the ADR-23.5.0 extension surface are deferred to a future release.
  • Streaming reader (constant memory on 100MB+ datasets) via lxml.iterparse. Writer streams via lxml.etree.xmlfile.

Library

from aviconv_aixm import (
    read_aixm, read_aixm_dataset,
    write_aixm,
    to_geojson,
    diff_datasets,
    snapshot_at,
)

# Stream features one at a time (constant memory on 100MB+ inputs)
for feature in read_aixm("aip.xml"):
    print(feature.gml_identifier.value, type(feature).__name__)

# Materialise the whole dataset (random access for diff/flatten)
ds = read_aixm_dataset("aip.xml")
print(len(ds.features), "features")

CLI

aviconv aixm parse      aip.xml > aip.ndjson
aviconv aixm to-aixm    aip.ndjson -o roundtrip.xml
aviconv aixm to-geojson aip.xml -o aip.geojson
aviconv aixm diff       cycle_2603.xml cycle_2604.xml --format json
aviconv aixm flatten    aip.xml --at 2026-05-09T00:00Z -o snapshot.xml
aviconv aixm validate   aip.xml --strict

# --version [auto|5.1.1|5.2] on every read-side subcommand (not to-aixm):
aviconv aixm parse aip_5.2.xml --version 5.2 > aip.ndjson

Round-trip semantics

AIXM round-trip is field-level, not byte-stable: namespace prefix choices and gml:id values are intentionally not preserved on read. gml:identifier (the stable feature ID) is preserved, as are all modelled feature properties and time-slice metadata.

Licence

MIT. The vendored AIXM 5.1.1 / GML 3.2.1 / ISO 19139 / xlink schemas retain their upstream licences — see LICENSES/.

Project links

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Credits

Author: aviconv contributors

GitHub Statistics

Data verified by PyPI on Aug 8, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT License (MIT)

Requires

Python >=3.11

Tags

aip airac aixm aviation eurocontrol faa geojson icao

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