Find a professional reference

Choose the subject, jurisdiction and kind of evidence you need. These routes support learning and source discovery, not operational decisions.

1. Select a subject and evidence type

CNS and ATSEP

Communications, navigation and surveillance (CNS); air traffic safety electronics personnel (ATSEP).

Training and competency context

Annex 10 publication identity: the retained 2021 catalogue record does not establish a volume. Treat it as historical catalogue-level orientation, not a verified current technical passage.

AIS and AIM

Aeronautical information services (AIS) and aeronautical information management (AIM).

Role and information context

Annex 15 publication identity: the retained 16th edition (2018) is historical. A recent link check is not a new edition or effective date.

Filter ICAO reference results · Find US employer evidence, including Maryland

2. Choose a jurisdiction

An Aeronautical Information Publication (AIP) index, amendment, subscription offer and working full reader are different kinds of access evidence.

Browse all publishing jurisdictions · Compare country access evidence

3. Check identity before using a reference

Identify the publisher, document, volume and jurisdiction.
Separate publication and effective dates from the date a link or catalogue was checked.
Read what was actually accessed, and what remains unknown.
Use the official publisher's current authorized source for an operational or legal decision.

This site does not certify competence, currentness, legal compliance or suitability for flight planning. Unknown access is not proof of unavailability.

Read the evidence method