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Important Notice, Disclaimer & Limitation of Liability

Please read before relying on any content on this page or on any record downloaded from it.

1. Purpose and intended users. This page is an independent educational and informational reference for competent, suitably trained and authorised airfield ground lighting (AGL) and aerodrome personnel. It is not professional engineering, legal or regulatory advice, and using it creates no professional or client relationship. Learning-path and Academy references describe stages of learning only and are not a certification, accreditation or authorisation.
2. Safety. Work on series circuits, constant current regulators (CCRs), isolating transformers, cables, connectors and lighting fixtures can be fatal. Always apply the aerodrome’s permit-to-work and isolation/LOTO procedures, prove dead, use correctly rated instruments and PPE, and follow the manufacturer’s instructions. Nothing here authorises work on live equipment or the bypassing of any safety device or interlock.
3. Aviation operations. Nothing on this page authorises return to service, the installation, adjustment or modification of any aviation visual aid, a change of operating category (CAT I/II/III), a NOTAM or any aerodrome certification decision. These rest with the aerodrome operator, the air navigation service provider and the competent regulator.
4. Standards, regulations and named sources. References to ICAO, FAA, EASA, DGCA, AAI, IEC, IEEE, ISO, BIS and other standards, regulations, AIP material and published sources, and statements about what a named airport, State or authority has published, are summaries for orientation as understood when the page was prepared. They are not official text, may be incomplete, amended or superseded, and have not been independently verified. Consult the current official editions, including the current AIP, AIRAC cycle and NOTAMs. Following this content does not guarantee compliance with any law, standard or approval, and official documents, regulations, the approved design and manufacturers’ instructions always prevail.
5. Generic content; no warranty. Values, tolerances, intervals, sequences, examples, checklists and pass/fail or “compliant” wording are generic and indicative; real installations differ in design, make, model, age and condition. Content is provided “as is” and “as available”, without warranty of any kind, express or implied, including accuracy, completeness, currency or fitness for a particular purpose.
6. Images, diagrams and credits. Photographs on this page carry a credit line in their caption naming the source and, where stated, the licence (for example U.S. Government public-domain works or openly licensed images). They illustrate a type of equipment or situation, may not show the exact item described, imply no endorsement by or affiliation with any person, organisation or manufacturer shown, and remain subject to their owners’ rights. Diagrams are original schematic illustrations, are not to scale and are not engineering drawings. To request a correction, credit or removal, write to the contact address below.
7. Limitation of liability. To the fullest extent permitted by applicable law, Precision AGL Academy and its owners, authors and contributors are not liable for any injury, death, loss, damage, downtime, penalty or regulatory consequence, whether direct or indirect, arising from the use of, reliance on, or inability to use this content. Nothing in this notice excludes or limits any liability that cannot lawfully be excluded or limited.
8. Independence and trademarks. This is an independent publication, not affiliated with or endorsed by ICAO, the FAA, EASA, the IEC, DGCA, AAI, any airport, regulator, employer or equipment manufacturer. Third-party names, standard designations and trademarks (including Megger®) belong to their respective owners and are used for identification only.
9. Copyright and use. © 2026 Precision AGL Academy. All rights reserved. The text, structure, diagrams and compilation of this page are protected by copyright. You may read it and use it for personal reference and internal training, keeping this notice attached; any other copying, republication, scraping or commercial use needs our prior written permission. Credited third-party photographs remain subject to their owners’ terms.
10. Corrections. Content is reviewed periodically, with no obligation to update. To report an error, safety concern, copyright, privacy or other rights issue, write to precisionaglsolutions@gmail.com.

Notice v1.0 · 20 October 2026 · Full terms, privacy and governing law: Legal & Disclaimer