Copyright & Content Sources

1. Our material

The lessons, questions, explanations, diagrams, audio, site design, software and the selection and arrangement of the library are ours, and are protected by copyright and related rights. The licence you get to use them is set out in section 9 of the Terms of Service: personal study, nothing more.

2. How the content is made

Every aircraft in the library is built from that aircraft's Pilot's Operating Handbook or Aircraft Flight Manual, chapter by chapter, in a process that is deliberately slow:

1. Facts are extracted from the manual — a limitation, a speed, a step, a system description — and each one is recorded with the document, edition, revision and page it came from.
2. Each fact is checked twice against the source before anything is written from it. Facts that cannot be verified are not used.
3. Lessons and questions are written in our own words, teaching what the fact means and how it is used, rather than reproducing the manual's text.
4. Diagrams are redrawn from scratch, from the values and labels in the source, as our own artwork. We do not scan, trace, crop or photograph pages.
5. Every published item carries its reference — publisher, document, edition and revision — so you can always go and check us against the real thing, which is what you should be doing anyway.
6. Whole aircraft are audited against the source before they are published, and errors found later are corrected for everyone.

We do not host, reproduce or distribute manuals, and no part of the service will give you one. Where a manual itself contains an error or contradicts itself, we say so and teach it as a known defect — we do not invent a resolution and we do not quietly correct the publisher.

3. Trade marks and affiliation

Aircraft names, type designations, manufacturer names and manual titles are the trade marks of their owners. We use them only to say which aircraft a lesson is about — nominative use, and nothing more.

4. What we never publish about an individual aircraft

A manual is a type document, but the physical copy someone consults belongs to a particular aircraft and a particular operator, and often carries per-airframe material — a completed weighing record, an equipment list, a hand-written annotation. We hold ourselves to three rules about that, enforced mechanically before anything is published:

• No registration marks. No aircraft registration ever appears in a lesson, a question, an explanation, an image, a caption, a diagram or any metadata.
• No airframe serials or work-order numbers — nothing traceable to one individual aircraft.
• No naming the operator, flight school or maintenance organisation whose copy of a manual was consulted. We cite the manual — publisher, document number, edition, revision, date — and nothing about whose copy it was.

Where a manual section is inherently per-airframe, we teach the structure of the record and say plainly that the actual values belong to one specific aircraft and must be read from that aircraft's own documents. We never teach one airframe's measured values as if they were type data. This protects operators' privacy, avoids implying that anyone's document has been reproduced, and — most importantly — keeps a student from ever mistaking one aeroplane's weighing record for their own.

5. If you believe we have infringed your rights

Tell us and we will act. Write to support@alphasierrapilot.com with the subject line "Copyright notice", and include:

• What work you say has been infringed, precisely enough for us to identify it — for a manual, the publisher, document number, edition and revision.
• Where the material is on our service: the page URL and, if you can, the lesson or question it appears in.
• Why you believe it infringes — quoting the specific passage, figure or element.
• Who you are: name, organisation, postal address, email and telephone.
• A statement that you are the rights holder or authorised to act for them, and that you believe in good faith that the use is not authorised.
• Your electronic or physical signature.

What we do. We acknowledge within 5 working days. Where a notice is complete and appears well-founded we remove or disable the material promptly while we assess it — we would rather take something down and be wrong than leave it up and be wrong. We then investigate against our own source records, tell you what we found, and either keep it down, restore it with an explanation, or rewrite it.

If material of yours was removed and you believe that was a mistake, write to the same address with the reasons and we will reconsider and reply. Please do not send a copyright notice about a factual error in a lesson — that is section 6, it reaches the right queue faster, and it gets fixed sooner.

Knowingly sending a false notice may make you liable for the resulting damages. Notices are handled by the operator personally; the postal address is in section 1 of the Terms of Service.

6. Reporting a content error (a different thing entirely)

If a fact, a speed, a limitation, a procedure or an answer key is wrong, use the report control on the lesson or question, or email us with the aircraft, the item, and what the manual actually says. Safety-relevant reports go to the front of the queue. This is the most useful thing anyone can do for the next student studying the same aircraft, and it costs you nothing.