Resources
Airworthiness-directive compliance, explained.
Practical guides on AD applicability, CAMO transitions, records, and aircraft leasing — written for the teams that carry the regulatory risk.
Technical Handbook
Six working references for engineers and records staff
Airworthiness directives, maintenance programmes, Part-M and CAMO, technical records, lease transitions — plus a searchable 176-term glossary. Deeper than the guides below, and written for the people who do the work.
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Field guides
Why an Aircraft's Compliance History Follows Its Airframe — Not Its Tail Number
A registration mark is an event; the airframe is the identity. Why AD applicability and compliance history belong to the type certificate and MSN — and what changed in the free Aviagent AD lookup.
CAMO, lessors, airworthiness engineers · 2026-08-20Which Airworthiness Directives Apply to Your Aircraft — and How Applicability Is Really Decided
How airworthiness-directive applicability is actually decided — by type certificate, MSN, mod state and engine variant — and why an alert isn't an answer.
CAMO / operators · 2026-07-11What Is a Transition CAMO — and the AD-Status Review That Makes Handovers Clean
A transition CAMO takes over continuing-airworthiness management for a fleet. Here's the AD-status review that makes the handover clean — and the risk it removes.
Transition CAMO · 2026-07-11Superseded and Recurring ADs: Keeping a Fleet Current
How AD supersedure and revisions work, why a superseded AD still matters, and how recurring ADs keep coming due — so your fleet's AD list stays current and correct.
CAMO (practical) · 2026-07-11EASA vs FAA Airworthiness Directives: Comply-Once, Cross-References, and What Actually Applies
How EASA and FAA airworthiness directives relate — MCAI, comply-once, cross-references — and how to avoid double-counting or missing a cross-jurisdiction AD.
CAMO (mixed EASA/FAA fleets) · 2026-07-11Back-to-Birth Records: How Far Back Airworthiness Evidence Must Go
What 'back-to-birth' means for airworthiness records, which parts need full traceability (LLPs), and how gaps hurt value at transfer — plus how to keep the chain intact.
Records / documentation teams · 2026-07-11Building an Audit-Ready AD Evidence Chain for Your Next Authority Audit
What auditors expect from your AD compliance evidence — timestamped, traceable, per-decision — and how to build an evidence chain from AD to sign-off you can defend.
CAMO managers / Accountable Managers · 2026-07-11AD Deadlines Explained: Flight Hours, Cycles, and Calendar Limits
How airworthiness-directive deadlines work — one-time vs recurring, flight-hours vs cycles vs calendar — and how to compute the next due point per aircraft without surprises.
CAMO (practical) · 2026-07-11AD Compliance at Aircraft Redelivery: The Lessor's Checklist
A practical AD-compliance checklist for aircraft redelivery and lease return — applicable ADs per tail, evidence, open items, and a clean airworthiness position at transfer.
Lessors, asset managers, redelivery teams · 2026-07-11