01
Coverage check
Enter a registration and confirm there is enough observed history to support a report, at no cost.
About · evidence, calculations and limitations
Thin evidence is flagged rather than disguised.
Calculated values are labelled separately from directly observed movements. Every inference carries the observations, assumptions, confidence and limitations that support it.
The Aircraft Ledger
Operating-history intelligence for private aircraft, built from observed activity rather than the listing sheet.
Source · ADS-B position broadcasts
Refresh · Daily
Scope · One tail, one report
What we do
A plain-language record of how a specific tail has actually been flown.
We read directly from ADS‑B position broadcasts — the same signal air traffic control uses to see an aircraft — and resolve it into routes, sectors, utilisation, and the change in operating pattern over time.
Our flagship product, TailCheck, produces a single-aircraft operating report for buyers, brokers and technical teams running pre-purchase diligence. It complements a technical records review and pre-purchase inspection — it does not replace them.
02
Report generation
The observed track is resolved into flights, sectors and patterns, then checked against the wider fleet.
03
Delivery
A web report with findings, confidence statements, evidence gaps and the records worth requesting next.
The method
Eight steps, applied identically to every aircraft.
No analyst sits between the evidence and the report
01
Aircraft identity matching
Current and previous registrations are linked to an airframe or serial number only where the match is defensible. Unresolved changes remain visible.
02
Movement deduplication
Duplicate observations are reconciled before routes and activity are calculated.
03
Route reconstruction
Origins and destinations are assembled from detected movement evidence; incomplete sectors are not silently completed.
04
Utilisation estimation
Movement density and sector duration support estimated utilisation. Observations are not converted into verified technical hours or cycles.
05
Tracking-gap detection
Periods with materially weaker evidence are marked and carried into confidence and limitations.
06
Finding generation
A finding retains its observations, calculation or inference type, confidence, limitations and recommended follow-up.
07
Manual review
No analyst or manual review sits between the evidence and the report. Every finding is generated by this methodology, consistently, for every aircraft.
08
Report updates
Movement data is refreshed daily. A report reflects the evidence available as of its generation date, shown in the report header — it is not retroactively updated.
Where the line sits
What a TailCheck can and cannot tell you.
Every report states its evidence gaps and confidence level explicitly, and points to the questions worth asking a seller or their maintenance provider before you proceed.
It can establish
- Observed activity and operating geography
- Estimated utilisation and fleet-relative patterns
- Changes in operating rhythm over time
- Evidence gaps and the records worth requesting
It cannot establish
- Mechanical condition, maintenance quality or airworthiness
- Verified hours, cycles or complete undisclosed activity
- Structural condition, payload or mission purpose
- The cause of an observed ground period
Important boundary
An observed movement is not a verified technical cycle.
TailCheck cannot establish mechanical condition, maintenance quality, structural condition or airworthiness without the relevant technical records and inspection.
Questions about a report, a bundle, or something we’ve found — contact us and we’ll come back to you.
Operated by Magic Lagoon Ltd · 71–75 Shelton Street, Covent Garden, London, WC2H 9JQ