The fleet, on a chart.

Every type-certified aircraft model with FAA registry coverage, plotted on configurable axes. Pick the metrics — registered tails, NTSB events, applicable ADs, or per-tail rates derived from those — and the outliers reveal themselves. Bubble size scales with registered fleet so the dominant types stay visually anchored even when the axis is per-tail.

Type scatter

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Bubble size = √registered fleet · click any bubble for the type page

Method.

Registered tails

FAA Aircraft Registry — N-number count per (make, model) match. Inactive / cancelled tails are excluded; rebuilt nightly. Heavy-tailed distribution: Cessna 172 has 1,800+ registered, the long tail has fewer than 5.

NTSB events

NTSB CAROL events tagged to the (make, model) by the agency itself, joined to our type slug. Not a fleet rate — for that, divide by registered.

ADs applicable

FAA Airworthiness Directives whose applicability statement names this type. A model with 50 ADs isn't necessarily unsafe — it might just be a thoroughly-investigated venerable type.

Per-tail rates

Events ÷ registered and ADs ÷ registered, computed at render time. The min-registered filter (default 5) suppresses noise from one-of-a-kind types where a single event would inflate the rate to absurd values.

Caveat: this isn't a safety ranking. Events are reported to the NTSB but fleet hours, mission profile, and pilot population vary wildly between types. Per-tail rates are the honest first-pass — but a Pitts S-2 at 1.0 events/tail in aerobatic operations isn't directly comparable to a Cessna 152 at 0.05 in primary training. Use this to spot outliers and drill in, not to rank.