# Butterfly Network receives FDA clearance for AI ultrasound fetal biometric tool revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Incident: [Butterfly Network receives FDA clearance for AI ultrasound fetal biometric tool](/incidents/regulatory-action-2026-03-30-butterfly-network.md)

_No events on file. Arc G is forward-only; the recorded event log accrues from Arc G adoption. For the current state of this incident, see the incident page._

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /incidents/regulatory-action-2026-03-30-butterfly-network/history. REST: /v1/incidents/25f63aab-17ed-453d-893b-d15a6142d0bc/history. HTML: [/incidents/regulatory-action-2026-03-30-butterfly-network/history](/incidents/regulatory-action-2026-03-30-butterfly-network/history)._