As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE HOVERING AND IN A RT PEDAL TURN PREPARING FOR TAKE OFF A LOUD BANG WAS HEARD AND AIRCRAFT YAWED MOMENTARILY LT THEN RT. RETURNED TO MAINTENANCE PAD AND SHUT DOWN AND NOTIFIED MAINTENANCE. MAINTENANCE REMOVED BLEED VALVE PN 23005366A, SN FF43547 AND INSTALLED BLEED VALVE PN 23005366 SN FF43634, OPS CHECK WAS GOOD.