From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On April 15, 2016 at about 15:45, N145HH operated by air methods corporation, was on approach to midstate medical center's helicopter pad in Meriden Connecticut when the pilot heard a loud bang. The aircraft landed without incident. After landing, it was determined that the right side hydraulic access door on the top of the cabin had opened in flight and contacted the rotor blades.
As the FAA filed it
ON APRIL 15, 2016 AT ABOUT 15:45, N145HH OPERATED BY AIR METHODS CORPORATION, WAS ON APPROACH TO MIDSTATE MEDICAL CENTER'S HELICOPTER PAD IN MERIDEN CONNECTICUT WHEN THE PILOT HEARD A LOUD BANG. THE AIRCRAFT LANDED WITHOUT INCIDENT. AFTER LANDING, IT WAS DETERMINED THAT THE RIGHT SIDE HYDRAULIC ACCESS DOOR ON THE TOP OF THE CABIN HAD OPENED IN FLIGHT AND CONTACTED THE ROTOR BLADES.