Liberty Aerospace Inc. XL-2 SAIB CE-10-16

This Special Airworthiness Information Bulletin (SAIB) alerts you, owners and operators of Liberty Aerospace, Inc. Model XL-2 airplanes, of an issue concerning the passenger/crew doors.
At this time, this airworthiness concern is not an unsafe condition that would warrant AD action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.

Background
There have been six occurrences of a door opening in-flight on Liberty XL-2 airplanes. In all six cases, the pilot has been able to land the airplane safely and there is evidence the door was not properly latched before takeoff.
The two passenger/crew entrance doors on the XL-2 are gull wing type doors with hinges on the top edge of the doors. If a door is not properly closed and latched prior to flight, the airflow during flight could cause the door to open. The open door could separate from the airplane and could cause damage to the airplane empennage or injure someone on the ground.

SAIB Attached