Following reports of cracked wing spar caps in several Cessna 210s in Australia and Canada, the FAA on Monday issued an emergency Airworthiness Directive requiring 3,665 of the airplanes in the U.S. to be inspected. If cracks are found in the spar cap, wing spar, or wing, they must be reported to the FAA, and the aircraft must be grounded until the affected parts are replaced or modified. The AD is effective on June 5. Cessna issued a service letter (PDF) addressing the issue last month.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/faa-issues-emergency-ad-for-cessna-210s