Safety
FAA Adopts AD on Tamarack Winglet Components
Directive mandates compliance with an April 2023 service bulletin
Tamarack
The FAA is requiring installation of placards and airplane flight manual changes for Cessna Citation CJ family jets equipped with Tamarack Aerospace winglets.

The FAA this week adopted a previously proposed airworthiness directive (AD) ordering the installation of placards and airplane flight manual changes for Cessna Citation CJ family jets equipped with Tamarack Aerospace active technology load alleviation system (Atlas) winglets. This directive was prompted by a report of the potential for a failure of certain system components in which a loss of load alleviation would be unannunciated.

Tamarack’s Atlas modifies CitationJet/CJ1, CJ2, and CJ3-series models with winglets and the Tamarack active camber surfaces (TACS), which actuate during flight to reduce the increased load on the wings caused by the winglets. Approximately 200 aircraft—about 10% of the eligible CitationJet/CJ fleet—have Tamarack winglets installed, according to the company.