Tamarack Resumes Installations of Atlas Active Winglets

The FAA and EASA have given the green light for affected Citations to resume service after the adoption of a service bulletin.

After filing for Chapter 11 bankruptcy in June in the wake of an emergency airworthiness directive issued by the FAA and EASA this past spring, Tamarack Aerospace Group says it is again installing its Atlas active winglets on Cessna Citations.

The move follows a decision by safety regulators in the U.S. and Europe to again allow jets with Tamarack active winglets to resume flying after a number of incidents prompted the grounding of those jets.

Tamarack’s active winglets came under scrutiny following a number of inflight upset incidents in which Citation pilots struggled to maintain control of the aircraft. The issue has since been resolved through a service bulletin, and the FAA and EASA have given the go-ahead for Atlas-equipped airplanes to resume flying.

The winglets promise to improve range, speed and fuel efficiency for the Citation-series jets at a low installed weight, the Sandpoint, Idaho, company says. To make the improvements without adding weight, Tamarack used active load-alleviation tabs (Tamarack Active Camber Surfaces or TACS) located on the wing outboard of the ailerons.

The Citation CJ1, CJ2, CJ3 and M2 can be equipped with the proprietary winglets.

The company said it has extended the warranty period of the winglets for affected customers.


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