EASA SIB CE-11-50
Cirrus Design Corporation SR20, SR22 and SR22T Aeroplanes — Partial Asymmetric Flap and Flap Actuator Over-Extension
Summary
The Cirrus Design Corporation SR20, SR22 and SR22T Aeroplanes — Partial Asymmetric Flap and Flap Actuator Over-Extension is a Special Airworthiness Information Bulletin issued by the FAA to alert owners and installers about a flap actuator over-extension issue affecting Cirrus SR20, SR22, and SR22T aircraft. This bulletin highlights a potential flap actuator rod end bending and partial asymmetric flap condition that could occur due to a 0-percent proximity sensor failure. The bulletin provides information and recommendations but does not mandate regulatory action.
What Changed
This bulletin updates the original Service Bulletin SB 2X-27-16 with revision 1 (SB 2X-27-16 R1), which includes installing a collar on the flap actuator and replacing the actuator end fitting and rod end with a new design. These changes address flap actuator over-extension and prevent flap linkage disconnection and partial asymmetric flap conditions.
Why It Matters
This information is important for aviation professionals because flap asymmetry can lead to aggressive aircraft banking and increased pilot workload during critical phases of flight such as approach. Maintenance and inspection teams need to be aware of the flap actuator condition to ensure continued safe operation and prevent potential flap system failures on affected Cirrus aircraft.
What To Do
Owners, operators, and maintenance technicians are recommended to perform the actions described in Cirrus Service Bulletin SB 2X-27-16 R1 during the next scheduled maintenance, annual inspection, or within 12 months, whichever occurs first. Copies of the service bulletin can be obtained from Cirrus Design Corporation or their website.
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