AD NUMBER: 2006-21-03
MANUFACTURER: Cirrus
SUBJECT: Airworthiness Directive 2006-21-03
SUMMARY: The FAA adopts a new airworthiness directive (AD) for certain Cirrus Design Corporation (CDC) Models SR20 and SR22 airplanes. This AD requires you to check the maintenance records to determine whether the brake caliper piston O-ring seals were replaced at the last annual or 100-hour inspection. If the O-rings were not replaced, this AD requires you to replace the O-ring seals with new seals or replace brake calipers. This AD also requires you to modify the main landing gear wheel fairings to add temperature indicator sticker inspection holes, trim the wheel fairings toprevent them from holding fluids, install temperature indicator stickers on the brake calipers, andinsert Revision A6 (with revised preflight walk-around, a limitation on the engine speed used to taxi, and brake inspection/servicing intervals) into the Pilot's Operating Handbook (POH). This ADresults from several reports of airplanes experiencing brake fires and two airplanes losingdirectional control. We are issuing this AD to detect, correct, and prevent overheating damage tothe brake caliper piston O-ring seals, which could result in leakage of brake hydraulic fluid.Consequently, this could lead to the loss of braking with loss of airplane directional control orbrake fire.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/