Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain EXTRA Flugzeugbau GmbH (EXTRA) Models EA-300, EA-300L, and EA-300S airplanes. The proposed AD would require (for all affected airplanes) an inspection of the upper longeron at the horizontal stabilizer attachment for cracks using a fluorescent dye check penetrant method, repair of any cracks found, and modification of the horizontal stabilizer. The proposed AD would require a limit on operation to the Normal category until accomplishment of the initial inspection and modification on airplanes with less than 200 hours time-in-service (TIS). The proposed AD is the result of reports of fatigue cracks at the horizontal stabilizer attachment on the affected airplanes. The actions specified by the proposed AD are intended to detect and correct cracks in the horizontal stabilizer attachment, which could result in structural failure of the aft fuselage with consequent loss of control of theairplane.