Airworthiness Directive · Amendment 39-18630 · Doors
Airbus Defense and Space S.A. (Formerly Known as Construcciones Aeronauticas, S.A.) Airplanes
This AD applies to Airbus Defense and Space S.A. (formerly known as Construcciones Aeronauticas, S.A.) Model CN-235, CN 235-200, and CN 235-300 airplanes, certificated in any category, all manufacturer serial numbers.
We are adopting a new airworthiness directive (AD) for all Airbus Defense and Space S.A. Model CN-235, CN-235-200, and CN-235-300 airplanes. This AD was prompted by reports of main landing gear (MLG) access doors detaching from the airplane as a result of excessive vibration and metal fatigue in the attach fittings. This AD requires modification of the MLG access door by replacing seals in the MLG fairing and, for certain airplanes, adding an additional bolt. We are issuing this AD to prevent a fracture in the MLG access door associated with excessive vibration and metal fatigue in the attach fittings. This condition could lead to MLG access door detachment and consequent impact of flight controls, resulting in reduced control of an airplane.
(1) For all airplanes: Within 12 months after the effective date of this AD, modify each MLG access door by installing an improved fairing seal, in accordance with the Accomplishment Instructions of EADS CASA Service Bulletin SB-235-52-0068, Revision 2, dated January 9, 2015.
(2) For all Model CN-235-200 airplanes: Concurrently with the action required in paragraph (g)(1) of this AD, modify each affected MLG access door by installing an additional bolt, in accordance with the Accomplishment Instructions of EADS CASA Service Bulletin SB-235-52-0061, Revision 1, dated October 24, 2014.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
