Airworthiness Directive · Amendment 39-18627 · Standard practices/structures
Saab AB, Saab Aeronautics (Type Certificate Previously Held by Saab AB, Saab Aerosystems) Airplanes
This AD applies to Saab AB, Saab Aeronautics (Type Certificate previously held by Saab AB, Saab Aerosystems) Model SAAB 2000 airplanes, certificated in any category, all manufacturer serial numbers, excluding the airplanes specified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Those airplanes identified in Table 1 of Saab Service Bulletin 2000-51-002, Revision 01, dated May 23, 2014, on which an applicable “Related Statement” identified in Table 1 was accomplished.
(2) Those airplanes that either have retained the original paint or have been repainted by Saab AB, Saab Aeronautics.
We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This AD was prompted by a report that on some airplanes, during the paint removal process for repainting the airplane, the basic corrosion protection (anodizing and primer) coating was sanded down to bare metal on the aluminum skin panels, and the bare metal might not have been treated correctly for corrosion prevention. This AD requires an inspection of structural components of the airplane for any damaged protective coating; inspections of those areas for pitting corrosion, if necessary; a thickness measurement to determine if there is reduced skin thickness, if necessary; and repair, if necessary. We are issuing this AD to detect and correct damaged protective coatings. This condition could result in pitting corrosion damage; and reduced metal thickness, which could result in reduced static and fatigue strength of the airplane's structural parts.
(1) Within 2,000 flight hours or 12 months after the effective date of this AD, whichever occurs first: Do a detailed inspection of the airplane structural parts to detect damaged protective coating (e.g., bonding primer), in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-51-002, Revision 01, dated May 23, 2014. If any damaged protective coating is found, before further flight, do a detailed inspection of the airplane structural parts to detect pitting corrosion and, if no pitting corrosion is found, do a dye penetrant inspection of the airplane structural parts to detect pitting corrosion and a thickness measurement to determine if there is reduced skin thickness, as applicable, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-51-002, Revision 01, dated May 23, 2014.
(2) If, during any inspection required by paragraph (g)(1) of this AD, any damage (such as pitting corrosion or damaged primer) or reduced skin thickness is detected, as defined in Saab Service Bulletin 2000-51-002, Revision 01, dated May 23, 2014, before further flight, contact the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA); or Saab AB, Saab Aeronautics' EASA Design Organization Approval (DOA) for a repair method, and do the repair within the compliance time indicated in those instructions.
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.
Aircraft
