Airworthiness Directive · Amendment 39-19413 · Stabilizers
328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier Luftfahrt GmbH) Airplanes
This AD applies to all 328 Support Services GmbH (Type Certificate previously held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier Luftfahrt GmbH) Model 328-100 and -300 airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all 328 Support Services GmbH Model 328-100 and -300 airplanes. This AD was prompted by reports indicating corrosion on the horizontal stabilizer bearing supports at the contact surface to the horizontal stabilizer rear spar. This AD requires inspections for corrosion and any other damage (i.e., cracking and chafing) of the horizontal stabilizer rear bearing supports, replacement of the affected horizontal stabilizer rear bearing supports if necessary, and modification of the horizontal stabilizer rear spar. We are issuing this AD to address the unsafe condition on these products.
(1) At the applicable time specified in paragraph (g)(3)(i) or (g)(3)(ii) of this AD, do a detailed visual inspection and an eddy current inspection for corrosion and any other damage (i.e., cracking and chafing) of the horizontal stabilizer rear bearing supports in accordance with the Accomplishment Instructions of 328 Support Services GmbH Service Bulletin SB-328-55-557, Revision 2, dated May 24, 2018 (for Model 328-100 airplanes); or 328 Support Services GmbH Service Bulletin SB-328J-55-324, Revision 2, dated May 24, 2018 (for Model 328-300 airplanes); as applicable.
(2) At the applicable time specified in paragraph (g)(3)(i) or (g)(3)(ii) of this AD, modify the horizontal stabilizer rear spar in accordance with the Accomplishment Instructions of 328 Support Services GmbH Service Bulletin SB-328-55-557, Revision 2, dated May 24, 2018 (for Model 328-100 airplanes); or 328 Support Services GmbH Service Bulletin SB-328J-55-324, Revision 2, dated May 24, 2018 (for Model 328-300 airplanes); as applicable.
(3) Do the actions in paragraphs (g)(1) and (g)(2) of this AD at the applicable compliance time specified in paragraph (g)(3)(i) or (g)(3)(ii) of this AD.
(i) For Group 1 airplanes, serial numbers (S/Ns) 1005 through 1031 inclusive, as identified in 328 Support Services GmbH Service Bulletin SB-328-55-557, Revision 2, dated May 24, 2018 (for Model 328-100 airplanes): Within 1,000 flight cycles or 8 months, whichever occurs first after the effective date of this AD.
(ii) For Group 2 airplanes, S/Ns 1032 through 3224 inclusive, as identified in 328 Support Services GmbH Service Bulletin SB-328-55-557, Revision 2, dated May 24, 2018 (for Model 328-100 airplanes); or 328 Support Services GmbH Service Bulletin SB-328J-55-324, Revision 2, dated May 24, 2018 (for Model 328-300 airplanes); as applicable: Within 5,000 flight hours or 30 months, whichever occurs first after the effective date of this AD.
If, during the inspections required by paragraph (g) of this AD, corrosion or any other damage (i.e., cracking and chafing) is detected, before further flight, replace the affected horizontal stabilizer rear bearing supports in accordance with the Accomplishment Instructions of 328 Support Services GmbH Service Bulletin SB-328-55-557, Revision 2, dated May 24, 2018 (for Model 328-100 airplanes); or 328 Support Services GmbH Service Bulletin SB-328J-55-324, Revision 2, dated May 24, 2018 (for Model 328-300 airplanes); as applicable.
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.
