Airworthiness Directive · Amendment 39-17953 · Stabilizers
Embraer S.A. Airplanes
This AD applies to Embraer S.A. Model EMB-500 airplanes, serial numbers 50000218 through 50000333, 50000336, 50000337, 50000339, and 50000341, certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Embraer S.A. Model EMB-500 airplanes. This AD was sent previously to all known U.S. owners and operators of these airplanes as an emergency AD. This AD requires an inspection and replacement as necessary of the barrel nuts at the horizontal stabilizer to vertical stabilizer attachment joint. This AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as cracking of the barrel nuts at the horizontal stabilizer to vertical stabilizer attachment joint. We are issuing this AD to correct the unsafe condition on these products.
Before further flight after the effective date of this AD, inspect all of the barrel self-locking nuts at the horizontal stabilizer to vertical stabilizer joint following the ACCOMPLISHMENT INSTRUCTIONS in Embraer S.A. Phenom Alert Service Bulletin No. 500-55-A004, Revision 02, dated July 25, 2014.
If, during the inspection required in paragraph (g) of this AD, any of the barrel nuts are found to be part number (P/N) NAS577B7A, before further flight, replace the applicable barrel nuts with new barrel nut P/N RMLH2577-070 following the ACCOMPLISHMENT INSTRUCTIONS in Embraer S.A. Phenom Alert Service Bulletin No. 500-55-A004, Revision 02, dated July 25, 2014.
Within 10 days after the inspection required in paragraph (g) of this AD, send the inspection results to Embraer using the “Service Bulletin Implementation and Evaluation Form” available on the Internet in the FLYEmbraer portal at: www.flyembraer.com.
This AD provides credit for the actions required in paragraphs (g), (h) and (i) of this AD, if those actions were performed before the effective date of this AD, using Embraer S.A. Phenom Alert Service Bulletin No. 500-55-A004, Revision 01, dated July 24, 2014, or Embraer S.A. Phenom Alert Service Bulletin No. 500-55-A004, Basic Revision, dated July 21, 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.
Aircraft
