Airworthiness Directive · Amendment 39-17952 · Fuselage
Empresa Brasileira de Aeronautica S.A. (Embraer)
This AD applies to Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135BJ airplanes, certificated in any category, as identified in Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013.
We are adopting a new airworthiness directive (AD) for certain Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135BJ airplanes. This AD was prompted by reports of failure of the bolts that connect the cockpit windshield center-post to the forward fuselage. This AD requires repetitive detailed inspections to detect discrepancies on the attaching parts of the cockpit windshield center- post; checking whether the bolts are tightened, if applicable; and modifying parts, including inspecting for and repairing damage. We are issuing this AD to prevent failed bolts and failed attaching parts of the cockpit windshield center-post, which could lead to loss of structural integrity of the airplane.
At the applicable time specified in paragraph (g)(1) or (g)(2) of this AD, do a detailed inspection to detect discrepancies on the attaching parts of the lower eyelet fitting of the cockpit windshield center-post and, if applicable, check whether the bolts are tightened, in accordance with Part I of the Accomplishment Instructions of Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013. If any discrepancy is found or if any bolt is not tightened, do the actions specified in paragraph (h) of this AD before further flight. Repeat the detailed inspection thereafter at intervals not to exceed 50 flight cycles until the modification required by paragraph (h) of this AD is done.
(1) For airplanes identified as Group 1 in Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013, on which the actions of Embraer Service Bulletin 145LEG-53-0021, has been done: Do the detailed inspection within 3,000 flight cycles after accomplishment of the actions of Embraer Service Bulletin 145LEG-53-0021, or within 50 flight cycles after the effective date of this AD, whichever occurs later.
(2) For airplanes identified as Group 2 airplanes in Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013: Do the detailed inspection before the accumulation of 3,000 total flight cycles, or within 50 flight cycles after the effective date of this AD, whichever occurs later.
Except as required by paragraph (g) of this AD, at the applicable time specified in paragraphs (h)(1) or (h)(2) of this AD, modify the attaching parts of the lower eyelet fitting of the cockpit windshield center-post, including a general visual inspection for any damage (cracks, dents, scratches) of the specified lower eyelet fitting, in accordance with Part II of the Accomplishment Instructions of Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013. If any damage is found during the general visual inspection, before further flight, repair using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or Agência Nacional de Aviação Civil (ANAC); or ANAC's authorized Designee. If approved by the ANAC Designee, the approval must include the Designee's authorized signature. Accomplishment of the modification terminates the repetitive inspections required by paragraph (g) of this AD.
(1) For airplanes identified as Group 1 in Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013, on which the actions specified in Embraer Service Bulletin 145LEG-53-0021, has been done: Do the modification before the accumulation of 3,000 flight cycles after doing the actions specified in Embraer Service Bulletin 145LEG-53-0021, or within 300 flight cycles after the effective date of this AD, whichever occurs later.
(2) For airplanes identified as Group 2 in Embraer Alert Service Bulletin 145LEG-53-A032, Revision 01, dated September 24, 2013: Do the modification before the accumulation of 3,000 total flight cycles, or within 300 flight cycles after the effective date of this AD, whichever occurs later.
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
Appliances and equipment
