Airworthiness Directive · Amendment 39-17467 · Landing gear
Embraer S.A. Airplanes
This AD applies to Embraer S.A. Model ERJ 190-100 STD, -100 LR, -100 ECJ, and -100 IGW airplanes; and Model ERJ 190-200 STD, -200 LR, and -200 IGW airplanes; certificated in any category; as identified in the service information specified in paragraphs (c)(1) and (c)(2) of this AD.
(1) EMBRAER Service Bulletin 190-57-0036, Revision 02, dated August 12, 2011.
(2) EMBRAER Service Bulletin 190LIN-57-0016, dated June 10, 2011.
We are adopting a new airworthiness directive (AD) for certain Embraer S.A. Model ERJ 190 airplanes. This AD was prompted by reports of cracks on the side stay of the main landing gear (MLG). This AD requires repetitive measurements of the left-hand (LH) and right-hand (RH) MLG side stay support fitting to detect bushing migration, and eventual replacement of the bushing; and a detailed inspection for damage on the LH and RH MLG side stay support assembly, and related investigative and corrective actions if necessary. We are issuing this AD to prevent excessive bearing friction, which might compromise the MLG free fall extension and cause fatigue cracking on the MLG side stay and on its support assembly, resulting in reduced structural integrity of the MLG.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 100 flight cycles after the effective date of this AD: Measure the left-hand (LH) and right-hand (RH) MLG side stay support fitting to detect bushing migration, in accordance with Part I of the Accomplishment Instructions of EMBRAER Service Bulletin 190-57-0036, Revision 02, dated August 12, 2011 (for Model ERJ 190-100 STD, -100 LR, and -100 IGW airplanes; and Model ERJ 190-200 STD, -200 LR, and -200 IGW airplanes); or EMBRAER Service Bulletin 190LIN-57-0016, dated June 10, 2011 (for Model ERJ 190-100 ECJ airplanes).
(1) If the distance of bushing migration is less than 5 millimeters (mm), repeat the measurement required by paragraph (g) of this AD thereafter at intervals not to exceed 100 flight cycles until the actions required by paragraph (h) of this AD are accomplished.
(2) If the distance of bushing migration is equal to or more than 5 mm, before further flight, do the actions required by paragraph (h) of this AD.
Within 1,200 flight cycles after the effective date of this AD, except as specified by the compliance time in paragraph (g)(2) of this AD: Replace the LH and RH MLG side stay support fitting bushing, in accordance with Part II and Part III, respectively, of the Accomplishment Instructions of EMBRAER Service Bulletin 190-57-0036, Revision 02, dated August 12, 2011 (for Model ERJ 190-100 STD, -100 LR, and -100 IGW airplanes; and Model ERJ 190-200 STD, -200 LR, and -200 IGW airplanes); or EMBRAER Service Bulletin 190LIN-57-0016, dated June 10, 2011 (for Model ERJ 190-100 ECJ airplanes). Replacing the bushings terminates the repetitive measurements required by paragraph (g)(1) of this AD.
At the applicable time specified in paragraph (i)(1), (i)(2), or (i)(3) of this AD: Perform a detailed inspection for damage on the LH and RH MLG side stay support assembly, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 190-32-0043, Revision 02, dated August 23, 2011 (for Model ERJ 190-100 STD, -100 LR, and -100 IGW airplanes; and Model ERJ 190-200 STD, -200 LR, and -200 IGW airplanes); or EMBRAER Service Bulletin 190LIN-32-0017, dated June 10, 2011 (for Model ERJ 190-100 ECJ airplanes). Do all applicable related investigative and corrective actions before further flight.
(1) For airplanes on which the actions specified in Part II and Part III of EMBRAER Service Bulletin 190-57-0036, or EMBRAER Service Bulletin 190LIN-57-0016, as applicable, have been done as of the effective date of this AD: Within 100 flight cycles after the effective date of this AD.
(2) For airplanes on which the actions specified in EMBRAER Service Bulletin 190-57-0036, or EMBRAER Service Bulletin 190LIN-57-0016, as applicable, have not been done as of the effective date of this AD; except for airplanes identified in paragraph (i)(3) of this AD: Within 1,200 flight cycles after the effective date of this AD.
(3) For airplanes on which the actions specified in EMBRAER Service Bulletin 190-32-0043, dated March 1, 2011, have been done as the effective date of this AD, and a repair of the MLG side stay support assembly was done if damage was found: Within 600 flight cycles after the effective date of this AD.
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.
