Airworthiness Directive · Amendment 39-17106 · Flight controls
Empresa Brasileria de Aeronáutica S.A. (EMBRAER) Airplanes
This AD applies to the following Empresa Brasileria de Aeronáutica S.A. (EMBRAER) Model EMB-505 airplanes certificated in any category.
(1) Group 1: Serial numbers (S/Ns) 50500030, 50500033 through 50500037, 50500039, 50500040, 50500044, and 50500046.
(2) Group 2: S/Ns 5050004 through 50500029, 50500031, 50500032, 50500038, 50500041 through 50500043, 50500045, 50500047 through 50500059, 50500061, 50500063, 50500065 through 50500068, 50500070, 50500074, and 50500075.
(3) Group 3: S/N 50500072.
(4) Group 4: S/Ns 50500069, 50500071, and 50500073.
We are adopting a new airworthiness directive (AD) for certain Empresa Brasileria de Aeron[aacute]utica S.A. (EMBRAER) Model EMB-505 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as an inadequate amount of drain holes in the primary control surfaces (rudder, elevator, and aileron) and their tab surfaces, which may allow water to accumulate in the control surfaces. This condition could cause unbalanced flight control surfaces and reduced flutter margins, which could result in loss of control of the airplane. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the following actions:
(1) Group 1 airplanes specified in paragraph (c)(1) of this AD:
(i) Within the next 100 hours time-in-service after August 6, 2012 (the effective date of this AD) or within the next 3 calendar months after August 6, 2012 (the effective date of this AD), whichever occurs first, visually inspect the right-hand (RH) and left-hand (LH) aileron lower skin for the existence of required drain holes.
(ii) Before further flight after the inspection required in paragraph (f)(1)(i) of this AD, if the required drain holes do not exist, drill the drain holes.
(iii) Within the next 24 months after August 6, 2012 (the effective date of this AD), rework the ailerons, aileron trim-tabs, aileron horn covers, rudder, rudder trim-tab, elevators, and elevator auto-tab surfaces by drilling additional drain holes.
(iv) Do the actions required in paragraphs (f)(1)(i) and (f)(1)(ii) of this AD following the Accomplishment Instructions in EMBRAER Phenom Service Bulletin No. 505-57-0003, dated November 16, 2011.
(v) Do the actions required in paragraph (f)(1)(iii) of this AD following Part I of the Accomplishment Instructions in EMBRAER Phenom Service Bulletin No. 505-57-0002, dated February 13, 2012.
(2) Group 2 airplanes specified in paragraph (c)(2) of this AD: Within the next 24 months after August 6, 2012 (the effective date of this AD), rework the ailerons, aileron trim-tabs, aileron horn covers, rudder, rudder trim-tab, elevators, and elevators auto-tab surfaces by drilling additional drain holes. Do the modifications following Part I of the Accomplishment Instructions in EMBRAER Phenom Service Bulletin No. 505-57-0002, dated February 13, 2012.
(3) Group 3 airplanes specified in paragraph (c)(3) of this AD:
(i) Within the next 24 months after August 6, 2012 (the effective date of this AD), rework the rudder, rudder trim-tab, elevators, and elevators auto-tab surfaces by drilling additional drain holes.
(ii) Within the next 24 months after August 6, 2012 (the effective date of this AD), inspect the ailerons for the existence of required drain holes.
(iii) Before further flight after the inspection required in paragraph (f)(3)(ii) of this AD, if the required drain holes do not exist, drill the drain holes.
(iv) Do the actions required in paragraph (f)(3)(i) of this AD following Part II of the Accomplishment Instructions in EMBRAER Phenom Service Bulletin No. 505-57-0002, dated February 13, 2012.
(v) Do the actions required in paragraphs (f)(3)(ii) and (f)(3)(iii) of this AD following Part II of the Accomplishment Instructions in EMBRAER Phenom Service Bulletin No. 505-57-0004, dated February 16, 2012.
(4) Group 4 airplanes specified in paragraph (c)(4) of this AD:
(i) Within the next 24 months after August 6, 2012 (the effective date of this AD), inspect the ailerons, elevators, and rudder for the existence of required drain holes.
(ii) Before further flight after the inspection required in paragraph (f)(4)(i) of this AD, if the required drain holes do not exist, drill the drain holes.
(iii) Do the actions required in paragraphs (f)(4)(i) and (f)(4)(ii) of this AD following Part I of the Accomplishment Instructions in EMBRAER Phenom Service Bulletin No. 505-57-0004, dated February 16, 2012.
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.
