Airworthiness Directive · Amendment 39-16286 · Wings
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and Model ERJ 190 Airplanes
This AD applies to the airplanes certificated in any category, identified in paragraphs (c)(1) and (c)(2) of the AD.
(1) EMBRAER Model ERJ 170-100 LR, -100 STD, -100 SE, -100 SU, -200 LR, -200 STD, and -200 SU airplanes, equipped with outboard slat skew sensor part number (P/N) 1702286A or 1702288A.
(2) EMBRAER Model ERJ 190-100 ECJ, -100 LR, -100 IGW, -100 STD, -200 STD, -200 LR, and -200 IGW airplanes, equipped with outboard slat skew sensor P/N 1702286A or 1702288A.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated 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:
Unless already done, do the following actions.
(1) At the applicable compliance time in paragraph (f)(1)(i) or (f)(1)(ii) of this AD: Perform an operational test (OPT) of any outboard slat skew sensor having P/N 1702286A or P/N 1702288A. If any outboard slat skew sensor fails the test, replace the sensor with a serviceable sensor before further flight. Do the actions using a method approved by either the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the Agência Nacional de Aviação Civil (ANAC) (or its delegated agent).
(i) For Model ERJ 170 airplanes: Within 1,320 flight hours after the effective date of this AD.
(ii) For Model ERJ 190 airplanes: Within 1,320 flight hours or 12 months after the effective date of this AD, whichever occurs first.
Note 1: Guidance on performing the OPT required by paragraph (f)(1) of this AD can be found in Task 27-83-01-710-801-A, “Outboard Slat Skew Sensor—Operational Test,” dated October 28, 2008, of the Embraer 170/175 or 190 Aircraft Maintenance Manual (AMM).
Note 2: For the purpose of this AD, an OPT is “A task to determine if an item is fulfilling its intended purpose. Since it is a failure-finding task, it does not require quantitative tolerances.”
Note 3: For the purpose of this AD, a serviceable sensor is one that has passed the OPT required by paragraph (f)(1) of this AD.
(2) Repeat the OPT required by paragraph (f)(1) of this AD thereafter at intervals not to exceed 1,320 flight hours.
Note 4: This AD differs from the MCAI and/or service information as follows: No differences.
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.
