Airworthiness Directive · Amendment 39-16658 · Electrical power
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ 190 Airplanes
This AD applies to all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170-100 LR, -100 STD, -100 SE, and -100 SU airplanes; and Model ERJ 170-200 LR, -200 SU, and -200 STD airplanes; and 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.
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:
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 1,200 flight hours or 6 months after the effective date of this AD, whichever occurs first: Do a general visual inspection (GVI) to determine the RAT model, part number, and serial number, in accordance with Part 1 of the Accomplishment Instructions of EMBRAER Service Bulletin 170-24-0048, Revision 01, dated May 12, 2010; or EMBRAER Service Bulletin 190-24-0019, Revision 01, dated May 11, 2010; as applicable. A review of airplane maintenance records is acceptable in lieu of this inspection if the model, part number, and serial number of the RAT can be conclusively determined from that review.
Note 1: For the purpose of this AD, a GVI is: “A visual examination of an interior or exterior area, installation or assembly to detect obvious damage, failure or irregularity. This level of inspection is made from within touching distance, unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight or drop-light, and may require removal or opening of access panels or doors. Stands, ladders or platforms may be required to gain proximity to the area being checked.”
(1) For any RAT not having a serial number identified in EMBRAER Service Bulletin 170-24-0048, Revision 01, dated May 12, 2010; or EMBRAER Service Bulletin 190-24-0019, Revision 01, dated May 11, 2010: No further action is required by this paragraph.
(2) For any RAT having a serial number identified in EMBRAER Service Bulletin 170-24-0048, Revision 01, dated May 12, 2010; or EMBRAER Service Bulletin 190-24-0019, Revision 01, dated May 11, 2010: Within 1,200 flight hours or 6 months after the effective date of this AD, whichever occurs first, inspect to determine if the symbol “24-5” is marked on the RAT identification plate. A review of airplane maintenance records is acceptable in lieu of this inspection if the RAT identification plate can be conclusively determined to be marked with “24-5” from that review.
(i) If the symbol “24-5” is marked on the RAT identification plate: No further action is required by this paragraph.
(ii) If the symbol “24-5” is not marked on the RAT identification plate: Within 1,200 flight hours or 6 months after the effective date of this AD, whichever occurs first, replace the RAT balance screw(s) with a new balance screw(s), and mark the RAT identification plate with the symbol “24-5,” in accordance with Part 2 of the Accomplishment Instructions of EMBRAER Service Bulletin 170-24-0048, Revision 01, dated May 12, 2010; or EMBRAER Service Bulletin 190-24-0019, Revision 01, dated May 11, 2010; as applicable.
(h) As of the effective date of this AD, no person may install a RAT identified in Part 1 of the Accomplishment Instructions of EMBRAER Service Bulletin 170-24-0048, Revision 01, dated May 12, 2010; or EMBRAER Service Bulletin 190-24-0019, Revision 01, dated May 11, 2010; as applicable; on any airplane, unless that RAT is identified with the symbol “24-5” on the identification plate.
(i) Actions accomplished in accordance with EMBRAER Service Bulletin 190LIN-24-0006, dated July 27, 2010, for Model ERJ 190-100 ECJ airplanes, are considered acceptable for compliance with the corresponding actions specified in this AD.
Actions accomplished before the effective date of this AD in accordance with EMBRAER Service Bulletins 170-24-0048 or 190-24-0019, both dated March 31, 2010, as applicable, are considered acceptable for compliance with the corresponding actions specified in this AD.
Note 2: This AD differs from the MCAI and/or service information as follows: (1) The Brazilian ADs apply to “airplanes equipped with Hamilton Sundstrand ram air turbine (RAT), Model ERPS37T, Part Number (P/N) 1703781 Series; with the serial numbers (S/N) contained in Embraer Service Bulletin[s 170-24-0048 or 190-24-0019],” and their first action is an inspection to determine if affected equipment is installed. This AD applies to all of the airplanes, with the first action in the AD being an inspection to determine if affected equipment is installed, because the affected part could be rotated onto any of the airplanes listed in the applicability of this AD. (2) Although the MCAI states not to install the part identified in paragraph (h) of this AD after accomplishing the actions specified in paragraph (g)(2) of this AD, this AD prohibits installation of the part as of 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.
