AD 2007-04-03 Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 Airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP Airplanes

Models named: EMB-135BJ, -135ER, -135KE, -135KL, -135LR, EMB-145, -145ER, -145MR, -145LR, -145XR. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all EMBRAER Model EMB-135BJ, -135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes; certificated in any category.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection and Modification of Relay/Relay Socket, and Corrective Actions (f) Within 600 flight hours or 180 days after the effective date of this AD, whichever occurs first: Do a one-time detailed inspection for discrepancies of the pitot static heating relay K0057, relay socket XK0057, and silicone gasket; modify and re-identify the XK0057 relay socket; and do all applicable corrective actions; in accordance with the Accomplishment Instructions of EMBRAER Alert Service Bulletin 145LEG-30-A017, dated May 31, 2006 (for Model EMB-135BJ airplanes); or EMBRAER Alert Service Bulletin 145-30-A050, dated May 31, 2006 (for Model EMB-135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes); as applicable; except where the service bulletins specify to contact the manufacturer if damage to components for the relay support is found, this AD does not require that action. All applicable corrective actions must be done before further flight. Note 1: For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.” Replacement and Modification of Right-Hand Windowsill Drain Hoses (g) Within 600 flight hours or 180 days after the effective date of this AD, whichever occurs first, do the actions required by paragraphs (g)(1), (g)(2), and (g)(3) of this AD, as applicable, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 145LEG-30-0011, Revision 01, dated June 7, 2006 (for Model EMB-135BJ airplanes); or EMBRAER Service Bulletin 145-30-0041, Revision 01, dated June 5, 2006 (for Model EMB-135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes); as applicable. (1) For all airplanes: Modify and re-identify the drain hose having part number (P/N) 123-15435-405, in accordance with Figure 1 of the applicable service bulletin. (2) For all airplanes: Replace the right-hand windowsill drain hoses having P/N 123-15435-403 with new, improved hoses, P/N 145-13047-001 and 145-13044-005; and replace the tiedown straps with new tiedown straps, in accordance with Figure 1 of the applicable service bulletin. (3) For Model EMB-135BJ airplanes: Reroute the drain hoses of the right cockpit horizontal linings, in accordance with Figure 2 of the applicable service bulletin. Replacement of Left-Hand Windowsill Drain Hoses (h) Within 1,200 flight hours or 360 days after the effective date of this AD, whichever occurs first, do the actions required by paragraphs (h)(1) and (h)(2) of this AD, as applicable, in accordance with the Accomplishment Instructions of EMBRAER Service Bulletin 145LEG-30-0011, Revision 01, dated June 7, 2006 (for Model EMB-135BJ airplanes); or EMBRAER Service Bulletin 145-30-0041, Revision 01, dated June 5, 2006 (for Model EMB-135ER, -135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes); as applicable. (1) For all airplanes: Replace the left-hand windowsill drain hoses having P/N 123-15435-401 and -403 with new, improved hoses having P/N 145-13044-001 and P/N 145-13047-001, and replace the tiedown straps with new tiedown straps, in accordance with Figure 1 of the applicable service bulletin. (2) For Model EMB-135BJ airplanes: Reroute the drain hoses of the left cockpit horizontal linings, in accordance with Figure 2 of the applicable service bulletin. Actions Accomplished According to Previous Issue of Service Bulletin (i) Any replacement/rerouting of the drain hoses accomplished before the effective date of this AD in accordance with EMBRAER Service Bulletin 145-30-0041 or 145LEG-30-0011, both dated April 20, 2005, as applicable, is considered acceptable for compliance with the requirements of paragraphs (g) and (h) this AD. Alternative Methods of Compliance (AMOCs) (j)(1) The Manager, ANM-116, International Branch, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (k) Brazilian airworthiness directive 2005-08-04R1, effective July 27, 2006, also addresses the subject of this AD. Material Incorporated by Reference (l) You must use the applicable EMBRAER service bulletins specified in Table 1 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Empresa Brasileira de Aeronautica S.A. (EMBRAER), P.O. Box 343—CEP 12.225, Sao Jose dos Campos—SP, Brazil, for a copy of this service information. You may review copies at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html . Table 1.—Material Incorporated by Reference EMBRAER— Revision level— Date— Alert Service Bulletin 145-30-A050 Original May 31, 2006. Alert Service Bulletin 145LEG-30-A017 Original May 31, 2006. Service Bulletin 145-30-0041 01 June 5, 2006. Service Bulletin 145LEG-30-0011 01 June 7, 2006. Issued in Renton, Washington, on February 5, 2007. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E7-2413 Filed 2-13-07; 8:45 am] BILLING CODE 4910-13-P

This AD results from a report of smoke in the cockpit. We are issuing this AD to prevent ignition of a windowsill drain hose by an overheated relay, which could cause fire and smoke in the cockpit.