Airworthiness Directive · Amendment 39-14934 · Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 Airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP Airplanes
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 Airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP Airplanes
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.
The FAA is superseding an existing airworthiness directive (AD), which applies to all EMBRAER Model EMB-135 airplanes and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes. That AD currently requires repetitive inspections of the pitot static heating relay K0057 and corrective actions if necessary. That AD also requires doing a terminating modification, which ends the repetitive inspections. This new AD removes the existing repetitive inspections and instead requires a one-time detailed inspection for damage of the relay, relay socket, and silicone gasket; applicable corrective actions; and a new action to modify and re-identify the relay socket. This AD also revises the existing terminating modification--replacing/ rerouting the windowsill drain hoses--into two parts, each with a different, reduced compliance time. 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.
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 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.”
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.
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.
(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.
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.
