2009-23-11: Ice and Rain Protection

2009-23-11 Empresa Brasileira de Aeronautica S.A. (EMBRAER): Amendment 39-16085; Docket No. FAA-2009-1039; Directorate Identifier 2009-CE-059-AD. \n\nEffective Date \n\n\t(a) This airworthiness directive (AD) becomes effective December 2, 2009. \n\nAffected ADs \n\n\t(b) None. \n\nApplicability \n\n\t(c) This AD applies to Model EMB-500 airplanes, all serial numbers, certificated in any category. \n\nSubject \n\n\t(d) Air Transport Association of America (ATA) Code 30: Ice and Rain Protection. \n\nReason \n\n\t(e) The mandatory continuing airworthiness information (MCAI) states: \n\n\t''It has been found the possibility of heating deactivation of Air Data System (ADS) sensors due to its inadequate automatic logic, when ADS/AOA knob is on AUTO position associated with the following messages: \n\n--DC BUS 1 OFF displayed on Crew Alerting System--CAS in conjunction with STBY HTR FAIL (which means loss of power on DC BUS 1); or \n--EMER BUS OFF displayed on CAS (which means loss of power on EMERGENCY BUS); or\n--ELEC EMERGENCY displayed on CAS (which means Electrical Emergency). \n\n\tThe loss of airplane air data sensors heating may cause ice buildup on their surfaces, which in turn may cause wrong pressure acquisitions resulting in erroneous flight parameters indication to the flight crew. Since this condition may occur in other airplanes of the same type and affects flight safety, an immediate corrective action is required. Thus, sufficient reason exists to request compliance with this AD in the indicated time limit.'' \n\n\tThis AD action requires inserting information into the Abnormal Procedures section of the FAA-approved airplane flight manual (AFM). \n\nActions and Compliance \n\n\t(f) Unless already done, before further flight, incorporate into the AFM the following procedures section revisions. You may insert a copy of this AD into the appropriate sections of the AFM to comply with the requirements of this AD. \n\t(1) Revise the AFM by replacing the ELECTRICAL EMERGENCY procedures in AFM section 4-08, Abnormal Procedures, pages 3 and 4, with Figure 1: \n\n\n\n\n\n\n\t(2) Revise the AFM by replacing the DC BUS 1 OFF procedure in AFM section 4-08, Abnormal Procedures, pages 6 and 7, with Figure 2: \n\n\n\n\n\t(3) Revise the AFM by replacing the EMERGENCY BUS OFF procedure in AFM section 4-08, Abnormal Procedures, page 9, with Figure 3: \n\n\n\n\nFAA AD Differences \n\n\tNote: This AD differs from the MCAI and/or service information as follows: No differences. \n\nOther FAA AD Provisions \n\n\t(g) The following provisions also apply to this AD: \n\t(1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to Attn: Karl Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4146; fax: (816) 329-4090. Before using any approved AMOCon any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. \n\t(2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. \n\t(3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et.seq.), the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120-0056. \n\nRelated Information \n\n\t(h) Refer to MCAI ANAC, AD No.: 2009-10-01R1, dated October 16, 2009, for related information.