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To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed. D. Airworthiness Directives (AD): The FAA issues ADs to owners of affected airplane model types, engines, propellers, or appliances such as instruments. An AD is a mandatory action to correct an unsafe condition. The required actions are usually modifications, one-time inspections, repetitive inspections, or a combination. Owners should compare ADs for their airplane model type with their logbook entries to ensure that the ADs have been done. You can access the AD database at the following FAA website: http://www.faa.gov/ or by clicking the following hotlink: Airworthiness Directives. E. Special Airworthiness Information Bulletins (SAIB): The FAA issues SAIBs to owners of affected airplane model types, engines, propellers, or appliances such as instruments. An SAIB is not mandatory but provides information regarding an airworthiness concern that is less serious than an unsafe condition addressed with an AD. SAIBs often reference manufacturer service bulletins and service letters. You can access the SAIB database at the following FAA website: http://av-info.faa.gov/ or by clicking the following hotlink: Special Airworthiness Information Bulletins (SAIB). F. Service Bulletins/Letters: Aircraft manufacturers issue service bulletins and service letters to address in-service issues or as a method of product improvement. These are often instructions for accomplishing the mandatory actions of an AD. You can obtain service bulletins and service letters from the manufacturer and often from a model’s type club. G. Service Difficulty Reports (SDR): The FAA’s database of SDRs contains reported maintenance and/or service problems for any aircraft, engine, or component. An airplane owner can search this database for model specific or individual airplane reports. This can be helpful for identifying areas that may be candidates for special attention (especially if the logbooks are incomplete). This can be useful for determining any past difficulties for specific airplanes. SDRs are available from the FAA Aviation Systems Data Branch (AFS-620), Box 25082, Oklahoma City, OK 73169. You can access the SDR database at the following FAA website: http://afs600.faa.gov or by clicking the following hotlink: SDR Info. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：Best Practices Guide for Maintaining Aging General Aviation Airplanes(6) |
