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TD TITLES AND NUMBERING
Change Entry Certification Record (CECR)

Aviation Maintenance Ratings - Aviation theories and other practices
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Urgent action TDs are issued under the governing factors of combat necessity or hazardous conditions that could result in injury to personnel, damage to valuable property, or unacceptable reductions in operational efficiency. These safety and material risks are acceptable only within definite time limits. When compliance is not accomplished within these time limits, urgent action TDs require that affected aircraft be grounded, and that the use of any missiles, munitions, equipments, or materials involved be discontinued. Routine action TDs are used to authorize, accomplish, or modify only. They are issued when conditions embody risks acceptable within broad time limits. If uncorrected, these conditions could constitute a hazard through prolonged use, have a negative effect on operational efficiency, reduce tactical or support utility, or reduce operational life or general service use of systems or equipment. Routine action is not assigned to bulletins. Record Purpose is used to confirm a modification that has been completely incorporated by the contractor or in-house activity in all accepted equipment (before issuance of the TD). This category is not used to formalize interim changes, assign message TDs, or to assign bulletins. Q46. Q37. Q38. Q49. Q50. Q51. Q52. Q53. What are the two methods of updating a technical directive? Define a rescission. How long should an activity maintain a TD on file? How are TDs cancelled? What activity assigns the numbers for changes and bulletins? When an uncorrected, unsafe condition exists that could result in serious injury to personnel or damage or destruction of property, what category of TD is issued? What category of technical directive is issued to complete an action that, if uncorrected, could constitute a hazard through prolonged use? What category of TD is used to confirm that a modification has been completely incorporated by the contractor or in-house activity in all accepted equipment? TECHNICAL PUBLICATIONS LIBRARY PROCEDURES LEARNING OBJECTIVE: Recognize the procedures followed by central and dispersed technical libraries. The aeronautical technical publications library (TPL) serves two important functions. First, it serves as a centralized source of up-to-date information for all mechanics and technicians. Second, it gives all personnel an excellent source of reference material to help with personal training and individual improvement. To do the job, the TPL contains copies of all technical manuals that apply to an activity’s assigned aircraft, its related systems and equipment, and the level of maintenance involved. Each aviation maintenance activity operates TPL services to support local operations and maintenance. A central TPL (CTPL), once established, controls technical publication activities within the command. This includes the setting up and operation of dispersed libraries. The QA division has overall management responsibility for the technical library. The paragraphs that follow discuss the functions of the central and dispersed libraries. CENTRAL TECHNICAL PUBLICATIONS LIBRARY (CTPL) When an activity needs more than one library, it sets up a CTPL. This CTPL manages the technical publications in the activity. The CTPL is responsible for determining the activity’s publication needs. The CTPL also procures and distributes publications and provides for the security, maintenance, and updating of all the technical publications. The CTPL is the activity’s point of contact with NATSF and Naval Aviation Supply Office (ASO). DISPERSED LIBRARY When an activity with a central library has other technical libraries within the command, these other libraries are called dispersed technical publications libraries (DTPL). The CTPL manages these dispersed libraries. The CTPL also provides initial outfitting and issues updated material to DTPLs. The CTPL holds the DTPLs responsible for the storage and availability of publications that it issues to them. If a DTPL needs additional information on a subject or technical 2-33







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