§145.21 Tools & Equipment Requirements
The maintenance organization shall determine the tools and equipment necessary for the maintenance work according to the approved scope of work as specified in the CAAC MOC and the relevant airworthiness data, and fulfill the following requirements to effectively control and keep the tools and equipment to ensure that the tools and equipment are in good and serviceable conditions:
(1)  
The maintenance organization shall keep sufficient tools and equipment to ensure that the relevant maintenance work could be resumed in a reasonable short-term period in the case of failure of the tools and equipment which are used for maintenance work at that time.

(2)  
The maintenance organization may use alternative tools and equipment that the function is equivalent to that of the tools and equipment required or

recommended in the relevant airworthiness data. It is prohibited to use such tools and equipment for maintenance work unless the equivalency of such tools and equipment has been demonstrated and such tools and equipment have been approved or accepted by the CAAC Headquarter Office or the CAAC RA.

(3)  
The maintenance organization may borrow or lease certain special equipment that is rarely used or requires large investment, but the maintenance organization shall provide the CAAC Headquarter Office or the CAAC RA with the valid proof of tenancy, and show the CAAC Headquarter Office or the CAAC RA its ability to control the availability & serviceability of such equipment.

(4)  
The maintenance organization shall set up the identification marks and roster for each special tools & equipment, establish an effective control over these tools and equipment to avoid the abnormal failure and loss, and to ensure the tools and equipment necessary for the maintenance work remain in serviceable condition.

(5)  
The maintenance organization shall establish a system to calibrate the measuring tools or testing equipment. The calibration of the general measuring tool shall be traceable to the applicable national standards. Where there is no national standard available or the standard required by the manufacturer is stricter than the national standard, the calibration of such equipment shall be traceable to the standard of the manufacturer. Detailed records shall be set for the calibration of tools and equipment; such records shall also be controlled and managed as part of maintenance records. The calibration of tools and equipment can be contracted out but the administration and control responsibility for the calibration remains with the maintenance organization. The maintenance organization shall establish the following management requirements to prevent the maintenance personnel from using tools & equipment that are expired from the calibration due date for the maintenance work:

i.  Retrieving the tools & equipments called for calibration.
ii.  Affixing the calibration label on the prominent position on tools & equipment and requiring the maintenance personnel to verify whether tools & equipment are expired from the calibration due date prior to use.
iii.  Segregating the tools & equipments that are expired from the calibration due date, or affixing secure warning labels to the tools & equipment that could not be segregated.

(6)  
The requirements prescribed in the various articles of the aforementioned sections apply equally to the personal tools if used.

(7)  
In the case that the automatic test equipment is used for maintenance, the validity of the testing software shall be controlled.

§145.22 Materials Requirements
The maintenance organization shall fulfill following requirements to keep the material necessary for the intended maintenance work, have effective control and management over it to ensure its conformity:
　
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本文鏈接地址：CCAR Part 145- Civil Aircraft Maintenance Organization Certi(10)