M.A.401 Maintenance data

(a)  The person or organisation maintaining an aircraft shall have access to and use only applicable current maintenance data in the performance of maintenance including modifications and repairs.

(b)  For the purposes of this Part, applicable maintenance data is:

1. any applicable requirement, procedure, standard or information issued by the CAA,

2. any applicable airworthiness directive,

3.applicable instructions for continuing airworthiness, issued by type certificate holders, supplementary type certificate holders and any other organisation that publishes such data in accordance with Annex I (Part-21) to Regulation (EU) No 748/2012.

4. any applicable data issued in accordance with point 145.A.45(d).

(c)  The person or organisation maintaining an aircraft shall ensure that all applicable maintenance data is current and readily available for use when required. The person or organisation shall establish a work card or worksheet system to be used and shall either transcribe accurately the maintenance data onto such work cards or worksheets or make precise reference to the particular maintenance task or tasks contained in such maintenance data.