ED 2010/002/R
AMC M.A.306 (a) Operators technical log system
For commercial air transport the operator’s aircraft technical log is a system for record-ing defects and malfunctions during the aircraft operation and for recording details of all maintenance carried out on an aircraft between scheduled base maintenance visits. In addition, it is used for recording flight safety and maintenance information the operating crew need to know.
Cabin or galley defects and malfunctions that affect the safe operation of the aircraft or the safety of its occupants are regarded as forming part of the aircraft log book where recorded by another means.
The operator’s aircraft technical log system may range from a simple single section docu-ment to a complex system containing many sections but in all cases it should include the information specified for the example used here which happens to use a 5 section docu-ment / computer system:
Section 1 should contain details of the registered name and address of the operator the aircraft type and the complete international registration marks of the aircraft.
Section 2 should contain details of when the next scheduled maintenance is due, includ-ing, if relevant any out of phase component changes due before the next maintenance check. In addition this section should contain the current certificate of release to service (CRS), for the complete aircraft, issued normally at the end of the last maintenance check.
NOTE: The flight crew do not need to receive such details if the next scheduled mainte-nance is controlled by other means acceptable to the competent authority.
Section 3 should contain details of all information considered necessary to ensure con-tinued flight safety. Such information includes:
i.  the aircraft type and registration mark,
ii.  the date and place of take-off and landing,
iii.  the times at which the aircraft took off and landed,
iv.  
the running total of flying hours, such that the hours to the next schedule mainte-nance can be determined. The flight crew does not need to receive such details if the next scheduled maintenance is controlled by other means acceptable to the compe-tent authority.

v.  
details of any failure, defect or malfunction to the aircraft affecting airworthiness or safe operation of the aircraft including emergency systems, and any failure, defect or malfunctions in the cabin or galleys that affect the safe operation of the aircraft or the safety of its occupants that are known to the commander. Provision should be made for the commander to date and sign such entries including, where appropriate, the nil defect state for continuity of the record. Provision should be made for a CRS following rectification of a defect or any deferred defect or maintenance check carried out. Such a certificate appearing on each page of this section should readily identify the defect(s) to which it relates or the particular maintenance check as appropriate.

It is acceptable to use an alternate abbreviated certificate of release to service con-sisting of the statement ‘Part-145 release to service’ instead of the full certification statement specified in AMC 145.A.50(b) paragraph 1. When the alternate abbreviated certificate of release to service is used, the introductory section of the technical log should include an example of the full certification statement from AMC 145.A.50(b) paragraph 1.
vi.  the quantity of fuel and oil uplifted and the quantity of fuel available in each tank, or combination of tanks, at the beginning and end of each flight; provision to show, in the same units of quantity, both the amount of fuel planned to be uplifted and the amount of fuel actually uplifted; provision for the time when ground de-icing and/ or anti-icing was started and the type of fluid applied, including mixture ratio fluid/ water.
vii. the pre-flight inspection signature.
　
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