From the MAMP-
2.5 Tool Checks
Tool checks are to be carried out iaw Chapter 4.13.1. The relevant individual holding authority level K is to determine the requirement for any additional tool checks. If deemed necessary the authority level K is to detail the scope, frequency and recording of such checks. The Issue Centre custodian is to maintain a record of these additional tool checks.
7.2.1 Authority Level K
The relevant individual holding authority level K is responsible for: 1 The overall engineering management of tool resources on their Stn/Ship/Unit. 2 Issuing local orders that amplify the provisions of this chapter and/or provide for local requirements. 3 Determining the requirement
5.
Tool Checks A 100% tool check is to be carried out at the start of a shift, at shift handover and at the end of the working day. The 100% tool check ensures that all in-use hand tools, tool kits, TKTs or ITTs, as appropriate, are complete and accounted for, and that any Unserviceable hand tools have been identified to the Issue Centre staff. If any hand tools have been identified as Unserviceable, a member of the Issue Centre staff is to carry out the non-routine removal procedure, iaw Paragraph 3.6. Additionally, checks of all hand tools in use on an Air Systems or item of Air System equipment is to be carried out as follows:
1 On completion of any task, when the hand tools are not being returned to the Issue Centre. 2 Before fitting any component that, once fitted, will restrict access. 3 Prior to subjecting the Air System to system checks, where the loss of a hand tool may present a hazard to the Air System or personnel. 4 At the discretion of the supervisor at convenient stages during protracted Maintenance activities. When a 100% tool check identifies that a hand tool is missing, the procedures detailed in Chapter 4.14 - Loose Articles - Precautions and Recovery Procedures are to be followed.
It's my opinion (and only and opinion) is that a systemic failure has occurred by not recognising the potential for lax practices at operator level. Para 7.2.1 Clearly states that additional checks can be built into the local regulations by the holder of Authority Level K and again, only an opinion, is that the Authority Level K holder should now be involved with reviewing local tool control practices.