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If, during any inspection required by paragraph (h)(1) of this AD, the coolant sample contains aluminum or fluoride that exceeds the acceptable range as specified in Table 1: Limit values for G48 coolant type or Table 2: Limit values for G40 coolant type, as applicable, in Appendix A: Material, Methods and Limits, of SB CG 125-1030 P1, Rev 4, before further flight, remove the cylinder head and replace it with a serviceable part, flush the engine cooling system, and refill the cooling system with