The FAA Inspectors use order 8900.1 and it is available at FSIMS.FAA.GOV. The section that specifically refers to 141 chief and assistant chief check rides is Vol.5, Ch12, Sec1.
As previously stated, I would get very used to reading and referring to the 8900.1 for information concerning 141 schools and airman certification as everything that the FAA Inspectors do is covered in this document. Forewarned is forearmed!