18 CFR § 367.4020
Account 402, Maintenance expense
April 15, 2021
There must be shown under this caption the total amount included in the service company maintenance expense accounts 500 through 598 (§§367.5000 through 367.5890), 800 through 894 (§§367.8000 through 367.8810), and 935 (§367.9350).