CFR › Title 14 › Part 29 › §29.102114 CFR §29.1021Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkA drain (or drains) must be provided to allow safe drainage of the oil system. Each drain must—(a)Be accessible; and(b)Have manual or automatic means for positive locking in the closed position.