Home › CFR › Title 8 › Part 2318 CFR Part 231 — Arrival and Departure Manifests§ 231.1— Electronic manifest and I-94 requirement for passengers and crew onboard arriving vessels and aircraft.§ 231.2— Electronic manifest and I-94 requirement for passengers and crew onboard departing vessels and aircraft.§ 231.3— Exemptions for private vessels and aircraft.