Alcoholic beverages

This regulation establishes three alcohol-related rules for Part 135 operations (commuter and on-demand air carriers):

First, passengers cannot bring and consume their own alcoholic beverages aboard the aircraft—they may only drink alcohol that the certificate holder (the airline/operator) serves them. This gives the operator control over alcohol consumption.

Second, the operator cannot serve alcohol to anyone who appears intoxicated. The key word is "appears"—the crew must use their judgment based on observable signs.

Third, the operator cannot allow anyone who appears intoxicated to board the aircraft in the first place.

These rules give flight crews clear authority to refuse service or boarding based on intoxication, which is critical for flight safety. An intoxicated passenger can pose risks ranging from interfering with crew duties to creating emergency situations. The regulation places responsibility on the certificate holder to monitor and control alcohol-related issues before and during flight.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*