The Transportation Security Administration (TSA) limits each passenger to a maximum of 3.4 ounces per container of gels, aerosol or liquids. The traveler must place the products in one clear zip-locked quart-size plastic bag. The TSA allows passengers to bring more than 3.4 ounces of baby food, baby formula or medications, if the passenger declares them at the security checkpoint.
According to the Code of Federal Regulations -- Title 2, Part 252 -- air travelers may not smoke on most commercial domestic flights or on U.S. carriers headed to an international destination.
Passengers may smoke on charter flights, but airline staff must designate no-smoking sections. If a non-smoking passenger meets boarding deadlines and desires to sit in a designated smoking section, the staff must accommodate the passenger and make the area non-smoking. The airline does not have an obligation to provide a smoking area.
The rules prohibit cigar and pipe smoking on all charter and commercial U.S. flights.
The Department of Transportation requires all U.S. airlines to provide information on filing complaints. The information must appear on ticket confirmations, on the airline's website and at the ticket counters and gates. A carrier has 30 days to significantly acknowledge receipt of a written complaint. It must respond within 60 days of getting a complaint. If an airline fails to resolve issues, the traveler may file grievances with the DOT's Aviation Consumer Protection Division.
Under Title 49 C.F.R., Part 1544.219, of the Code of Federal Regulations, a law enforcement officer may carry a weapon on an aircraft only if he meets certain conditions. These include working as a federal law enforcement officer or full-time as a local, county or state officer. He must have approval to carry a weapon in connection with his responsibilities and must complete the "Law Enforcement Officers Flying Armed" training. He must have a valid reason for needing access to the weapon on the plane, and must notify the airlione in advance.
Most airlines do not allow other passengers to carry firearms in carry-on luggage. They may carry it in checked luggage, but should consult the airline for instructions for packing firearms.
