US Department of Transportation     Transport of Micro Fuel Cells on Passenger Aircraft     Published      United States Organization Department of Transportation Pipeline and Hazardous Materials Safety Administration Identification Code of Federal Regulations 49 CFR Parts 171, 173 and 175 Scope On April 30, 2008 the US Department of Transportation Pipeline and Hazardous Materials Safety Administration agency published their final rule to revise 49 CFR 171, 173 and 175. This allows fuel cartridges for fuel cell devices and fuel cell systems to be transported on board passenger aircraft in carry-on baggage and used in flight. The types of fuel cell fuels permitted include: methanol, formic acid, butane, and specific borohydride formulations that comply with requirements of IEC/PAS 62282-6-1. The DOT action harmonized worldwide regulations, allowing all airlines passengers to take advantage of these new power systems.