QUESTION: Is this travel wheelchair DOT approved? Or does it need to be approved to use it in an airline? ANSWER: The chair does not have DOT approval. Many customers used it for air travel and they never had any problem. It is designed for air traveling. For more discussions, options and details about the product, or to order the product, please click here This aircraft portable transport wheelchair can be folded and wrapped in a free nylon that comes with the transporter. It is convenient for traveling by air or other transportation. Shipping is free. This is the lightest and most portable travel wheelchair on the market. The aircraft folding transport wheelchair is built of aluminum Frame Work. The chair folds in seconds and can be carried on in the nylon bag that comes with it. Portable convenient for traveling (especially by air) and transportation. 5" front wheel. 8" rear wheel. Three sizes and two colors available. Optional seat cushions for increased comfort. Model: SL-8580S SL-8580J SL-8580A Seat Width: 15" 16" 18" Seat Height: 19" Seat Depth: 14.5" Armrest Height: 7.75" Seat Back Height: 17" Arm to Arm Width: 15.75" 16.5" 18.5" Overall Length: 31" (step rest open) Overall Length: 27.3" (step rest close) Overall Width: 24" 24.5" 27" Overall Height: 35.25" (open) Folded Height: 27" Folded Width: 24" 24.5" 27.2" Folded Thickness: 10.5" Unit Weight: 16 lbs. 17.5 lbs. 18 lbs. Weight Capacity: 200 lbs.