Manual wheelchairs are accepted without restrictions. They are stored in the aircraft hold‚ separate from other luggage‚ and secured with specialized tie-down straps.
Bluebird Airways does not accept wheelchairs powered by spillable wet-cell batteries under any circumstances.
These are accepted only if the battery contains no free liquid‚ advance notice has been provided‚ and explicit prior approval for transport has been received.
In-flight Guidelines
Lithium-ion batteries are considered "Dangerous Goods". They are accepted only if they pass UN 38.3 safety tests and receive explicit prior approval.
In-flight Guidelines
Wh = V × Ah or Wh = V × (mAh / 1000)
Example: A battery with 48V and 5.2Ah equals 249.6Wh. This battery meets the requirements and is permitted for transport.