E-PROPS: TBO

E-Props propellers feature an unlimited service life, similar to traditional wooden propellers. Their TBO varies depending on the model, to adapt to different uses and operational requirements.

TBO = Time Between Overhaul. This is the maximum time an aircraft engine or propeller can be used between two overhauls, or before the first one.

The BELISANDRE and CLARENT ranges do not yet have a declared TBO at this stage.

Propellers not EASA certified

A major inspection is recommended, but not mandatory (the owner is responsible for the maintenance of their aircraft). This overhaul can be carried out by an E-PROPS-approved workshop, following an E-PROPS procedure.

EASA certified propellers

See the list of EASA certified propellers here: E-PROPS certified. A major inspection is mandatory and must be carried out by the manufacturer.

E-PROPS propellers have a very high TBO compared with many competing propellers. When purchasing a propeller, the TBO should be carefully considered: some propellers have a TBO of only 150 hours (for example, propellers with aluminum or steel hubs). Dismantling a propeller and sending it to the manufacturer for inspection grounds the aircraft for a more or less lengthy period, and can be expensive.