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.
| Range & model | Blades | TBO (hours) |
|---|---|---|
| DURANDAL | 2 | 4,000 |
| 3 | 4,000 | |
| 4 | 4,000 | |
| 5 | 4,000 | |
| EXCALIBUR | 2 | 4,000 |
| 3 | 4,000 | |
| 4 | 4,000 | |
| 5 | 4,000 | |
| ASCALON | 2 | 2,500 |
| 3 | 2,500 | |
| VORPALINE | 3 | 2,000 |
| GLORIEUSE | 3 | 2,000 |
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.
