Flight-control PBIT

Startup setting
Check the realistic-startup option. [209] [91]
It affects documented test timing.
The FSS FLTCTRL page refers to a realistic-startup option for skipping PBIT. Check the available Aircraft settings and actual test behaviour in your installed build.
Electrical PBIT
FSS describes an automatic electrical test after AC power is applied; its documented duration is about three minutes.
Hydraulic PBIT
FSS describes an automatic ground test when all three hydraulic systems are pressurised. It documents about one minute for the test.
Control movement
FSS says moving a flight-control surface can interrupt the hydraulic test. Check the indication before conducting the full controls check.
Temperature and build
FSS says hydraulic PBIT is not performed below 10 °C hydraulic-reservoir temperature. Check test behaviour in the installed build.
The FSS FLTCTRL page calls the setting “realistic startup”. The EFB Settings page instead lists “Enable Complete Startup Procedures” for IRS timing and does not explicitly connect it to PBIT. The pages do not establish that the two labels mean the same setting.
If FLT CTRL BIT EXPIRED appears, a September 2026 FSS Discord discussion reports that selecting hydraulic pumps ON restarts the test and clears the message; an FSS staff reply says that reset behaviour is intended. The thread does not specify the exact switches or build. Treat this as troubleshooting context, not a universal normal flow. Check the FLTCTRL timer and follow the FSS checklist. FSS discussion, 17 September 2026 [212].