On a 737, does the pilot get any cockpit indication that his Flap Load Relief is not working properly? Say for instance due to a Flap Lever Position Switch failure?
The cockpit indication would be that the flaps don't retract as expected. The subsequent flap overspeed would then be captured by the Flight Data Recorder, the same as any other exceedance. But I'm unaware of any specific indication on a cockpit display that indicates directly "the Flap Load Relief isn't working".