Aborted T/O due to no airspeed indication
So this might not belong here, but as it relates to an "instrument", this is where I posted. Yesterday a club member aborted his take-off run in our 150G when the airspeed indicator failed to indicate anything. He advised tower (controlled airport, Class D) and exited the runway and taxied back to our tie-down. His previous pre-flight didn't see any issues with the pitot tube (it has a new cover), but we have had some heavy rains since the last flight and high humidity.
After re-inspecting the pitot tube for blockage, they (rated PPL and a CFI for training) tried again and all went well. Here's the issue. As told to me by the FSDO, the tower had to report the aborted take-off to the FSDO because it occurred on a controlled runway, and now the FSDO is requesting that we have some type of inspection documented in our logbook that the pitot / airspeed indicator system is airworthy. He even asked me to email him a photo of the entry. I'm not entirely sure of the reasoning behind it, but my understanding it's something along the lines of the PIC made a determination the aircraft is not airworthy due to the failed indication, but as an owner / operator we do not have the ability to later deem it airworthy. He stated if we could find something in the POH or Service manual for us to refer to as preventative maintenance which resolved the issue, then we could use that. Otherwise an A&P entry.
I'm hoping that simply documenting the pre-flight inspection in the POH would suffice. Appreciate any thoughts you might have.