As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO DSM FROM MCI, THE RT PROP WAS CYCLING IN/OUT OF FEATHER. DSM MAINTENANCE REPLACED THE RT LOW PRESSUER SWITCH. OPS CHECK NORMAL. THE FOLLOWING DAY, THE PROBLEM REOCCURED IN MCI WHERE THE PEDESTAL SWITCHES WERE ADJUSTED. OPS CHECK NORMAL. NO FURTHER INCIDENTS. (M)