As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WIRES THAT CONNECT TO THE ALTERNATE AIR DOOR (WHICH ARE SOLDERED TO THE SWITCH) FOR THE TORNADO ALLEY TURBO SYSTEM ARE BECOMING FATIGUED AND SOLDER IS BREAKING AT SWITCH. IF THE ALTERNATE AIR WAS TO OPEN AND THESE WIRES WERE BROKEN, IT WOULD NOT GIVE THE PILOT AN INDICATION THAT THE ALTERNATE AIR DOOR WAS OPEN. (K)