As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE LINE TO THE FLOW PACK FROM THE PNEUMOSTAT WAS CHAFED THROUGH 1/2 OF ITS DIAMETER DUE TO CONTACT WITH THE THROTTLE CABLE SHEATH. THE LINE ON THE OTHER PACK WAS ALSO CONTACTING THE SHEATH, BUT JUST SLIGHTLY. NO WEAR HAD TAKEN PLACE. THE LINE BEING WORN THROUGH WOULD AFFECT PRESSURIZATION AND TEMPERATURE CONTROL.