As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU OIL CONSUMPTION IS EXCESSIVE. [SUP 4-20-07] APU WAS REMOVED FROM AIRCRAFT FOR HIGH OIL CONSUMPTION. OIL CONSUMPTION WAS INVESTIGATED AND CONFIRMED IN THE TEST CELL. THE LRU OIL PUMP WAS REPLACED AND ALL HOC WAS GONE. WITH PROPER TROUBLESHOOTING, THIS APU COULD HAVE BEEN REPAIRED WITH THE APU STILL IN THE AIRCRAFT. THE REMOVAL OF THIS APU WAS UNNECESSARY. THE OIL PUMP IS A LINE REPLACEABLE UNIT.