What was found
FLIGHT 5903 TOILET SMOKE CAUTION MESSAGE AND STRONG OILY SMELL WHEN BLEED SOURCE SWITCHED TO APU. REPLACED THE APU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 5903 TOILET SMOKE CAUTION MESSAGE AND STRONG OILY SMELL WHEN BLEED SOURCE SWITCHED TO APU. REPLACED THE APU.