What was found
PDX - WHILE ON THE GROUND AFTER ENGINE SHUTDOWN WITH APU ON, NOTICED ACRID SMELL IN CABIN. REMOVED AND REPLACED APU. LEAK AND OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - WHILE ON THE GROUND AFTER ENGINE SHUTDOWN WITH APU ON, NOTICED ACRID SMELL IN CABIN. REMOVED AND REPLACED APU. LEAK AND OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.