What was found
APU BLEED UNAVAILABLE AFTER PUSHBACK RTB. FOUND B-NUT ON PNEUMATIC SENSE LINE AT TOP OF APU COMPLETELY BACKED OFF OF THREADS. RETORQUED, MOTORED ENGS 30.1 N2. 40P DURING ROTATION. APU AIR CKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
APU BLEED UNAVAILABLE AFTER PUSHBACK RTB. FOUND B-NUT ON PNEUMATIC SENSE LINE AT TOP OF APU COMPLETELY BACKED OFF OF THREADS. RETORQUED, MOTORED ENGS 30.1 N2. 40P DURING ROTATION. APU AIR CKS GOOD.