What was found
SMOKE DETECTOR IN CABIN WHEN RUNNING OFF OF APU BLEED INFLIGHT OR ON THE GROUND. REPLACED APU. PROBLEM FOUND TO BE AN INTERNAL SEAL FAILURE. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SMOKE DETECTOR IN CABIN WHEN RUNNING OFF OF APU BLEED INFLIGHT OR ON THE GROUND. REPLACED APU. PROBLEM FOUND TO BE AN INTERNAL SEAL FAILURE. (M)