SDR QXEA2015062500347

Service difficulty report · Unknown · Bombdr DHC8401

Difficulty date: June 25, 2015
Submitted: June 30, 2015
Operation: Air carrier
Aircraft: N409QX
Make and model: Bombdr DHC8401
Aircraft serial: 4051
Aircraft time: 33,177 hours, 34,457 cycles
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Stage of operation: TX
How discovered: O
Nature of condition: B
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

APU BLEED AIR VERY STRONG ODOR WHEN IT IS ON. BLEED AIR PERFORMS GOOD. COMPLIED WITH TROUBLESHOOTING IAW NR 62172-01, ISSUE NR 2, STEP 3. RAN RECIRCULATION FAN AND APU FOR 20 MINUTES. NO ODOR DETECTED. CHANGED RECIRCULATING FAN FILTER AS PRECAUTION IAW AMM TASKS 21-22-22-0000-801 AND 400-801. RAN RECIRCULATING FAN ONLY AND THEN APU FOR 20 MINUTES. STILL NO ODOR DETECTED. NO OTHER DEFECTS FOUND. RETURNED TO SERVICE.