- Difficulty date
- February 29, 2012
- Submitted
- March 6, 2012
- Operation
- Air carrier
- Make and model
- Boeing 7373H4
- Aircraft serial
- 27937
- Aircraft time
- 50,503 hours, 40,831 cycles
- Part
- Filter
- Part number
- 6454052
- Part serial
- 93398
- Condition
- Clogged
- Location
- Ac Bay
- Stage of operation
- DE
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY -- ON DESCENT APPROACHING FL 200 F/A REPORTS HAZY SMOKE ACRID "BURNING PLASTIC" SMELL. RECIRC FAN TURNED OFF AND QRH FOLLOWED. CABIN ALT RAISED, SMOKE BEGAN TO DISSIPATE, EMERGENCY DECLARED. CLOGGED HEPA FILTER. REMOVED AND REPLACED RECIRC & COALESCER BAGS.