SDR UALA2011092005094

Service difficulty report · Duct · Boeing 757222

Difficulty date: September 18, 2011
Submitted: October 13, 2011
Operation: Air carrier
Aircraft: N586UA
Make and model: Boeing 757222
Aircraft serial: 26710
Aircraft time: 60,357 hours, 21,409 cycles
Engine: Pwa PW2037
System (JASC): 2120 · Air Distribution System
Part: Duct
Condition: Dirty
Location: Cabin
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

ABSOLUTELY NO AIR FLOW FROM CEILING OVERHEAD DISTRIBUTION NOZZLE STARTING AT ROW 30. REFERENCE PREVIOUS HISTORY OF LITTLE TO NO AIRFLOW IN AFT CABIN. CLEANED AFT CABIN OVHD DISTRIBUTION DUCT AND ALL SIDEWALL VENT RISERS USING SIDEWALL DIFFUSER CLEANING TOOL. AIRFLOW TO AFT CABIN GOOD.