SDR 0300295642

Service difficulty report · Boeing 757251

Difficulty date: February 24, 2003
Submitted: February 26, 2003
Operation: Air carrier
Aircraft: N542US
Make and model: Boeing 757251
Aircraft serial: 26489
Aircraft time: 23,712 hours, 9,401 cycles
System (JASC): 4990 · APU Oil System
Component: Apu · Honeywell
Component part number: GTCP331200ER
Stage of operation: CL
Nature of condition: B
Precautionary procedure: A

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

What was found

During climb three lavatory smoke alarms sounded. Flight attendants reported strong electrical smell. Flight crew returned aircraft to departure airport. Maintenance found oil dripping from the left pack outlet duct. Oil in the packs is residual from APU removed previous day. Maintenance replaced numerous oil contaminated pac/air conditioning components and performed pack burnout procedure.