SDR ASAA2018021823691

Service difficulty report · Drain · Boeing 737890

Difficulty date: February 18, 2018
Submitted: February 26, 2018
Operation: Air carrier
Aircraft: N528AS
Make and model: Boeing 737890
Aircraft serial: 35695
Aircraft time: 31,914 hours, 10,870 cycles
System (JASC): 4920 · APU Core Engine
Part: Drain
Condition: Dirty
Location: Apu
Stage of operation: TO
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

DIRTY SOCKS ODOR DURING TAKEOFF & LANDING. ACFT GROUNDED. PERFORMED CONDITIONAL INSPECTION IAW AMM 05-51-56, AND FIM 05-51, TASK 814. PERFORMED APU DRAIN MAST INSPECTION IAW AMM 49-16-11, FOUND THE MIDDLE DRAIN FOR THE LOAD COMPRESSOR SEAL TO BE WET. RAN BOTH ENGINES AND BOTH A/C PACKS, NO FURTHER OODRS DETECTED. APU EXHAUST AND TAILCONE INSPECTION NORMAL. REMOVED & REPLACED THE APU IAW AMM 49-11-00, & T/C 78349010. OPERATED PACKS, NO ODORS NOTED.