SDR AALA202507177332

Service difficulty report · Sill Drain · Boeing 737823

Difficulty date: July 16, 2025
Submitted: July 17, 2025
Operation: Air carrier
Aircraft: N339PL
Make and model: Boeing 737823
Aircraft serial: 33346
Aircraft time: 23,583 hours, 10,308 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Sill Drain
Condition: Odor
Location: Zone 200
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

AIRCRAFT WAS GROUNDED: AFTER LANDING FLIGHT ATTENDANTS IN THE AFT CABIN REPORTED A STINKY DIRTY DIAPER OR SULPHUR LIKE SMELL UPON LANDING AND SAID NOTICED IT SLIGHTLY DURING TAKEOFF AS WELL. SWITCHED AIRFLOW FROM ENGINE BLEEDS TO APU BLEED AND REMAINED UNTIL WE ARRIVED AT THE GATE, THEN DISAPPEARED. FOUND SMELL COMING FROM AFT GALLEY DOOR DRAINS. CLEANED DRAINS SMELL IS GONE. PER AMM 20-00-00.