Service difficulty report · Pneumatic System · Boeing 737924ER

Difficulty date
August 16, 2025
Submitted
August 18, 2025
Operation
Air carrier
Aircraft
N69830
Make and model
Boeing 737924ER
Aircraft serial
44560
Aircraft time
35,459 hours, 13,034 cycles
Part
Pneumatic System
Condition
Contaminated
Location
Zone 100
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

FUMES OR SMOKE IN CABIN PNEUMATIC POWER SUPPLIED BY ENGINE ENGIN E 1 STRONG SMELL OF OIL IN COCKPIT NOT IN CABIN ON TAKEOFF. MASTER C AUTION FLASHED FOR 1 SECOND. SPOKE WITH CREW ON ARRIVAL AND THEY CONFIRMED SMELL WS PRESENT DURING TAKEOFF AND DISSIPATED QUICKLY AFTERWARDS. MASTER CAUTION FLICKERED AND WENT OFF AS WELL. PERFORMED PSEU BITE AND NO DISCREPENCIES NOTED. . REVIEWED MAINTENANCE PERFORMED ON AIRCRAFT DURING OVERNIGHT VISIT AT TPA AND FOUND THAT AN ENGINE COMPRESSOR WASH WAS DONE. SUSPECT RESIDUAL FLUID CONTAMINATED PNEUMATICS AND BURNED OFF DURING FLIGHT. CREW CONFIRMED THAT NO OTHER PECULIAR ODORS WERE PREEENT THROUGHOUT FLIGHT. SMOKE/ ODOR FORM COMPLETED...