Service difficulty report · Coalescer Bag · Doug MD88

Difficulty date
September 24, 2026
Submitted
October 1, 2026
Operation
Air carrier
Aircraft
N835US
Make and model
Doug MD88
Aircraft serial
53172
Part
Coalescer Bag
Part number
21D101
Condition
Dirty
Location
Zone 100
Part time
977 hours, 504 cycles
Stage of operation
DE
How discovered
O
Nature of condition
B
Precautionary procedure
H

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

What was found

THE FLIGHT CREW REPORTED THAT ENGINE ANTI-ICE HAD BEEN USED SEVERAL TIMES DURING THE FLIGHT AND PREVIOUS FLIGHT. AS THE CREW GOT CLOSER TO THEIR DESTINATION ENGINE ANTI-ICE WAS TURNED ON & IT PRODUCED SIGNIFICANTLY MORE FUMES & ODOR THAN NORMAL. THE ENGINE ANTI-ICE WAS TURNED OFF AS ACFT EXITED ICING CONDITIONS. CAPTAIN BRIEFED THAT IF ENGINE ANTI-ICE WAS NEEDED AGAIN AND IF THE FUMES CAME BACK, THAT THE CREW WOULD DON OXYGEN MASKS. ANTI-ICE WAS NOT NEEDED FOR THE REMAINDER OF THE FLIGHT. AIRCRAFT LANDED WITH NO FURTHER ISSUES. MAINTENANCE IN KLRD FOUND THE RT WATER SEPARATOR COALESCER BAG TO BE DIRTY. MAINT R & R THE RT COALESCER BAG WITH A SERVICEABLE UNIT. MAINT CHKD THE AIR CYCLE MACHINE MAGNETIC PARTICLE PLUG AND FOUND NO EVIDENCE OF METAL. PERFORMED OPERATION CHECK OF THE CABIN RECIRCULATION FAN, ALL OPS AND LEAK CHECKS GOOD. NO DEFECTS NOTED. ALL WORK DONE IAW AMM 21-20-02, 21-20-12, AND 21-51-01.

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