Service difficulty report · O-Ring · Boeing 7374B7

Difficulty date
August 30, 2011
Submitted
September 1, 2011
Operation
Air carrier
Aircraft
N438US
Make and model
Boeing 7374B7
Aircraft serial
24560
Aircraft time
57,361 hours, 38,254 cycles
Part
O-Ring
Condition
Leaking
Location
Acm
Stage of operation
TO
How discovered
O
Nature of condition
K, B
Precautionary procedure
K

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

What was found

FLIGHT ATTENDANT'S REPORTED A "DIRTY SOCK" SMELL IN CABIN ON TAKEOFF AND LANDING. DID NOT NOTICE SMELL IN COCKPIT. MAINTENANCE PERFORMED CABIN ODOR J/C 03L00021001 AND BLEED AIR ANALYSIS J/C 03L00036001. FOUND OIL FROM AIR CYCLE MACHINE IN RIGHT PACK BAY. FOUND OIL LOW SERVICING PORT LEAKING. REPLACED O-RING. ACCOMPLISHED PACK BURN OUT. NO SMELL NOTED.

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