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SDR CALA2017062601989

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Service difficulty report · Doubler · Boeing 757222

FAA SDR system

Difficulty date
June 26, 2017
Submitted
June 26, 2017
Operation
Air carrier
Aircraft
N502UA
Make and model
Boeing 757222
Aircraft serial
24623
Aircraft time
92,658 hours, 26,899 cycles
System (JASC)
5310 · Fuselage Main, Structure
Part
Doubler
Part number
146N36509
Condition
Corroded
Location
Lavatory Service
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

AFT LAVATORY SERVICE CONNECTOR, INTERNAL AREA WHERE THE TEE PLUMBING ATTACHES, HAS BLUE WATER STAINS AND SIGNS OF CORROSION. CLEANED THE AFT LAVATORY SERVICE CONNECTOR IAW EC/RA 2011-01000, REV U. CORROSION ON DOUBLER HAS 100% MATERIAL LOSS AROUND CUT OUT FOR PLUMBLING. REMOVED AND REPLACED THE DOUBLER IAW SRM 51-40-02, PAR 4, FIGS 3 & 8.