SDR DALA2020010800120

Service difficulty report · Support Fitting · Boeing 757251

Difficulty date: January 6, 2020
Submitted: January 8, 2020
Operation: Air carrier
Aircraft: N557NW
Make and model: Boeing 757251
Aircraft serial: 33393
Aircraft time: 51,449 hours, 22,409 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Support Fitting
Condition: Corroded
Location: Fuselage
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

(AIRCRAFT 5657, L/P 1433937) CORROSION ON FLOOR SUPPORT FITTING OF LH AFT LAVATORY FROM STA 1640 LBL 44 AT CABIN FLOOR STRUCTURE (CORROSION TASK NO CP53-252-01 AMDS 2020-2440). CORRECTIVE ACTION: CORROSION LEVEL 2. REPLACED PER B757-200 SRM PER B757-200 SRM 51-40- 02-0G PAR 7.