SDR SWAA2022030904349

Service difficulty report · Fuel Cell · Boeing 73776N

Difficulty date: May 7, 2019
Submitted: March 9, 2022
Operation: Air carrier
Aircraft: N7818L
Make and model: Boeing 73776N
Aircraft serial: 28609
Aircraft time: 58,323 hours, 34,449 cycles
System (JASC): 5730 · Wing, Plate/Skin
Part: Fuel Cell
Condition: Corroded
Location: Lt Wing
Stage of operation: IN
How discovered: 9
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

LEFT WING FUEL PANEL 532KB HAS CORROSION AROUND INNER LIP OF PANEL - MARKED / EVALUATED CORROSION AROUND INNER LIP OF LH WING FUEL 532KB. CORROSION DAMAGE OUTSIDE OF SRM REPAIR LIMITS. UNABLE TO ENSURE WIDTH AND WILL REMAIN FLAT TO WITHIN 0.005' IAW B737 SRM 57-20-01-2R-1 FIGURE 203 SHEET 1 CIRCLE NOTE A. ORDERED AND RECEIVED SERVICABLE PANEL FOR LEFT WING FUEL PANEL 532KB IAW B737 SRM 51-10-02-0G-0 STEP 9A AND IPC 28-11-11-02. ATAG#FY1462

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