SDR SWAA2023060143201

Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date: April 29, 2023
Submitted: June 1, 2023
Operation: Air carrier
Aircraft: N226WN
Make and model: Boeing 7377H4
Aircraft serial: 32494
Aircraft time: 58,497 hours, 35,066 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Corroded
Location: Zn 100 Fus Lower
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

CORROSION WEB - INTERCOSTAL FLOOR STRUCTURE LOCATED BETWEEN BS294.5 TO BS312; WL208.1 AND LBL11 FWD GALLEY AND LAV 2023-295271<[01] REPLACED WEB-INTERCOSTAL LOCATED BETWEEN BS294.5 TO BS312; WL208.1 AND LBL11 FWD GALLEY AND LAV. IAW B737-700 SRM: 51-10-02 AND DWG: 141A5600 SHEET 2 REV. N. SEE INDIVIDUAL SING-OFF BELLOW.;[02] REPLACED WEB-INTERCOSTAL LOCATED BETWEEN BS294.5 TO BS312; WL208.1 AND LBL11 FWD GALLEY AND LAV. IAW B737-700 SRM: 51-10-02 AND DWG: 141A5600 SHEET 2 REV. N. SEE INDIVIDUAL SING-OFF BELLOW. AS RII

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