SDR SWAA2025030593938

Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date: February 6, 2025
Submitted: March 5, 2025
Operation: Air carrier
Aircraft: N278WN
Make and model: Boeing 7377H4
Aircraft serial: 36441
Aircraft time: 58,438 hours, 35,196 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Cracked
Location: Zone 200
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

(CUSTOMER REQUEST) MAIN CABIN; FLOOR STRUCTURE SUPPORT HAS CRACK AT STA 540; BL 0 TO RBL 24.75. 2025-94369<[01] REPLACED MAIN CABIN FLOOR STRUCTURE SUPPORT LOCATED AT STA540 BL 0 TO RBL 24.75 IAW B737-700 SRM 51-10-02 ITEM 9 AND DWG# 143A0060 SHEET 46 REV. - SEE INDIVIDUAL SIGN OFF BELOW;[02] REPLACED MAIN CABIN FLOOR STRUCTURE SUPPORT LOCATED AT STA540 BL 0 TO RBL 24.75 IAW B737-700 SRM 51-10-02 ITEM 9 AND DWG# 143A0060 SHEET 46 REV. - SEE INDIVIDUAL SIGN OFF BELOW

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