Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
May 7, 2025
Submitted
June 10, 2025
Operation
Air carrier
Aircraft
N900WN
Make and model
Boeing 7377H4
Aircraft serial
32544
Aircraft time
57,299 hours, 34,643 cycles
Part
Floorbeam
Condition
Corroded
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

CORROSION ON FLOORBEAM LOCATED BS 986.5 RBL 42 WL 208.1 AT AFT GALLEY AREA 2025-309272<[01] TOOL USED ON STEP 6 UT EQUIPMENT. P/N: 45MG; S/N: 232017609; CAL DUE DATE: 08-OCT-25;[02] EVALUATED FLOOR BEAM LOCATED BS 986.5 RBL 42 WL 208.1 AT AFT GALLEY AREA AND FOUND WITHIN LIMITS IAW B737-700 SRM 53-70-51-1A-1.ALLOWABLE DAMAGE 1 PARAGRAPH 4 STEP H. (2) (B) FIGURE 103 DETAIL N. E-E. SEE INDIVIDUAL SIGN OFF BELOW.;[03] COMPLETED TASK CERTIFIED;[04] CORRECTED STEP 2<BR>EVALUATED FLOOR BEAM LOCATED BS 986.5 RBL 42 WL 208.1 AT AFT GALLEY AREA AND FOUND OUT OFF LIMITS IAW B737-700 SRM 53-70-51-1A-1.ALLOWABLE DAMAGE 1 PARAGRAPH 4 STEP H. (2) (B) FIGURE 103 DETAIL N. G-G. SEE TTG8Q010BLZU FOR REPAIR ACTIONS. SEE INDIVIDUAL SIGN OFF BELOW.;[05] EVALUATED FLOOR BEAM LOCATED BS 986.5 RBL 42 WL 208.1 AT AFT GALLEY AREA AND FOUND OUT OFF LIMITS IAW B737-700 SRM 53-70-51-1A-1.ALLOWABLE DAMAGE 1 PARAGRAPH 4 STEP H. (2) (B) FIGURE 103 DETAIL N. G-G. SEE TTG8Q010BLZU FOR REPAIR ACTIONS. SEE INDIVIDUAL SIGN OFF BELOW.

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