Service difficulty report · Floorboard · Boeing 7377H4

Difficulty date
September 25, 2023
Submitted
October 6, 2023
Operation
Air carrier
Aircraft
N253WN
Make and model
Boeing 7377H4
Aircraft serial
32511
Aircraft time
56,771 hours, 34,020 cycles
Part
Floorboard
Part number
UNKNOWN
Condition
Pulled
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

DOT 114-012. CABIN FLOORBOARD 241BF UPPER SURFACE HAS AREAS OF PULLED FIBERS.<[01] BONDTEST IAW B737 NDT PART 4; 51-00-05. NO DEFECTS NOTED. TOOL#40082; DUE 10OCT23<BR>UT IAW B737 NDT PART 4; 51-00-03. NO DEFECTS NOTED. TOOL#40084; DUE 01AUG24. REF STEP 2 OF EA 23-153-02916-WIP1;[02] EVALUATED PANEL 241BF AND FOUND AREA OF PULLED FIBERS AND DENTS ON UPPER SURFACE. FOUND TO BE REPAIRABLE. IAW B737-700 SRM 53-00-50-2R-1 PAR 1A. CLEAN AND PREP. IAW B737-700 SRM 53-00-50-2R-1 PAR 3 A;C;E&F. VERIFIED MATERIALS AS: BMS 5-28 (A201245); BMS 8-201 (A201552); BMS 9-3 (A190974). IAW B737-700 SRM 53-00-50-2R-1 TABLE 201. APPLIED POTTING COMPOUND. IAW B737-700 SRM 53-00-50-2R-1 PAR 3 H-J. NEED OK TO BOND.;[03] VERIFIED STEP 2;[04] OK TO BOND;[05] BONDED REPAIR. IAW B737-700 SRM 53-00-50-2R-1. PAR 3 K-M.;[06] REPAIRED UPPER SURFACE ON PANEL 241BF. IAW B737-700 SRM 53-00-50-2R-1; SRM 53-00-50-2R-0.;[07] REFER TO FAULT TTG8Q00NMDKV WHERE EA 23-153-02916 WAS ADDED AS A SUBTASK;[08] VERIFIED ITEM 5; 6 AND 7.<BR>TAP TEST GOOD REF NDT PART 1 51-01-01 REPAIR INSPECTION FLOWCHART FIGURE 9. AAR TOOL 35009;[09] AUDIT C/W

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