Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
August 21, 2022
Submitted
September 27, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
Floor Panel
Condition
Delaminated
Location
Fuselage
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

FLOOR PANEL 242UF HAS A DELAMINATED PREVIOUS REPAIR ON THE UPPER SURFACE FWD O/B CORNER / [01] IDENTIFIED PANEL 242UF MATERIAL IAW SRM 53-00-50-0I-1 FIGURE 6 TABLE 6<BR><BR>DAMAGE AREA EXCEEDS ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PAR.4 F<BR><BR>DAMAGE IS REPAIRABLE IAW SRM 53-00-50-2R-1 <BR><BR>REMOVED DAMAGED UPPER SURFACE PLIES ON PREVIOUS REPAIR LOCATED AT FWD O/B CORNER MEASURING 7'X4'; CLEANED WITH NO CONTAMINATION NOTED IAW SRM 53-00-50-2R-1 PAR.3 A-F;[02] CERTIFIED CORRECTIVE ACTION 1 AND VALIDATED REPAIR PER SRM 53-00-50-2R-1;[03] VERIFIED CORRECTIVE ACTION ITEM 1-2.;[04] FABRICATED REPAIR PLIES FROM BMS9-3 H2 ST1581 LOT#1493221-1 IAW SRM 53-00-50-2R-1 PAR.3 K(1)(A)<BR><BR>OK TO INSTALL;[05] VERIFIED CORRECTIVE ACTION 4<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>OK TO INSTALL REPAIR PLIES.;[06] INSTALLED REPAIR PLIES USING BMS8-201 TYIII LOT#AK2CP8139K; VACUUM BAGGED; LEAK CHECKED GOOD USING VACUUM GAUGE ID:ATS2441 DUE:08/2022 IAW SRM 53-00-50-2R-1 PAR.3 K(1)(B-C); L(1);[07] VERIFIED CORRECTIVE ACTION 6;[08] CURED REPAIR PLIES UNDER HEAT LAMP USING THERMOMETER ID:ATS2208 DUE:10/2022; UNBAGGED; AND TRIMMED EXCESS MATERIAL IAW SRM 53-00-50-2R-1 PAR.3 M(1);[09] VERIFIED CORRECTIVE ACTION 8;[10] VERIFIED CORRECTIVE ACTION 8

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