Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 8, 2023
Submitted
May 17, 2023
Operation
Air carrier
Aircraft
N958WN
Make and model
Boeing 7377H4
Aircraft serial
36673
Aircraft time
38,993 hours, 23,664 cycles
Part
Floor Panel
Condition
Pulled
Location
Zn 200 Fus Top
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

FWD PANEL 221CF UPPER FACESHEET HAS MULTIPLE AREAS OF PULLED STRANDS.<[01] PART/MATERIAL IDENTIFIED PER SRM 53-00-50-0I-1 FIG 2 TABLE 2 SECTION 41<BR>UPPER SURFACE STRAND DAMAGE EXCEEDS THE ALLOWABLE DAMAGE LIMITS PER SRM 53-00-50-1A-1 PARA 4. B.<BR>REPAIR TO BE PERFORMED IAW SRM 53-00-50-2R-1 .;[02] PERFORMED DAMAGE REMOVAL & SURFACE PREPARATION IAW SRM 53-00-50-2R-1 PARA 4 STEPS A-F.;[03] UPDATED MEASUREMENTS;[04] VALIDATED REPAIR PER SRM 53-00-50-2R-1; USING BMS9-3 STYLE 1581 GLASS LOT 1522395-2 & BMS8-301/50A RESIN LOT 1523449-1 FABRICATED REPAIR PLIES IAW SRM 53-00-50-2R-1 PARA 3 STEPS K & J (1) OK TO LAY UP THE REPAIR.;LAID UP THE REPAIR VACUUM BAGGED THEN LEAK CHECKED IAW SRM 53-00-50-2R-1 PARA 3. L. STEPS (1) (A)-(C) CAL TOOL VACUUM GAGE ID E11543 CAL DUE 09/2023 & SET TO CURE; CURED REPAIR USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023; UNBAGGED; AND LIGHTLY SANDED THEN INSTALLED ALL THROUGH INSERTS USING BMS5-107 LOT#AK2KP8383K IAW SRM 53-00-50-2R-1 PARA 3M(1)-N NSERTS REMOVED IN CORRECTIVE ACTION LINE 5 WERE REPLACED & CURED IAW SRM 53-00-50-2R-0 PARA 5 S. TABLE 203-PAGE 2 REF CAL TOOL THERMOMETER ID ATS2208 CAL DUE 10/2023;[14] VERIFIED CORRECTIVE ACTIONS 11-13;[15] CABIN FLOOR PANEL 221CF UPPER FACE SHEET WAS REPAIRED IAW SRM 53-00-50-2R-1

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