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
Broken
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

AFT PANEL 242XF LOWER SKIN IS BROKEN. (MARKED)<[01] IDENTIFIED FLOOR PANEL 242XF MATERIAL IAW SRM 53-00-50-0I-1 FIG 6; TABLE 6 AND BOING DWG 147A5810-11.<BR><BR>FOUND DAMAGE AT 2EA LOCATIONS ON LOWER SURFACE; BOTH AREAS ARE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARA 4F. <BR><BR>REPAIRS TO BE ACCOMPLISHED PER SRM 53-00-50-2R-1.<BR><BR>REMOVED DAMAGE AT BOTH LOCATIONS AND CLEANED AREAS; OK TO POT EXPOSED CORE IAW SRM 53-00-50-2R-1 PARA 3C-F;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1; APPLIED POTTING BMS5-28 TYPE 19 LOT#AK2LP8414K TO EXPOSED CORE AND CURED USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023 IAW SRM 53-00-50-2R-1 PARA 3G-H.;[05] SANDED POTTING SMOOTH WITH SURFACE; CLEANED REPAIR AREA AND FABRICATED REPAIR PLIES FROM BMS 9-3 TY H2 LOT#1522395-2 IAW SRM 53-00-50-2R-1.PARA 3. I.- K. (1) (A). INSTALLED REPAIR PLIES USING BMS8-201 LOT#1522301-1; VACUUM BAGGED; CHECKED FOR LEAKS; LEAK CHECKED GOOD USING VACUUM GAUGE ATS2441 CAL DUE DATE 08/2023 AND SET FOR CURE USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023. IAW SRM 53-00-50-2R-1 PARA 3K(1)-L(1)-M(1).;[08] INSPECTED AND VERIFIED CORRECTIVE ACTION 7.;[09] VERIFIED CURE WAS COMPLETE AND REMOVED PANEL FROM VACUUM BAG IAW SRM 53-00-50-2R-1 PARA 3. M. (1) TRIMMED EXCESS MATERIAL IAW SRM 53-00-50-2R-1 PARA 3.M(1).;[12] FINAL INSPECTION. JOB COMPLETE.

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