Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 22, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
38,285 hours, 23,370 cycles
Part
Floor Panel
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

FLOOR PANEL 222DF UPPER SKIN HAS AN AREA OF PULLED STRANDS. (MARKED)<[01] IDENTIFIED FLOOR PANEL 222DF IAW SRM 53-00-50-0I-1 FIG 2 TABLE 2 AND BOEING DWG 141A5810-749.<BR><BR>DAMAGE TO UPPER SURFACE SKIN PLIES IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARA 4B.<BR><BR>REPAIR TO BE ACCOMPLISHED PER SRM 53-00-50-2R-1.<BR><BR>REMOVED 26 THROUGH INSERTS TO FACILITATE REPAIR IAW SRM 53-00-50-2R-1 PARA 3B.<BR><BR>REMOVED DAMAGE TO UPPER SURFACE SKIN AND CLEANED AREA THEN FABRICATED REPAIR PLIES FROM BMS9-3H2ST1581 LOT#1522395-2; OK TO INSTALL IAW SRM 53-00-50-2R-1 PARA 3A-F AND PARA 3K(1).;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[03] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1 AND 2.;[04] INSTALLED REPAIR PLIES USING BMS8-201 TYPE 4 LOT#1524651-1; VACUUM BAGGED; CHECKED FOR LEAKS; LEAK CHECKED GOOD USING VACUUM GAUGE ATS2441 CAL DUE DATE 08/2023 IAW SRM 53-00-50-2R-1 PARA 3K(1)-L(1).;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[06] CURED REPAIR USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023 THEN REMOVED VACUUM BAG IAW SRM 53-00-50-2R-1 PARA 3M(1).

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