Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
August 10, 2023
Submitted
August 24, 2023
Operation
Air carrier
Aircraft
N420WN
Make and model
Boeing 7377H4
Aircraft serial
29825
Aircraft time
72,005 hours, 42,658 cycles
Part
Floor Panel
Part number
UNKNOWN
Condition
Delaminated
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

FLOOR PANEL 241RF UPPER SURFACE IS DELAMINATED.<[01] IDENTIFIED FLOOR PANEL 241RF MATERIALS IAW SRM 53-00-50-0I-1 FIG 5 TABLE 5 AND BOEING DWG 146A5810 ID:0011.<BR><BR>FOUND DELAMINATION DAMAGE TO UPPER SURFACE SKIN PLIES TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARA 4F. <BR><BR>DUE TO EXTENT OF DAMAGE FABRICATED NEW FLOOR PANEL FROM BMS4-23TYPE2 LOT#1534174-1; INSTALLED INSERTS USING BMS5-107 LOT#1534504-1; CURED USING HEAT LAMPS AND THERMOMETER ATS2208 CAL DUE DATE 10/2023 AND PART MARKED PANEL IAW SRM 53-00-50-2R-1 PARA 1A(NOTE) AND BOEING DWG 146A5810 ID:0011.;[02] INSPECTED AND VERIFIED CORRECTIVE ACTION 1.;[03] ATTACHED CURE SHEET.;[04] JOB COMPLETE.

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