Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
April 8, 2023
Submitted
May 18, 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 221DF UPPER FACESHEET HAS MULTIPLE AREAS OF PULLED STRANDS.<EXCEEDS THE ALLOWABLE DAMAGE LIMITS PER SRM 53-00-50-1A-1 PARA 4. B. 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;[05] REMOVED 26EA THROUGH INSERTS & 6EA BLIND INSERTS 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 & 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 ATS2798 CAL DUE 10/2023 & 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; REMOVED 3EA DAMAGED BLIND INSERTS THEN INSTALLED ALL NEW BLIND INSERTS USING POTTING BMS5-28 TYPE 19 LOT#AK2LP8414K IAW SRM 53-00-50-2R-1 PARA 3M(1)-N<BR><BR>INSERTS NEED CURE.;INSERTS REMOVED IN CORRECTIVE ACTION LINES 5 & 11 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;CABIN FLOOR PANEL 221DF UPPER SURFACE FACE SHEET WAS REPAIRED IAW SRM 53-00-50-2R-1;

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