Service difficulty report · Floor Panel · Boeing 737

Difficulty date
August 18, 2022
Submitted
September 22, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 737
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
Floor Panel
Part number
242RF
Condition
Cracked
Location
Cabin Floor
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

CABIN FLOOR PANEL 242RF UPPER SURFACE PLIES FRAYED / CRACKED SKIN PLIES AND DAMAGED CORE.<BR>DAMAGE NOTED IS OUT OF ALLOWALBE DAMAGE LIMITS REMOVED DAMAGE AND CLEANED REPAIR AREAS; OK TO POT EXPOSED CORE IAW SRM 53-00-50-2R-1 PARA 4C-F;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;VERIFIED CORRECTIVE ACTION ITEMS 1 AND 2.;[04] APPLIED POTTING BMS5-28 TYPE 19 LOT#AK2DP3091K TO EXPOSED CORE IAW SRM 53-00-50-2R-1 PARA 4G;[05] CURED POTTING USING THERMOMETER ID:ATS2208 DUE:10/2022; SANDED TILL SMOOTH; CLEANED REPAIR AREA; AND FABRICATED REPAIR PLIES USING BMS 9-3 LOT#1493221-1 IAW SRM 53-00-50-2R-1 PARA 3.H-K.<BR>OK TO INSTALL.;[06] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 4 AND 5. OKAY TO INSTALL REPAIR PLIES PER SRM 53-00-50-2R-1.;[07] INSTALLED REPAIR PLIES USING BMS 8-201 TY4 LOT#1496781-4; VACUUM BAGGED; LEAK CHECK GOOD USING VACUUM GAUGE ID:ATS2107 DUE:09/2022 IAW SRM 53-00-50-2R-1 PARA 3.K&LCURED REPAIR PLIES USING THERMOMETER ID:ATS2208 CALIBRATION DUE DATE:10/2022; UNBAGGED; LOCATED; DRILLED; AND UPSIZED ALL INSERT LOCATIONS COVERED BY REPAIRS; INSTALLED 7EA THROUGH INSERTS USING BMS 5-107 LOT#AK1KP9159K; CURED IAW SRM 53-00-50-2R-1 PAR 3M(1);N AND DWG 147A5810-2.<BR><BR>COMPLETED SRM REPAIR 53-00-50-2R-1.ADDED CURE SHEETS TO THIS FAULT RECORD.FINAL INSPECTION. REPAIR COMPLETE PER SRM 53-00-50-2R-1.;[13] FINAL INSPECTION. REPAIR COMPLETE PER SRM 53-00-50-2R-1.<BR><BR>VERIFIED MEASUREMENTS TABLE