Service difficulty report · Floor Panel · Boeing 737

Difficulty date
December 2, 2021
Submitted
April 29, 2022
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 737
Aircraft serial
33989
Aircraft time
58,884 hours, 34,869 cycles
Part
Floor Panel
Condition
Delaminated
Location
Fuselage
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

SUPPLEMENTAL INFORMATION: CABIN FLOOR PANEL 242AF; UPPER FACE SHEET HAS FIBER DAMAGE; SMALL PUNCTURE AND CORNER DELAMINATION. DOT 234/02 ; / [01] EVALUATED AND FOUND PUNCTURE ON LWR SIDE APPROX CENTER I/B SIDE EXPOSING CORE AND CORE DAMAGE AT AFT I/B CORNER. TAP TEST GOOD AROUND DAMAGES. FOUND TO BE REPAIRABLE IAW SRM 53-00-50-2R-1 FOR PUNTURE AND SRM 53-00-50-2R-10 FOR CORNER DAMAGE.<BR><BR>VERIFIED MATERIAL IAW SRM 53-00-50-2R-10 REPAIR GENERAL TABLE 201 AND SRM 53-00-50-2R-1 TABLE 201. POTTING COMPOUND (A101798); RESIN (A102320); FABRIC (A10273).<BR><BR>APPLIED POTTING COMPOUND ON I/B AFT CORNER IAW SRM 53-00-50-2R-10 STEP 3 A-G AND SRM 53-00-50-2R-0 REPAIR GENERAL STEP 5 A; D-E AND P. CURED AT 120 DEGREES (OVEN B0-06 EXP 2-19-22).<BR><BR>CLEANED AND PREPPED PUNCTURE IAW SRM 53-00-50-2R-1 STEP 3 A; C-E AND SRM 53-00-50-2R-0 REPAIR GENERAL STEP 5 A-B; D-E.<BR><BR>APPLIED POTTING COMPOUND TO PUNCTURE IAW SRM 53-00-50-2R-1 STEP 3 G-I AND SRM 53-00-50-2R-0 REPAIR GENERAL STEP 5 P. CURED AT 120 DEGREES (OVEN B0-06 EXP 2-19-22).<BR><BR>REQUESTING OK TO BOND; [02] STEP 1 OK. OK TO BOND; [03] BONDED REPAIR IAW SRM 53-00-50-2R-1 STEP 3 K-M. CURED AT 150 DEGREES (OVEN B0-06 EXP 2-19-22). TAP TEST GOOD.; [04] BONDED REPAIR AND POTTED CORE ON EDGE ON CABIN FLOOR PANEL 242AF IAW SRM 53-00-50-2R-1; SRM 53-00-50-2R-10 AND SRM 53-00-50-2R-0 REPAIR GENERAL.; [05] VERIFIED STEPS 3-4; [06] AUDITED