Service difficulty report · Floor Panel · Boeing 7378H4

Difficulty date
March 27, 2022
Submitted
April 21, 2022
Operation
Air carrier
Aircraft
N8628A
Make and model
Boeing 7378H4
Aircraft serial
42384
Aircraft time
27,196 hours, 12,448 cycles
Part
Floor Panel
Part number
221CF
Condition
Corroded
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

PASSENGER CABIN FLOOR PANEL 221CF; HAS NUMEROUS CORRODED INSERTS. / REMOVED (17 EA) CORRODED THROUGH INSERTS ALONG THE PERIMETER AND CENTER OF PANEL IAW SRM 53-00-50-2R-0 PARA 5. B. (2) <BR><BR>FOUND CORE DAMAGE AT EDGE OF PANEL AT INSERT LOCATIONS P1; P2; P10; P11; P12; P20; P22 AND P23 ON DWG 141A5810-9.. DAMAGES IS OUT OF ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4F. <BR>REPAIRS TO BE ACCOMPLISHED IAW SRM 53-00-50-2R-10.;[02] UPDATED MEASUREMENTS; CERTIFIED CORRECTIVE ACTION 1 AND VALIDATED REPAIR PER SRM 53-00-50-2R-10;[>VALIDATED REPAIR PER SRM 53-00-50-2R-10;[04] REMOVED THE DAMAGED EDGE CORE FROM INSERT LOCATIONS P1; P2; P10; P11; P12; P20; P22 AND P23 ON DWG141A5810-9; NO MOISTURE OR OTHER UNWANTED MATERIALS NOTED; AND CLEANED ALL 8 EDGE AREAS PER SRM 53-00-50-2R-10 PARA 3.A-D. OKAY TO APPLY EDGE POTTING.;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4. OKAY TO APPLY POTTING COMPOUND PER SRM 53-00-50-2R-10.;[06] MIXED ;APPLIED THEN SET TO CURE BMS5-28 TY19 POTTING COMPOUND LOT# AK1KP5968K USING SCALE ATS2276/SN:P1662209 AND THERMOMETER ID:ATS2209/SN:43300739WS IAW SRM 53-00-50-2R-10 PARA 3.E-F.;[07] VERIFIED POTTING COMPOUND CURE WAS COMPLETE AND SANDED SMOOTH WITH INITIAL EDGE IAW SRM 53-00-50-2R-10 PARA 3. F. - G;[08] INSTALLED AND CURED 17EA THRU INSERTS IAW SRM 53-00-50-2R-0 PARA5.S.1;[09] CORRECTION TO LINE 8; SHOULD HAVE INCLUDED USING THERMOMETER ID:ATS2209/SN:43300739WS AND LOT#AK0KP9324K;[10] ADDING DRAWING 141A5810-9 TO CORRECTIVE ACTION 8

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