Service difficulty report · Panel · Boeing 7377H4

Difficulty date
April 12, 2022
Submitted
April 22, 2022
Operation
Air carrier
Aircraft
N769SW
Make and model
Boeing 7377H4
Aircraft serial
30588
Aircraft time
74,146 hours, 43,614 cycles
Part
Panel
Part number
193AR
Condition
Delaminated
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

PANEL 193AR HAS 2 DELAMINATED AREAS ON OUTER SURFACE SKIN AS NOTED ON FAULT TTG8Q00BMNQU / [01] IDENTIFIED PANEL 193AR MATERIAL IAW SRM 53-40-70-0I-1 TABLE 2 FIGURE 2 ITEM 18. DELAMINATED SKIN AT DISCREPANT LOCATIONS OVER HONEYCOMB CORE EXCEED ALLOWABLE DAMAGE LIMITS IAW SRM 53-40-70-1A-1 PARAGRAPH 4.A(6). DAMAGE IS REPAIRABLE PER SRM 51-70-05-2R-1 AS DIRECTED BY SRM 53-40-70-2R-1 <BR><BR>REMOVED 2 AREAS OF DAMAGE ON OUTER SURFACE OF PANEL 193AR; ONE AREA WAS A DETERIORATED PREVIOUS REPAIR. AREAS MEASURE 4.5' X 2.5' AND 5.5' X 2.5'. NO CONTAMINATION NOTED; AND CLEANED REPAIR AREAS IAW SRM 51-70-05-2R-1 PARAGRAPH 4.A-B.;[02] VALIDATED REPAIR PER SRM 51-70-50-2R-1;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VALIDATED REPAIR PER SRM 51-70-50-2R-1;[04] FABRICATED REPAIR PLIES FROM BMS 8-79ST1581 LOT#1482269-1 AND ADHESIVE BMS 5-129GR5 LOT#1483751-1; INSTALLED; VACUUM BAGGED; LEAK CHECK GOOD; CURED WITH HOTBONDER ID:NCX000526 S/N:12051216; UNBAGGED IAW SRM 51-70-05-2R-1 PARA 4C-E.;[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4. POST REPAIR UT INSPECTED PER 737NDT PART 4 51-00-02. NO DEFECTS FOUND. TOOL E650 ATS2342.;[06] APPLIED AND CURED BMS 10-21 TY III LOT#S21H278 CONDUCTIVE COATING USING THERMOMETER ID:ATS2208 S/N:43300740WS; CONDUCTIVITY TESTED GOOD USING MULTIMETER ID:ATS1658 S/N:43000350 IAW AMM 51-21-71-370-801 PAR 3D(1-4;7A).;[07] COMPLETED REFINISH OF PANEL'S TOOLSIDE IAW SRM 51-70-05-2R-2 PARAGRAPH 4.K.;[08] FINAL INSPECTION. JOB COMPLETE PER SRM 51-70-05-2R-1.

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