Service difficulty report · Doubler · Boeing 7377H4

Difficulty date
May 26, 2023
Submitted
June 8, 2023
Operation
Air carrier
Aircraft
N919WN
Make and model
Boeing 7377H4
Aircraft serial
36625
Aircraft time
49,324 hours, 29,539 cycles
Part
Doubler
Condition
Cracked
Location
Zn 100 Fus Lower
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

GROUND POWER RECEPTACLE SURROUND DOUBLER CRACKED COMMON TO LOWER EDGE.<[01] VERIFIED APPLICABILITY IAW SRM 51-10-15-1A-5;[02] REMOVED EGPR ACCESS DOOR AND INITIAL RUBING BLOCK AND TRIM OUT DAMAGE AREA IAW SRM 53-10-15-2R-4 FIG. 204. REQ. VISUAL INSPECTION;[03] CUT OUT REMOVED AREA W-0.425'; L-1;4' IAW SRM 53-10-15-2R-4 FIG. 204;[04] VERIFIED CORRECTIVE ACTION 1-3;[05] HFEC INSPECTED CUTOUT AREA IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23.<BR>NO CRACKS NOTED.<BR>EQUIP USED:<BR>-NORTEC 600 ID: ATS1465 CAL DUE: 09/23;[06] HFEC INSPECTED INTERNAL INSPECTION AREA IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23.<BR>NO CRACKS NOTED.<BR>EQUIP USED:<BR>-NORTEC 600 ID: ATS1465 CAL DUE: 09/23;[07] PERFORMED INSURANCE CUT OF THE TRIM OUT AREA AND VISUAL INSPECTION OF THE TRIM AREA; NO DAMAGE NOTED; IAW<BR>SRM 53-10-15-2R-4 FIG. 204;[08] FABRICATED; LOCATED AND DRILLED -2 DOUBLER FROM 2024 T3 CLAD O.050' LOT. 1517310-1 AND -3 FILLER FROM 2024 T3 CLAD 0.040' LOT. 1521700-1 FOR REPAIR IAW SRM 53-10-15-2R-4 FIG. 204. REQ. OK TO TREA AND PRIME REPAIR PARTS;[09] VERIFIED CORRECTIVE ACTION 7 AND 8.;[10] COUNTERSINKED; APPLIED CENICAL CONVERSION COATING AND PRIMED REPAIR PARTS. IAW SRM 51-40-08; SRM 51-20-01; SRM 53-10-15-2R-4. OK TO INSTALL.] INSTALLED REPAIR PARTS IAW SRM 53-10-15-2R-4;[13] VERIFIED CORRECTIVE ACTION #12.;[14] INSTALLED EGPR ACCESS DOOR IAW AMM 52-49-02-400-801. UPDATED MEASUREMENTS TABLE

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