Service difficulty report · Flange · Boeing 7377H4

Difficulty date
April 21, 2022
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N955WN
Make and model
Boeing 7377H4
Aircraft serial
36671
Aircraft time
36,505 hours, 22,114 cycles
Part
Flange
Condition
Cracked
Location
Ext Pwr Door
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

EXTERNAL POWER DOOR LOWER CUTOUT FLANGE CRACKED. / [01] VERIFIED MATERIAL ID FOR REPAIR DOUBLER IS 7075 T6 .050 TAG #A41234 ;.040 2024 T3 TAG #A84491 FILLER IAW SRM 53-10-15-2R-4 REPAIR 4;[02] VERIFIED STEP 1;[03] STEP 1 OK;[04] CUT AND REMOVED DAMAGED SECTION OF LOWER SURROUND DOUBLER IAW SRM 53-10-15-2R-4 SECTION 4.C;[05] HFEC CUT EDGE IAW B737 NDT PART 6 51-00-00 PROCEDURE 23. NO DEFECTS NOTED. TOOL# 40083 DUE 14SEP22;[06] VERIFIED STEP 4;[07] ACCOMPLISHED INSURANCE CUT; FABRICATED; LOCATED AND DRILLED REPAIR PARTS IAW SRM 53-10-15-2R-4 SECTION 4.C-J.;[08] C/W<BR>OK TO TREAT AND PRIME;[09] APPLIED CHEMICAL CONVERSION AND PRIMER IAW SRM 53-10-15-2R-4 SECTION 4 K AND L.;[10] C/W TREAT AND PRIME<BR>OK TO INSTALL;[11] INSTALLED REPAIR PARTS IAW SRM 53-10-15-2R-4 SECTION 4.M.;[12] REMOVED DAMAGED SECTION OF ELECTRICAL POWER CUTOUT LOWER SURROUND DOUBLER FLANGE AND ACCOMPLISHED REPAIR IAW SRM 53-10-15-2R-4.;[13] VERIFIED REPAIR IS COMPLETE<BR>AUDIT C/W

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