Service difficulty report · Doubler · Boeing 7378H4

Difficulty date
December 28, 2021
Submitted
December 30, 2021
Operation
Air carrier
Aircraft
N8675A
Make and model
Boeing 7378H4
Aircraft serial
35976
Aircraft time
20,667 hours, 9,472 cycles
Part
Doubler
Condition
Cracked
Location
Fuselage
Stage of operation
UK
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 CUTOUT LOWER DOOR LATCH BLOCK ATTACH POINT CRACKED ; / [01] CUT-OUT DAMAGE AT EXTERNAL POWER CUTOUT LOWER DOOR LATCH BLOCK ATTACH POINT IAW SRM 53-10-15-2R-4 REPAIR 4 STEP(4); [02] VERIFIED NEW DOUBLER MATERIAL AS 2024-T3-.050/ ALSO VERIFIED NEW FILLER MATERIAL AS 2024-T3-.040 IAW SRM 53-10-15-2R-4 REPAIR 4; [03] VERIFIED NEW DOUBLER MATERIAL AS 2024-T3-.050/ ALSO VERIFIED NEW FILLER MATERIAL AS 2024-T3-.040 IAW SRM 53-10-15-2R-4 REPAIR 4 ATAG A34144/A12631; [04] VERIFIED STEPS 1 THROUGH 3; [05] ACCOMPLISHED HFEC IAW B737 NDT PART 6; 51-00-00 P23.<BR>NO DEFECTS NOTED. TOOL 40083 DUE 14EP22; [06] FABRICATED/LOCATED AND DRILLED NEW DOUBLER AND NEW FILLER IAW SRM 53-10-15-2R-4 REPAIR 4; [07] VERIFIED STEP 6<BR>OK TO TREAT AND PRIME; [08] TREATED & PRIMED REPAIR PARTS IAW AMM 51-21-41-370-803/51-21-72-370-801; [09] OK TO INSTALL NEW DOUBLER AND FILLER; [10] INSTALLED NEW DOUBLER & FILLER AT EXTERNAL POWER DOOR LATCH BLOCK ATTCH POINT IAW SRM 53-10-15-2R-4 REPAIR 4; [11] CUT-OUT DAMAGE AT EXTERNAL POWER CUTOUT LOWER DOOR LATCH BLOCK ATTACH POINT IAW SRM 53-10-15-2R-4 REPAIR 4 STEP(4).INSTALLED NEW DOUBLER & FILLER AT EXTERNAL POWER DOOR LATCH BLOCK ATTCH POINT IAW SRM 53-10-15-2R-4 REPAIR 4; [12] VERIFIED STEPS 8;10 AND 11<BR>AUDIT CW

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