Service difficulty report · Door Frame · Boeing 7377H4

Difficulty date
May 12, 2021
Submitted
June 30, 2021
Operation
Air carrier
Aircraft
N400WN
Make and model
Boeing 7377H4
Aircraft serial
27891
Aircraft time
66,325 hours, 39,077 cycles
Part
Door Frame
Condition
Cracked
Location
R1 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

CRACK FOUND AT R1 DOOR CUTOUT INTERNAL. ; / EVALUATED CRACK STARTED FABRICATION OF DOUBLER AND TRIPLER FOR SKIN REPAIR AT R1 DOOR UPPER FWD CORNER PER B737-700 SRM 53-10-01-2R-6 FIG 202.; [16] VERIFIED FABRICATION OF DOUBLER AND TRIPLER FOR SKIN REPAIR AT R1 DOOR UPPER FWD CORNER PER B737-700 SRM 53-10-01-2R-6 FIG 202OVERSIZED EXISTING RIVET HOLES AT REPAIR AREA PER B737-700 SRM 53-10-01-2R-6 STEP 2K.; [23] INSTALLED COUNTERSINK REPAIR WASHERS IN THE INITIAL COUNTERSINK LOCATIONS PER B737-700 SRM 53-10-01-2R-6 STEP 4L.; [24] VERIFIED THE OVERSIZED EXISTING RIVET HOLES AT REPAIR AREA PER B737-700 SRM 53-10-01-2R-6 STEP 2KVERIFIED CONTINUATION OF FABRICATION OF REPAIR PARTS DOUBLER & TRIPLER PER B737-700 SRM 53-10-01-2R-6 REPAIR 6; [28] COMPLETED DRILLING AND TRIMMING PROCESS OF REPAIR PARTS DOUBLER & TRIPLER ( PENDING CHAMFER ) PER B737-700 SRM 53-10-01-2R-6; TABLE 201; FIG 202; REPAIR 6; [29] FABRICATED REPAIR PARTS FLAT SHIM [7] MAT. USED 2024-T3 CLAD .063IN AND FILLER [4] MAT. USED 2024-T3 CLAD .090IN PER B737-700 SRM 53-10-01-2R-6 REPAIR 6; TABLE 201; FIG 202; [30] COMPLETED FABRICATION OF REPAIR PARTS DOUBLER & TRIPLER PER B737-700 SRM 53-10-01-2R-6 REPAIR 6;<BR>TABLE 201; FIG 202; PARAGRAPH 4.E.

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