Service difficulty report · Bulkhead · Boeing 7377H4

Difficulty date
November 3, 2023
Submitted
November 27, 2023
Operation
Air carrier
Aircraft
N793SA
Make and model
Boeing 7377H4
Aircraft serial
27888
Aircraft time
73,058 hours, 43,386 cycles
Part
Bulkhead
Part number
UNKNOWN
Condition
Out Of Tolerance
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

CUSTOMER REJECT- FOUND SEVERAL EXISTING HOLES OUT OF TOLERANCE AT STA 1016 BULKHEAD.<[01] OVERSIDE FASTENERS FOUND OUT OF TOLERANCE OF APB BETWEEN RBL-4 AND RBL-16 AS PER B737-700 SRM 51-40-05-0G-0 FIG 4 A TOTAL OF 10 FASTENERS WERE STEP UP TO 2ND OVERSIDE(.216') WITH NO CRACKS FOUND . TWO FASTENERS BOTTON SECTION OF RBL-15 AND RBL-16 FOUND BEYOND .216'.DAMAGES HOLES DIMENSIONS .230;[02] CORRECTIVE ACTION ENTRY #1 WAS ENTERED IN ERROR.;[03] ACCOMPLISHED APB OIL CANNING REPAIR AT STA 1016; BETWEEN BL-0 AND S-3R IN REF TO B737 SRM 53-80-08-2R-13; EA 23-153-03288-WIP1 (TTG8Q00PG488); EA 23-153-03288-WIP2 (TTG8Q00PKFYL); EA 23-153-03288-WIP3 (TTG8Q00PLRC6); EA 23-153-03288-WIP4 (TTG8Q00PNCJX); EA 23-153-03288-WIP5 (TTG8Q00PPV65); EA 23-153-03288-WIP6 (TTG8Q00PQ6JX); AND EA 23-153-03288-FINAL. (TTG8Q00PT2T9).;[04] RII VERIFIED STEP 3

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