Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
January 4, 2024
Submitted
January 26, 2024
Operation
Air carrier
Aircraft
N8677A
Make and model
Boeing 7378H4
Aircraft serial
36650
Aircraft time
27,106 hours, 13,052 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
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

AFT WET AREA; CORROSION ON UPPER CHORD OF STA. 947 FLOOR BEAM AT RBL 51' NEAR LAV MOUNT.<[01] BLENDED CORROSION PER SRM 51-10-02. REMOVED .055? OF MATERIAL. REMAINING THICKNESS IS .125?. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1.;[02] VERIFIED CA1. RAJESH ALI (TECHNICIAN); 04-JAN-2024 10:21 UTC<BR>BLENDED CORROSION PER SRM 51-10-02. REMOVED .055? OF MATERIAL. REMAINING THICKNESS IS .125?. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1.;[03] REMOVED THE DAMAGED FLANGES OF THE UPPER CHORD OF THE FLOOR BEAM AT STA 947; LBL 60 TO RBL 60 PER SRM 53-70-51-2R-5.;31] VERIFIED C/A # 30 : LONNIE HERMANN (TECHNICIAN); 12-JAN-2024 09:44 UTC<BR>APPLIED A FILL, 12-JAN-2024 07:34 UTC INSTALLED 947 REPAIR (1) T CHORD (LBL 60 - RBL 60), (2) SPLICE ANGLES (3) STRAPS AND (4) FILLERS IAW SRM 53-70-51-2R-5 AND EA 24-153-00079 WIP 1 AND WIP 2. 33.13-JAN-2024 17:40 UTC STA 947 T-CAP REPAIR WAS COMPLETED PER SRM 53-70-51-2R-5 AND EA 24-153-00079.

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