Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
May 29, 2023
Submitted
June 28, 2023
Operation
Air carrier
Aircraft
N8536Z
Make and model
Boeing 7378H4
Aircraft serial
63571
Aircraft time
20,012 hours, 9,739 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

CABIN STA. 947 FLOOR BEAM; LBL 24; TIE DOWN HAS CORROSION AT FWD END.<[01] CUT/REMOVED DAMAGED FLANGE OF THE UPPER CHORD OF THE FLOOR BEAM LBL 9 TO LBL 34.;[02] CORRECTIVE ACTION #1 WAS PERFORMED PER SRM 53-70-51-2R; ALTERNATIVE 2.;[03] CORRECTIVE ACTION #1 WAS PERFORMED PER SRM 53-70-51-2R-5; ALTERNATIVE 2.;[04] VERIFIED CA#1; #2; AND #3. JASON BORN (TECHNICIAN); 31-MAY-2023 17:15 UTC CUT/REMOVED DAMAGED FLANGE OF THE UPPER CHORD OF THE FLOOR BEAM LBL 9 TO LBL 34. CORRECTIVE ACTION CA #1 WAS PERFORMED PER SRM 53-70-51-2R-5; ALTERNATIVE 2.;[05] ACCOMPLISHED A DETAILED VISUAL INSPECTION PER SRM 53-70-51-2R-5; ALTERNATIVE 2. NO DEFECTS NOTED;[06] FLAP PEENED THE CUT EDGES WITH 100% COVERAGE PER SOPM 20-10-03.;[07] VERIFIED6. RAJESH ALI (TECHNICIAN); 01-JUN-2023 06:22 UTC<BR>FLAP PEENED THE CUT EDGES WITH 100% COVERAGE PER SOPM 20-10-03.;[08] LOCATED AND DRILLED SPLICE ANGLES AT LBL 34 PER SRM 53-70-51-2R-5; ALTERNATIVE 2.;[09] FABRICATED REPAIR PARTS PER SRM 53-70-51-2R-5.;[21] FLOOR BEAM REPAIRED PER SRM 53-70-51-2R-5; ALTERNATIVE 2; AND EA 23-153-01756. SEE INDIVIDUAL STEPS FOR WORK PERFORMED.;[22] RII C/W

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