Service difficulty report · Sidewall Support · Boeing 7378

Difficulty date
November 8, 2023
Submitted
November 28, 2023
Operation
Air carrier
Aircraft
N8704Q
Make and model
Boeing 7378
Aircraft serial
36988
Aircraft time
12,980 hours, 5,976 cycles
Part
Sidewall Support
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

CORROSION ON FWD CARGO BAY LH FLOOR TO SIDEWALL SUPPORT AT LBL 24 WL 156; AT BS 500B+2; BS 500B+20.5; BS 500C+2.5; BS 500C+11.5; AND BS 500D+15.5<[01] VERIFIED STEPS 1;2;3;4;5; COMPLETE.;[02] REMOVED AND REPLACED FCB LH FLOOR TO SIDEWALL SUPPORT ANGLE BS 396 TO BS 500I LBL 24;WL-156 IAW SRM 51-40-02-0G-0 AND DWG 143A7500.;[03] 'THE DAMAGE WAS REPAIRED PER 737-8 SRM 53-00-53-2R-5 (REPAIR 5) AND EA 23-153-03335';[04] RII REQUIREMENTS COMPLETE; VERIFIED CORRECTIVE ACTION ITEMS AND MEASUREMENT FIELDS; CARD COMPLETE.;[05] EDITED MEASUREMENT FIELD ITEM 23; CHANGED TO NOT A MAJOR 'NO' ON THIS CARD. EA 23-153-03335 WIP1 IS WHERE THE MAJOR REPAIR SPLICE IS PERFORMED.

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