Service difficulty report · Sidewall Support · Boeing 7378

Difficulty date
September 19, 2023
Submitted
October 5, 2023
Operation
Air carrier
Aircraft
N8709Q
Make and model
Boeing 7378
Aircraft serial
42563
Aircraft time
13,020 hours, 5,893 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 AFT CARGO BAY L/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS727D+12' TO BS767+4' LBL22 WL156<[01] CORRECTION TO TASK DETAIL SHOULD STATE ' CORROSION AFT CARGO BAY L/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS727G+12' TO BS767+4' LBL22 WL156;[02] EVALUATED CORROSION ON ACB LH FLOOR TO SIDEWALL; FOUND TO BE OUT OF LIMITS FROM BS727G=12 TO 767+4; REMOVED DAMAGED SECTION; FORM 727F+12 TO 787+8; LOCATED ; DRILLED FABRICATED; APPLIED CHEMICAL CON VERSION COATING; PRIMED; AND INSTALLED REPAIR PARTS; ALL IAW DWG 146A7500; SRM 53-00-53-2R-5; SRM 51-01-0G-0; SRM 51-40-02-0G-0;SRM 51-40-05-0G-0;AMM 51-21-72-370-804. SPLICES AT BS 727F+12; AND 787+8.;[03] VERIFIED CORRECTIVE ACTION #2<BR>VERIFIED MEASUREMENTS

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