Service difficulty report · Sidewall Support · Boeing 7378H4

Difficulty date
February 6, 2024
Submitted
March 4, 2024
Operation
Air carrier
Aircraft
N8563Z
Make and model
Boeing 7378H4
Aircraft serial
64172
Aircraft time
19,968 hours, 10,090 cycles
Part
Sidewall Support
Part number
UNKNOWN
Condition
Corroded
Location
Bs 727h-767
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 CARGO BAY L/H FLOOR TO SIDEWALL SUPPORT HAS CORROSION BS 727H+6 TO 767+14 LBL 24 WL 156<[01] EVALUATED CORROSION ON L/H FLOOR TO SIDEWALL SUPPORT BS 727H+6 TO BS 767+14 IN NUMEROUS 1'X1' AREAS FOUND DEEPEST LOCATION TO BE AT BS 747+10 LBL 24 WL 156 FOUND 0.015 REMOVED FROM ORIG 0.040 FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ATS 2678 DUE 05/2024;[02] VERIFIED CORRECTIVE ACTIONS STEP 1.;[03] OK TO PRIME REPAIR PARTS GIVEN.;[04] EVALUATED CORROSION ON ACB LH FLOOR TO SIDEWALL SUPPORT; FOUND TO BE OUT OF LIMITS; IAW 53-00-53-1A-2; LOCATED DRILLED ; FABRICATED; TREATED AND PRIMED AND INSTALLED REPAIR PARTS; BS 727G+10 TO 787+7; IAW AMM 51-21-72-370-804; SRM 53-00-53-2R-5; SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; SRM 51-20-01-0G-0; DWG 146A7500.;[05] VERIFIED CORRECTIVE ACTION 4.<BR>JOB COMPLETE.

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