Service difficulty report · Support · Boeing 7377CT

Difficulty date
June 3, 2021
Submitted
August 25, 2021
Operation
Air carrier
Aircraft
N7823A
Make and model
Boeing 7377CT
Aircraft serial
32749
Aircraft time
61,112 hours, 30,940 cycles
Part
Support
Condition
Corroded
Location
Bs 259 Lbl2
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORRSION OF INTERCOSTAL SUPPORT ; CORRSION AT INTERCOSTAL SUPPORT BS 259 +4 LBL 2 WL 208 / [01] REMOVED CORROSION ON SUPPORT CHANNEL AT BS 294+4; LBL 2; WL 208. DIMENSION OF DAMAGE REMOVAL AREA FOUND TO BE 1' X 1' WITH A MAX DEPTH OF 0.007' FROM ORIGINAL THICKNESS OF .040'. DAMAGE FOUND TO BE OUT OF LIMITS PER SRM 53-10-51-1A-1; FIG. 105; DETAIL E.; [02] VERIFIED REMOVED CORROSION ON SUPPORT CHANNEL AT BS 294+4; LBL 2; WL 208. DIMENSION OF DAMAGE REMOVAL AREA FOUND TO BE 1' X 1' WITH A MAX DEPTH OF 0.007' FROM ORIGINAL THICKNESS OF .040'. DAMAGE REMOVAL WAS MEASURED BY ATS PIN POINT DEPTH GAUGE ID: ATS400; S/N: UNKNOWN; CAL DUE DATE: 04/2022. DAMAGE FOUND TO BE OUT OF LIMITS PER SRM 53-10-51-1A-1; FIG. 105; DETAIL E.; [03] REMOVED DAMAGED SUPPORT CHANNEL BS 259-270; LBL 3 - RBL 3; WL 208 PER SRM 51-40-02-0G-0.; [04] LOCATED AND DRILLED NEW SUPPORT CHANNEL BS 259-270; LBL 3 - RBL 3; WL 208 PER SRM 51-40-05-0G-0. OK TO INSTALL; [05] VERIFIED LOCATED AND DRILLED NEW SUPPORT CHANNEL BS 259-270; LBL 3 - RBL 3; WL 208 PER SRM 51-40-05-0G-0. OK TO INSTALL; [06] INSTALLED INTERCOSTAL SUPPORT BS 259-270; LBL 3 - RBL 3; WL 208 PER SRM 51-40-02-0G-0; DWG #141A5210.; [07] INSTALLED INTERCOSTAL SUPPORT BS 259-270; LBL 3 - RBL 3; WL 208 PER SRM 51-40-02-0G-0; DWG #141A5210; [08] VERIFIED INSTALL OF INTERCOSTAL SUPPORT BS 259-270; LBL 3 - RBL 3; WL 208 PER SRM 51-40-02-0G-0; DWG #141A5210; [09] COMPLETED

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