Service difficulty report · Cargo Track · Boeing 7377H4

Difficulty date
July 1, 2021
Submitted
August 11, 2021
Operation
Air carrier
Aircraft
N750SA
Make and model
Boeing 7377H4
Aircraft serial
29802
Aircraft time
75,691 hours, 44,551 cycles
Part
Cargo Track
Condition
Corroded
Location
Bs 773
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 RAIL AT AFT CARGO BAY BS773 LBL3 WL157. ; / [01] REMOVED CORROSION ON RAIL AT AFT CARGO BAY BS 773 ; LBL 3 ; WL 157 ; WORK AREA 2.0'X 1.0 ' X 0.014'; ORIGINAL THICKNESS 0.063' ;REMAINING THICKNESS IS 0.049' ;TO BE FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2 ;STEP 4A (2); [02] VERIFIED; [03] VERIFIED REMOVED CORROSION ON RAIL AT AFT CARGO BAY BS 773 ; LBL 3 ; WL 157 ; WORK AREA 2.0'X 1.0 ' X 0.014'; ORIGINAL THICKNESS 0.063' ;REMAINING THICKNESS IS 0.049' ;TO BE FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2 ;STEP 4A (2); [04] VERIFIED APPLICABILITY FOR SRM 53-00-53-2R-2; REPAIR 2.; [05] REMOVED DAMAGED AREA (UPPER FLANGE) FROM ACB RAIL BS773 LBL3; WL 157 IAW SRM 53-00-53-2R-2; REPAIR 2; PAR. 4.A-4.D. FIG. 202;; [06] VERIFIED; [07] REQUEST HFEC ON CUT EDGE.IAW SRM CH 53-00-53-2R-2; [08] VERIFIED CORRECTIVE ACTION ITEMS 4; 5; AND 6. SRM 53-00-53-2R-2; REPAIR 2 IS APPLICABLE.<BR><BR><BR>HFEC INSPECTED TRIM OUT PER NDTM PART 6; 51-00-00 PROCEDURE 23. NO CRACKS NOTED.<BR>CAL ID: ATS1465 S/N: 60004150296; [09] FABRICATED REPAIR U-CHANNEL USING BAC1510-1355 7050-T76511 ITEM(6) LOT#1447574-1 AND LOCATED AND DRILLED HOLES IAW 53-00-53-2R-2 REPAIR 2 FIG.203 SHEET 8 DETAIL E ALTERNATIVE 4; [10] OK TO APPLY CHEMICAL CONVERSION COATING AND PRIME;

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