Service difficulty report · Channel · Boeing 7377H4

Difficulty date
June 10, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N298WN
Make and model
Boeing 7377H4
Aircraft serial
32543
Aircraft time
45,656 hours, 26,955 cycles
Part
Channel
Condition
Corroded
Location
Bs 727d-787 S25l
Stage of operation
IN
How discovered
V
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 COMPT. FLOOR SUPPORT Z CHANNEL S-25L FROM STA 727D TO 787 ; / [01] REMOVE CORROSION AT AFT CARGO COMP FLOOR<BR> SUPPORT S-25L STA727D TO STA 787 AS PER B737 SRM 53-00-53; [02] CERTIFIED REMOVAL CORROSION; [03] VERIFIED CORROSION REMOVAL; [04] PERFORMED UT THICKNESS INSP ON AFT CARGO REWORKED AREA IAW B737 NDT P4 51-00-00 PROC.3 ; MIN THICKNESS NOTED FROM STA 747+10' - 787 IS 0.030' AND REST AREA NOTED 0.036'<BR>TOOL USED : OLYMPUS 27MG BC:172139; [05] ORIGINAL THICKNESS.040''; MATERIAL LOST.010''; MATERIAL REMAINING.030'' FOUND OUT LIMITS IAM B-737-700 SRM-53-00-53-1A-2; [06] CERTIFIED EVALUATION; [07] VERIFIED EVALUATION. FOUND OUT OF LIMITS.; [08] REMOVED ZEE CHANNEL L/H SIDE AT AFT CARGO COMP FROM STA 727 TO STA 847 IN IAW SRM 51-40-02-0G-0; 53-00-53-2R-5; [09] RECEIVED NEW ZEE CHANNEL P/N BAC 1496-377 7075 T6 PO#1723699; LOCATED AND DRILLED NEW ZEE CHANNEL FROM STA 737 TO 847 IN IAW SRM 51-40-05-0G-0; 53-00-53-2R-5; [10] VERIFIED 8 AND 9.

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