Service difficulty report · Doubler · Boeing 7377H4

Difficulty date
July 2, 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
Doubler
Condition
Corroded
Location
Bs 801
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 ON SKIN DOUBLER AT AFT CARGO BAY BS801 RBL3 WL151. ; / [01] REMOVED CORROSION DAMAGE ON SKIN DOUBLER AT ACB BS801; RBL3; WL151 IN AREA OF L=1.75' X W=1' IAW SRM 51-10-02-0G-0; [02] VERIFIED; [03] VERIFIED CORROSION REMOVED; [04] UT INSPECTED BLEND IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2; REMAINING THICKNESS IS 0.086' ADJACENT TO 0.090'. EQUIP ID#: ATS2031 S/N: 170515011; [05] HFEC INSPECTED BLEND IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071; [06] WIP 1; 2 AND 3 COMPLETE PENDING ENGINEERING; MEASUREMENT TABLE NEED AMT UPDATES; [07] RECEIVED FINAL EA ( TTG8Q0062B2S ) ALL STEPS COMPLETE.; [08] EDIT MEASUREMENTS- 18-0.086; AND REMOVE N/A; 19 NO-RI (NO-REINFORCED) AND REMOVE N/A. 20 MINOR (MINOR) 21 LEVEL2 (LEVEL 2); [09] VERIFIED CORRECTIVE ACTIONS 7 AND 8.<BR><BR>FINAL EA RECEIVED. ALL WORK ACCOMPLISHED. <BR><BR>SA-M 735 WILL BE SUBMITTED TO FIX MEASUREMENTS 18; 19; 20; & 21. DUE TO MAINTENIX ERRORS.

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