Service difficulty report · Support · Boeing 7377H4

Difficulty date
April 21, 2022
Submitted
May 9, 2022
Operation
Air carrier
Aircraft
N927WN
Make and model
Boeing 7377H4
Aircraft serial
36889
Aircraft time
45,530 hours, 27,478 cycles
Part
Support
Condition
Corroded
Location
Fwd Cargo
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 FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 23 BS 500A+14; BS 500B+7; BS 500B+10; BS 500C+13. / [01] VERIFIED SRM 53-00-53-1A-2 IS APPLICAPLE FOR REPAIR.<BR><BR>REMOVED CORROSION AT 4 LOCATION ON FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT RBL 23 BS 500A+14 - BS 500C+13 PER SRM 51-10-02-0G-0. 1ST AREA 500A+14 MEASURES: L=0.600; W=0.400; Y=0.006. 2ND. BS 500B+7: L=0.650; W=0.400; Y=0.013. 3RD. BS 500B+10: L=0.550; W=450; Y=0.008. 4TH. BS 500C: L=0.800; W=0.450; Y=0.010. ORIGINAL PART THICKNESS PER SRM 53-30-53-01-2 IS 0.040' WITH A MAX DAMAGE REMOVAL AT 10% OF MATERIAL THICKNESS THEREFORE ALL BLEND AREAS ARE OUT OF LIMITS PER SRM 53-00-53-1A-2 STEPS 2. D. (1); 4. A. (2) (A) DETAIL D. <BR><BR>TOOL USED: DIAL DEPTH GAGE<BR>ID:ATS2678<BR>SN:UNKNOWN<BR>DATE:04/2022<BR>DUE:04/2023;[02] VERIFIED APPLICABILITY OF SRM 53-00-53-1A-2. VERIFIED DAMAGE IS OUT OF LIMITS AS NOTED IN CORRECTIVE ACTION ITEM 1.;[03] UPDATED MESURMENT BLOCK;[04] UPDATED MEASUREMENTS;[05] UPDATED PART NUMBER;[06] RECEIVED FCB FLOOR TO SIDE WALL SUPPORT ANGLE PART NUMBER 143A7501U186 BS 500A TO 500D RBL 23; LOCATED AND DRILLED THE NEW SUPPORT ANGLE IASW SRM 51-40-05-0G-0 AND DWG#143A7500;

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