Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
June 21, 2022
Submitted
July 28, 2022
Operation
Air carrier
Aircraft
N486WN
Make and model
Boeing 7377H4
Aircraft serial
33852
Aircraft time
59,624 hours, 35,506 cycles
Part
Intercostal
Part number
146A812319
Condition
Corroded
Location
Aft Cargo Bay
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 AFT CARGO BAY INTERCOSTAL AT RBL 19 BS 767+6. / [01] VERIFIED APPLICABILITY PER SRM 53-60-15-1A-1<BR>REMOVED CORROSION ON AFT CARGO BAY INTERCOSTAL RBL 19 BS 767+6. REWORKED AREA L=3';W=1.3';D=0.009' ORIGINAL THICKNESS 0.050'. FOUND TO BE OUT OF LIMIT IAW SRM 53-60-15-1A-1 STEP4G(2)(B) FIG 103.<BR>TOOL USED ID:ATS1672<BR>S/N:65092939<BR>DUE:03/2023;[02] UPDATED MEASUREMENTS;[03] VERIFIED CORRECTIVE ACTION 1 AND MEASUREMENT TABLE.;[04] REMOVED ON AFT CARGO BAY INTERCOSTAL AT RBL 19 BS 767 TO BS 787 IAW SRM 51-40-02;[05] RECEIVED ON AFT CARGO BAY INTERCOSTAL NEW AT RBL 19 BS 767 TO BS 787 ITEM 146A8123-19 PO#865464. LOCATED AND DRILLED IAW SRM 51-40-05 AND DWG 146A8123.<BR>OK TO INSTALL;[06] PART NUMBER INFO;[07] VERIFIED CORRECTIVE ACTIONS 4-6. VERIFIED P/N UPDATE IN MEASUREMENT TABLE; OK TO INSTALL GIVEN;[08] INSTALLED ON AFT CARGO BAY INTERCOSTAL AT RBL 19 BS 767 TO BS 787 IAW SRM 51-40-02 AND DWG146A0081;[09] VERIFIED CORRECTIVE ACTION 8;[10] VERIFIED ALL WORK COMPLETE

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