Service difficulty report · Baffle · Boeing 7378H4

Difficulty date
April 12, 2022
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N8684F
Make and model
Boeing 7378H4
Aircraft serial
36653
Aircraft time
20,246 hours, 9,455 cycles
Part
Baffle
Part number
146A750512
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

A-061 DOT 033 AFT CARGO PIT BAFFLE UNDER R/H Z ANGLE BETWEEN STA 747 AND STA 767 RBL 23 WL 155 CORRODED AT NUTPLATES HOLES / [01] REMOVED DAMAGE PART IAW SRM 51-40-02-0G-0;[02] REMOVED CORROSION ON DAMAGE PARTS IAW SRM 51-10-02-0G-0 ITEM 15;[03] EVALUATED ALLOWABLE LIMITS: .040 ORIGINAL 'T' .025 REMAINING .015 LOSS FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2 TOOL USED MICROMETER#AAR24510 DUE 01-25-23;[04] VERIFIED STEPS 1-3 ARE COMPLETE;[05] VERIFIED ITEMS 1 THROUGH 4;[06] ADDED P/N TO MEASUREMENTS TABLE;[07] VERIFIED NEW BAFFLE (SPLICE) P/N146A7505-12 WN 14818 IAW DWG 146A7500 REV:-;[08] VERIFIED STEPS 6 AND 7;[09] LOCATED AND DRILL HOLES ON NEW SPLICE IAW SRM 51-40-05-0G-0;[10] VERIFIED STEP 9.<BR>OK TO INSTALL REPLACEMENT PART.;[11] INSTALLED NEW SPLICE ( BAFFLE) IAW SRM 51-40-02-0G-0 AND DWG 146A7500 REV:-;[12] VERIFIED INSTALLATION OF PART IN STEP 11.<BR>OK TO CIC AREA.;[13] APPLIED CIC AREA IAW AMM 51-21-91-620-802;[14] VERIFIED STEP 13. <BR>VERIFIED REPLACEMENT OF SPLICE. <BR>AUDIT C/W.;[15] CHANGED CORROSION LEVEL

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