Service difficulty report · Shield · Boeing 7378H4

Difficulty date
April 29, 2022
Submitted
May 12, 2022
Operation
Air carrier
Aircraft
N8685B
Make and model
Boeing 7378H4
Aircraft serial
36723
Aircraft time
20,280 hours, 9,431 cycles
Part
Shield
Part number
146A812712
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

DOT#66-186 AFT PIT FWD SHIELD CORRODED STA 767+7 RBL 22 WL 156 / [01] REMOVED CORROSION FROM FWD SHIELD; ORIG T= .050' LOSS OF .008' REM T= .042' FOUND TO BE OUT OF LIMITS IAW SRM 53-60-151A-1 TOOLING INFO AAR 32351 CAL DUE 12/12/22;[02] VERIFIED STEP 1;[03] REMOVED FWD SHIELD IAW SRM 51-40-02-0G-0;[04] VERIFIED NEW FWD SHIELD AS P/N 146A8172-12 ATAG WN14463 IAW DWG 146A0081 REV A;[05] VERIFIED NEW PART;[06] LOCATED AND DRILLED NEW SHIELD IAW SRM 51-40-05-0G-0; DWG 146A0081 REV A;[07] VERIFIED STEP 6<BR>OK TO INSTALL<BR>OK TO CIC;[08] INSTALLED NEW AFT PIT FWD SHIELD I/A/W B737-800 SRM 51-40-02-0G-0 AND BOEING DWG 146A0081 REV. A;[09] VERIFIED STEP 8;[10] REMOVED CORROSION FROM FWD SHIELD; ORIG T= .050' LOSS OF .008' REM T= .042' FOUND TO BE OUT OF LIMITS IAW SRM 53-60-151A-1 TOOLING INFO AAR 32351 CAL DUE 12/12/22; REMOVED FWD SHIELD IAW SRM 51-40-02-0G-0; INSTALLED NEW AFT PIT FWD SHIELD I/A/W B737-800 SRM 51-40-02-0G-0 AND BOEING DWG 146A0081 REV. A;[11] VERIFIED STEP 10;[12] JOB COMPLETE; AUDIT C/W

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