Service difficulty report · Intercostal · Boeing 737

Difficulty date
August 11, 2022
Submitted
September 7, 2022
Operation
Air carrier
Aircraft
N8648A
Make and model
Boeing 737
Aircraft serial
42531
Aircraft time
27,511 hours, 12,724 cycles
Part
Intercostal
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 NUT PLATE BRACKET ATTACH TO LOWER SIDE OF INTERCOSTAL AT RBL 19 BS 787+4. / [01] CORROSION ON NUTPLATE STRAP WAS FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM.;[02] VERIFIED ITEM 1 CORRECTIVE ACTIONS.;[03] UPDATED MEASUREMENT TABLE.;[04] VERIFIED CHANGED PRIMARY TO 2-SDRY AND CORROSION FROM LEVEL 2; TO LEVEL 1.;[05] REMOVED DAMAGED AFT CARGO BAY NUT PLATE BRACKET AT BS787- BS793 RBL19 PER SRM 51-40-02-0G-0;[06] LOCATED AND DRILLED NEW AFT CARGO BAY NUT PLATE BRACKET AT BS787- BS793 RBL19 PER SRM 51-40-05-0G-0 AND DWG 146A0081.<BR>OK TO INSTALL;[07] VERIFIED CORRECTIVE ACTION #6<BR>OK TO INSTALL GIVEN;[08] INSTALLED AFT CARGO BAY NUT PLATE BRACKET AT BS787- BS793 RBL19 PER SRM 51-40-02-0G-0 AND DWG 146A0081.;[09] VERIFIED CORRECTIVE ACTION #8<BR>MEASUREMENT TABLE VERIFIED