Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
October 10, 2022
Submitted
October 28, 2022
Operation
Air carrier
Aircraft
N8507C
Make and model
Boeing 7378H4
Aircraft serial
41531
Aircraft time
20,008 hours, 9,579 cycles
Part
Attach Angle
Condition
Corroded
Location
Zn 100 Fus Lower
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

AFT CARGO BAY LOWER ATTACH ANGLE COMMON TO SHIELD HAS CORROSION AROUND NUT PLATE HOLE BS767+2 RBL21 WL156 / [01] UPDATED MEASUREMENT TABLE FOR PICTURE OF CORROSION ATTACHED;[02] CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VERIFIED PICTURE OF CORROSION IS ATTACHED;[04] REMOVED AFT CARGO BAY LOWER ATTACH ANGLE AT BS 767 TO BS 787 RBL 21 WL 156 PER SRM 51-40-02-0G-0;[05] LOCATED AND DRILLED NEW AFT CARGO BAY LOWER ATTACH ANGLE BS 767 TO BS 787 PER SRM 51-40-05-0G-0 AND DWG 146A8123. OK TO INSTALL ANGLE;[06] VERIFIED CORRECTIVE ACTION 5.<BR>OK TO INSTALL;[07] INSTALLED AFT CARGO BAY LOWER ATTACH ANGLE AT BS 767 TO BS 787 PER SRM 51-40-02-0G-0 AND DWG 146A8123;[08] VERIFIED CORRECTIVE ACTION STEP 7.;[09] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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