Service difficulty report · Angle · Boeing 7378H4

Difficulty date
October 18, 2024
Submitted
November 21, 2024
Operation
Air carrier
Aircraft
N8509U
Make and model
Boeing 7378H4
Aircraft serial
36925
Aircraft time
26,850 hours, 13,267 cycles
Part
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 R/H TRANSITION ANGLE HAS CORROSION AT N/P HOLES ON UNDERSIDE STA.767-794. MRKD<[01] BLENDED CORROSION AND FOUND TO BE OUT OF LIMIT IN REFERENCE TO SRM 53-00-53.;[02] REMOVED AFT CARGO R/H TRANSITION ANGLE STA.767-794 PER SRM 51-40-02.;[03] DRILLED NEW AFT CARGO R/H TRANSITION ANGLE STA.767 TO STA.794 PER SRM 51-40-05.;[04] INSPECTION C/W FOR CA 1;2; AND 3.<BR>OK TO INSTALL NEW PART.;[05] INSTALLED NEW AFT CARGO R/H TRANSITION ANGLE STA.767-794 PER SRM 51-40-02.;[06] BLENDED CORROSION AND FOUND TO BE OUT OF LIMIT PER SRM 53-00-53-1A-1.;[07] INSPECTION COMPLETE ON CORRECTIVE ACTION #5 FOR INSTALLATION OF AFT CARGO FWD SHIELD ASSEMBLY/ TRANSITION ANGLE. <BR><BR>INSPECTION VERIFIED THAT CORRECTIVE ACTION #6 CORRECTED THE REFERENCE USED IN CORRECTIVE ACTION #1 AS THE ORIGINAL WAS INCOMPLETE.

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