Service difficulty report · Angle · Boeing 7378H4

Difficulty date
January 26, 2023
Submitted
March 13, 2023
Operation
Air carrier
Aircraft
N8525S
Make and model
Boeing 7378H4
Aircraft serial
36949
Aircraft time
20,253 hours, 9,749 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 LEFT TRANSITION ANGLE HAS AREAS OF CORROSION AROUND FASTNER HOLES STA 727G -727I.<[01] REMOVED AREAS OF CORROSION LEFT TRANSITION ANGLE BETWEEN STA 727G-727I. FOUND TO BE OUT OF LIMITS PER SRM 53-00-53;[02] FOUND TO BE OUT OF LIMITS PICTURE HAS BEEN ADDED.;[03] REMOVED LEFT TRANSITION ANGLE FROM STA 727 - 847 PER SRM 51-40-02 TO BE REPLACED WITH NEW;[04] REMOVED AREAS OF CORROSION LEFT TRANSITION ANGLE BETWEEN STA 727G-727I. FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2;[05] CORRECTED REFERENCE;[06] LOCATED AND DRILLED NEW TRANSITION ANGLE FROM STATEION 787+10 TO 847. ALL WORK REFERENCE TO SRM 51-40-05 AND 53-00-53-2R-5;[07] LOCATED AND DRILLED NEW TRANSITION ANGLE FROM STA 727F+11 TO STA 787+10 AND SPLICES AT BOTH LOCATIONS PER SRM 53-00-53-2R-5.;[08] VERIFIED THE LOCATING AND DRILLING OF NEW LH TRANSITION ANGLE FROM STA. 727F+11' THROUGH 847 ON CORRECTIVE ACTION STEPS 6 AND 7 REFERENCING SRM 51-40-05 AND SRM 53-00-53-2R-5.;[09] TREATED AND PRIMED REPAIR PARTS PER SRM 53-00-53-2R-5.;[10] VERIFIED CORRECTIVE ACTION #9: REPAIR PARTS TREATED AND PRIMED: INSTALLED SPLICE PLATES PER SRM 53-00-53-2R-5 INSTALLED NUT PLATES ON REPLACEMENT TRANSITION ANGEL STA. 727F+11? TO STA. 847 IAW SRM 51-40-10.REPLACED LEFT TRANSITION ANGLE FROM STA 727 - 847 PER SRM 51-40-02

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