Service difficulty report · Support Bracket · Boeing 7377CT

Difficulty date
July 16, 2021
Submitted
September 2, 2021
Operation
Air carrier
Aircraft
N7821L
Make and model
Boeing 7377CT
Aircraft serial
32748
Aircraft time
58,592 hours, 29,340 cycles
Part
Support Bracket
Condition
Corroded
Location
Rt Nacelle
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, RT STRUT UPPER SURFACE NAC STA 190 12 O'CLOCK GROUND GD3942ST STRAP SUPPORT BRACKET CORRODED. ; / [01] REMOVED SUPPORT BRACKET AT RIGHT STRUT UPPER SURFACE NAC STA. 190 12 O'CLOCK GROUND GD 3942 IAW B737-700 SRM 51-40-02-0G-0.; [02] REMOVED LIGHT SURFACE CORROSION SUPPORT BRACKET .002' MATERIAL REMOVED. MATERIAL ORIGINAL .063' REMAINING MATERIAL .061 . NO SIGNIFICANT LOSS.TOOL USED B/C 173174 PER REFERENCE SRM.B737/-700 51-10-02-0G-0; [03] VERIFIED STEP 1.; [04] CHECKED STEP 2 ; BUT CORROSION IS NOT COMPLETED REMOVED. NEED MORE REWORK; [05] REMOVED CORROSION AT SUPPORT BRACKET MAT LOSS .015' FOUND OUT OF LIMITS PER SRM 54-50-71-1A-1 TOOL USED B/C 173174; [06] VERIFIED STEP 5.; [07] OK TO INSTALL NEW BRACKET; [08] INSTALLED NEW BRACKET REF: SRM 51-40-02-0G-0; [09] RESISTANCE TEST PROCEDURES WILL BE ACCOMPLISH ON TTG8Q005TXU3; [10] VERIFIED STEPS 8 & 9

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