Service difficulty report · Doubler · Urocop EC130B4

Difficulty date
August 31, 2026
Submitted
August 31, 2026
Operation
General aviation
Aircraft
N151LN
Make and model
Urocop EC130B4
Aircraft serial
4114
Aircraft time
6,540 hours, 23,964 cycles
Part
Doubler
Part number
350A21106225
Condition
Corroded
Location
Zone 100
Part time
6,540 hours, 23,964 cycles
Stage of operation
IN
How discovered
V
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 DAMAGE WAS DISCOVERED ON THE FORWARD FUEL TANK SADDLE DOUBLER. REPLACEMENT PART WAS UNAVAILABLE WITHIN THE REQUIRED RETURN-TO-SERVICE SCHEDULE. A REPLACEMENT FORWARD FUEL TANK SADDLE DOUBLER, WAS FABRICATED LOCALLY USING THE DISCREPANT PART AS A GUIDE IN ACCORDANCE WITH EA 17-5300-EA-5768 REV. -, AND IS SUBSTANTIATED BY FAA FORM 8110-3, WITH DER SPECIFIC SEQUENCE 26RL029AM. THE REPLACEMENT PART WAS FABRICATED FROM 0.063-INCH 2024-T3 BARE ALUMINUM SHEET CONFORMING TO AMS-QQ-A-250/4. FABRICATED PART WAS VISUALLY INSPECTED AT 10X MAGNIFICATION AND FOUND FREE OF DEFECTS OR DAMAGE. SURFACE PROTECTION WAS APPLIED USING ALODINE, EPOXY PRIMER, AND PAINT IN ACCORDANCE WITH THE EC130 MTM AND AC 43.13-1B.

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