Service difficulty report · Doubler · Boeing 74748EF

Difficulty date
October 9, 2026
Submitted
October 10, 2026
Operation
Air carrier
Aircraft
N419MC
Make and model
Boeing 74748EF
Aircraft serial
28367
Aircraft time
121,274 hours, 20,941 cycles
Part
Doubler
Condition
Misinstalled
Location
Zone 200
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

SEC 42 LAP JOINT INSP OF EXISTING DOUBLERS (02 EA) ON S39L, STA 940-960 AND S39R, STA 920-960; FOUND THE REPAIR NOT CONFIRMED TO SRM 53-00-01, REPAIR 10,12 OR 16. BODY FAIRING PANEL REMOVED & REINSTALLED IAW AMM 53-51-01-004-001, REV 117 & AMM 53-51-01-404-004, REV 117. LFEC CARRIED OUT ON PRODUCTION DOUBLER AS PER NDTM PART 6, 53-30-00 PROC 5 REV 182. NO CRACKS FOUND IAW EN 3835-26 REV. 0. REPAIR CLASSIFIED AS "MAJOR" AND CATEGORIZED AS "CATEGORY B" PERMANENT REPAIR.

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