Service difficulty report · Beam · Boeing 747409

Difficulty date
November 20, 2025
Submitted
November 21, 2025
Operation
Air carrier
Aircraft
N249BA
Make and model
Boeing 747409
Aircraft serial
24309
Aircraft time
88,550 hours, 16,833 cycles
Part
Beam
Condition
Corroded
Location
Zone 500
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- BEAM, LT WING INBD L/E CAVITY LOWER PNL FWD SUPPORT BEAM INNER FACE, ILES 942. BLENDED OUT THE DAMAGED AREA IAW SRM 51-10-02-0G-0 REV 61. PERFORMED NDT INSPECTION, REFER TO JOB CARD ATTACHING SHEET 0462386. MEASURED REWORK AREA LENGTH = 1.8", WIDTH = 1", DEPTH = 0.005" ALLOWABLE IAW SRM 57-41-13-1A-1, FIG 101, DETAIL V, REV 61. APPLY PROTECTIVE COATING IAW SRM 51-20-01-0G-0, REV 61.