Service difficulty report · Support Beam · Boeing 747412

Difficulty date
September 23, 2024
Submitted
September 24, 2024
Operation
Air carrier
Aircraft
N471MC
Make and model
Boeing 747412
Aircraft serial
26557
Aircraft time
92,959 hours, 15,218 cycles
Part
Support Beam
Part number
65B0787255
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 DAMAGES ON THE UPPER CHORD OF LH WING FIXED TRAILING EDGE RIB AT ILES 994.50.(<P>1. REMOVED THE AFFECTED FASTENERS IAW SRM 51-40-02-0G-0 REV=60. 2. BLEND OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV=60. 3. PFM NDT INSP REFER TO JOB CARD ATTACHING SHEET 0458453 AND DATA SHEET 10043936-1. 4. ACCOMPLISHED EI T2024A57M-2144-1 REV=1. 5. INSTALLED FABRICATED PART IAW SRM 51-40-02-0G-0 REV=60 AND DWG 65B07872, SH=3 REV=D AND 65B07895 SH=10 REV=D 6. JOB COMPLETED AND CONDITION CHECK NORMAL.