Service difficulty report · Skin · Boeing 747409

Difficulty date
December 6, 2015
Submitted
December 9, 2015
Operation
Air carrier
Aircraft
N780BA
Make and model
Boeing 747409
Aircraft serial
24310
Aircraft time
76,891 hours, 14,922 cycles
Part
Skin
Condition
Corroded
Location
Lt Wing
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, SKIN, LT WING UPPER SKIN AT WBL 849. BLEND OUT THE DAMAGED AREA & MEASURED REWORK AREA LX WXD = 1.1" X 0.9" X 0.007" WHICH IS WITHIN ALLOWABLE LIMIT IAW SRM 57-20-01-1A-1 FIG 101 DETAIL II REV 32. DETAIL DATA REA TO J/C ATTACHING SHEET NO. 0069538 & APPLY PROTECTIVE TREATMENT IAW SRM 51-20-01 REV 32. 4. JOB COMPLETED & CONDITIION * CHECK .