Service difficulty report · Skin · Boeing 747409

Difficulty date
December 2, 2024
Submitted
December 4, 2024
Operation
Air carrier
Aircraft
N780BA
Make and model
Boeing 747409
Aircraft serial
24310
Aircraft time
90,839 hours, 17,060 cycles
Part
Skin
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 - SKIN, L/H WING L/E CAVITY FRONT SPAR LOWER SKIN, ILES 949.(<P>1. REMOVED THE EFFECTED FASTENERS IAW SRM 51-40-02-0G-0, REV.58. 2. BLENDED OUT THE DAMAGE AREA IAW SRM 57-20-01-1A-2, REV. 58. 3. PFM NDT INSP REFER TO JOB CARD ATTACHING NO. 0428990 & DATA SHEET NO.10247099-1. 4. MEASURED REWORKED AREA DEPTH 0.113", LENGTH 5", WIDTH 2.5", IT WAS ALLOWABLE IAW SRM 57-20-01-1A-2, CHART II, REV.59. 5. INSTALLED FASTENERS IAW. SRM 51-40-02-0G-0 REV. 59 & DWG NO. 65B10729, SH 3, REV.W. 6. CONDITION CHECK NORMAL AND JOB COMPLETED.</P>)