Service difficulty report · Skin · Boeing 747409

Difficulty date
December 6, 2015
Submitted
December 10, 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
Rt 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

REPAIR CORROSION ON THE WING INTER SPAR LOWER SKIN, PANEL NR 3, LOWER SIDE NEAR FSS 1305. BLENDED OUT THE DAMAGED AREA, MEASURED & REWORKED. THE DEEPEST THICKNESS WAS 0.216 INCHES, WHICH WAS NOT ALLOWABLE IAW SRM 57-20-01, ALLOWABLE DAMAGES FIG 101 CHART I REV 32. DETAIL DATA REF TO IC ATTACHING SHEET NR 0069558 & NRC DATA SHEET CONTROL NR 050079 & CONTACT PE TO DO FURTHER ACTIONS. PEM EI NR T2015 57B-2573 REV 1 JOB COMPLETED & CONDITION CHECKED NORMAL.