SDR UIEA2011020700042

Service difficulty report · Skin · Boeing 747341

Difficulty date: February 7, 2011
Submitted: February 23, 2011
Operation: Air carrier
Aircraft: N355MC
Make and model: Boeing 747341
Aircraft serial: 23395
Aircraft time: 74,043 hours, 14,432 cycles
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Corroded
Location: Bs 2195 S30l
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

FUSELAGE STA 2195, ON S30L, FOUND CORROSION 2" BY 1" AND SKIN CRACKED ACROSS FASTERNER 1.5". TO PROVIDE ACCESS TO DETERMINE EXTEND OF DAMAGED AND CARRY OUT REPAIR. SKIN TRIMED OUT TO COMPLETELY REMOVE CORROSION DAMAGE. DIMENSION OF TRIM OUT L= 4.25" X W = 3.25", SKIN REPAIRED AS PER SRM 53-30-03. S30L AT BS 2195 ALSO FOUND TO HAVE CORROSION DAMTE. CORRODED SECTION OF STRINGER TRIMED OUT. 20" LENGTH OF STRINGER SECTION REPLACED AND REPAIRED AS PER REPAIR.