SDR FDEA201002090369

Service difficulty report · Skin · Boeing 757204

Difficulty date: February 9, 2010
Submitted: February 9, 2010
Operation: Air carrier
Aircraft: N924FD
Make and model: Boeing 757204
Aircraft serial: 26267
Aircraft time: 58,915 hours, 21,446 cycles
System (JASC): 5414 · Nacelle/Pylon, Plate/Skin
Part: Skin
Part number: 311N5046Y53
Part serial: 780363
Condition: Corroded
Location: Nr 2 Pylon
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

NR 2 PYLON TORQUE BOX ASSY RT AND LT SIDE INNER SKIN SURFACE HAVE CORROSION RUNING DOWN THE LOWER CHORD. INSTALLED NEW SKIN PN 311N5046Y53, IAW SRM 51-40-02, DWG 311N5002, AND EO F-5450-7-5003, P5, CORROSION ON SKIN BLENDED OUT OF LIMITS PER SRM 54-40-02. REPLACED SKIN IAW SRM 51-40-02 REPAIR IS CLASSIFIED AS MAJOR REPAIR.