SDR UIEA200800025

Service difficulty report · Skin · Boeing 747243B

Difficulty date: February 2, 2008
Submitted: February 21, 2008
Operation: Air carrier
Aircraft: N540MC
Make and model: Boeing 747243B
Aircraft serial: 22508
Aircraft time: 101,345 hours, 17,658 cycles
System (JASC): 5753 · Trailing Edge Flaps
Part: Skin
Part number: 65B019709
Part serial: 000391
Condition: Corroded
Location: Te Flap
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

LT WING O/B FLAP, AFT FLAP UPPER SKIN ON PANEL, AN AREA OF 5.0 INCH BY 2.0 INCH IS CORRODED AT WBL 625 LT. PERMANENT REPAIR ACCOMPLISHED AS PER B747-200 SRM 51-40-09, FIG 5, SHEETS 7 AND 9, PREPREG LAYUP 250 DEGREES F CURE PER SRM 51-40-12. REF: ATLAS AIR EO 4757A416.