Service difficulty report · Skin · Boeing 7572B7

Difficulty date
December 18, 2009
Submitted
December 18, 2009
Operation
Air carrier
Aircraft
N909FD
Make and model
Boeing 7572B7
Aircraft serial
27200
Aircraft time
52,338 hours, 21,726 cycles
Part
Skin
Part number
311N504633
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 INBD SIDE SKIN HAS CORROSION AT STA 174.30 INSIDE FWD OF FWD BULKHEAD. BLENDED CORROSION ON NR 2 PLYON SKIN LOCATED AT PP STA 174.30 IAW SRM 54-50-01DETAIL II, III, AND IV. ORIGINAL SKIN THICKNESS 0.090. DIMENSION OF BLEND OUT IS .5 X .5 X .014. REMAINING MATERIAL FOUND TO BE OUT OF LIMITS IAW SRM 54-50-01 DETAIL II, III, AND IV. COMPLIED WITH EA NR F5450-131142. TREATED AND PRIMIED IAW SRM 51-20-01. CONSIDERED MINOR REPAIR IAW EA F5450-131142 NACELLES/PYLON NR 2 ENG STRUT INBD SKIN CORROSION REPAIR. SKIN PN 311N5046-33.

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