Service difficulty report · Skin · Boeing 75721B

Difficulty date
March 31, 2009
Submitted
August 20, 2009
Operation
Air carrier
Aircraft
N933FD
Make and model
Boeing 75721B
Aircraft serial
24330
Aircraft time
52,447 hours, 30,243 cycles
Part
Skin
Part number
311N5046Y53
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 LT SIDE SKIN EXFOLIATED AROUND FASTENERS APPROX BETWEEN P/P STA 136 AND 140, AND 1 INCH ABOVE LWR SPAR. CORROSION ON NR 2 PYLON SKIN FOUND EXCEEDED ALLOWABLE DAMAGE LIMITS. PYLON SKIN REMOVED AND REPLACED IAW SRM 51-40-02 REV 97. REPAIR IS CLASSIFIED AS MAJOR IAW 6-2-100 CRITERIA.

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