Service difficulty report · Skin · Boeing 75724APF

Difficulty date
July 21, 2022
Submitted
August 8, 2022
Operation
Air carrier
Aircraft
N453UP
Make and model
Boeing 75724APF
Aircraft serial
25474
Aircraft time
36,429 hours, 21,048 cycles
Part
Skin
Part number
311N504662
Condition
Corroded
Location
#1 Ib Pylon Skin
Stage of operation
IN
How discovered
9
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

INSPECTION TYPE:CK14#1 PYLON AFT SKIN INNER DOUBLER HAD 2 LOCATIONS OF CORROSION DAMAGE. THE FWD CORROSION LOCATION IS LOCATED BETWEEN PP STA 153 AND PP STA 160. THE AFT CORROSION LOCATION IS LOCATED BETWEEN PP STA 182.2 AND PP STA 185.35. BOTH LOCATIONS ARE OUT OF LIMITS PER SRM 54-50-01-1A-1REPAIRED PYLON SKIN IAW EO B757-5430-84351-A AND VTMAE 757-5450-27-A2991

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