SDR UPS04443097

Service difficulty report · Longeron · Boeing 747212B

Difficulty date: August 14, 2004
Submitted: September 13, 2004
Operation: Air carrier
Aircraft: N520UP
Make and model: Boeing 747212B
Aircraft serial: 21943
Aircraft time: 77,131 hours, 17,128 cycles
System (JASC): 5313 · Fuselage Main, Longeron/Stringer
Part: Longeron
Condition: Corroded
Location: Rt Mlg
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:C, RT MLG WW OVERWING LONGERON UPPER SURFACE CORROSION REVEALED AT STA 1335, RBL 126. CORROSION REMOVED IAW SRM 51-10-01. CORROSION BLEND OUT 0.230 X 3.5 X 3.5 INCH, EXCEED SRM 53-10-01 FIG 1 LIMITS, LONGERON REPAIRED PER HX RS R53-41-35194 & UPS EO B747-5310-21016-A. CIC APPLIED IAW EO M5100-2780-E.

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