SDR UPS04443233

Service difficulty report · Skin · Boeing 747200

Difficulty date: September 28, 2004
Submitted: October 4, 2004
Operation: Air carrier
Aircraft: N523UP
Make and model: Boeing 747200
Aircraft serial: 22381
Aircraft time: 73,260 hours, 15,099 cycles
System (JASC): 5414 · Nacelle/Pylon, Plate/Skin
Part: Skin
Condition: Cracked
Location: Nr 2 Pylon
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: AD, NR 2 PYLON UPPER LINK ATTACH LUG AREA, 1EA FASTENER HOLE CRACK FOUND ON NR 2ND LAYER, APPROX 0.060 INCH IN LENGTH, RUNNING O/B AS MARKED (BS 221 TO 221, WBL L470 TO L470). TEMPORARY REPAIR CARRIED OUT PER EO NR B747-5430-21111-A. STOP HOLE DRILLED AND NDT CONFIRM CRACK FREE.

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