SDR UPS06447397

Service difficulty report · Skin · Boeing 747121

Difficulty date: July 22, 2006
Submitted: July 26, 2006
Operation: Air carrier
Aircraft: N681UP
Make and model: Boeing 747121
Aircraft serial: 19661
System (JASC): 5414 · Nacelle/Pylon, Plate/Skin
Part: Skin
Condition: Worn
Location: Nr 4 Nacelle
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

NR 4 PYLON INSIDE VERT WEB INBD SKIN WORN THROUGH AT AFT END PEELING AND MISSING AT FWD END. DRILLED OFF INNER STAINLESS AND TRIMMED OUT DAMAGE SKIN 1" BY 9.5". DAMAGE REGLUED. TRIMMED OUT ADDITIONAL DAMAGE. FABRICATED AND DRILLED DOUBLER AND FIRE SHIELD PER SRM 54-30-03 FIG 36. INSTALLED REPAIR PARTS FILLER, DOUBLER AND INNER LINER PER ABOVE REFERENCE.