SDR 98ZZZM478

Service difficulty report · Skin · Boeing 747257B

Difficulty date: May 19, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N303TW
Make and model: Boeing 747257B
Aircraft serial: 20116
System (JASC): 5414 · Nacelle/Pylon, Plate/Skin
Part: Skin
Condition: Cracked
Location: Nr 1 Pylon
Stage of operation: IN
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

DURING C-CHECK INSPECTION DISCOVERED CRACKS ON THE INBOARD SIDE OF THE NR 1 PYLON SKIN AT THE SLOT SEAL POSITION, NACELLE STATION 180, WL 152. REPAIRED BY TRIMMING OUT THE CRACK IN THE SKIN, HFEC INSPECTING, FABRICATING AND INSTALLING REPAIR FILLER AND DOUBLER. REPAIRED IAW EVERGREEN AIR CENTER, ENGINEERING CHANGE/REPAIR AUTHORIZATION NR N303TW-54-015-EAC.