SDR FDEA201710152964

Service difficulty report · Frame · Boeing 777FS2

Difficulty date: October 15, 2017
Submitted: October 24, 2017
Operation: Air carrier
Aircraft: N855FD
Make and model: Boeing 777FS2
Aircraft serial: 37726
Aircraft time: 29,194 hours, 4,495 cycles
System (JASC): 5410 · Nacelle/Pylon, Main Frame
Part: Frame
Condition: Cracked
Location: Nr 2 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 2 ENGINE PYLON HAS AN INTERNAL FRAME CRACKED. CRACK LOCATED INBOARD SIDE NAC STA 325.3, JUST ABOVE AFT ACCESS DOOR FOR AFT ENGINE MOUNT BOLTS. CRACK CONFIRMED WITH HFEC AND MEASURES APPROXIMATELY 2.5 INCH. FABRICATED A DOUBLER. CLEANED PART , PRIMED, AND INSTALLED.

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