SDR UIEA2019070504683

Service difficulty report · Lug · Boeing 74747UF

Difficulty date: July 7, 2019
Submitted: July 9, 2019
Operation: Air carrier
Aircraft: N475MC
Make and model: Boeing 74747UF
Aircraft serial: 29252
Aircraft time: 81,980 hours, 15,111 cycles
System (JASC): 5420 · Nacelle/Pylon Miscellaneous Structure
Part: Lug
Condition: Defective
Location: Nr 4 Pylon
Stage of operation: IN
How discovered: V
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

WHILE CARRYING OUT #4 PYLON MID-PIVOT FITTING MODIFICATION, FOUND #1 LUG BORE HOLE NOT CONCENTRIC(<P>LUG BORE HOLE NOT CONCENTRIC AT THE NOTED LOCATION REWORKED & REPAIR CARRIED OUT AS PER SASCO EN # 309-19, REV 0. REPAIR CLASSIFIED AS " MAJOR REPAIR" AS PER GMM CHAPTER 5.3.22, VERSION 19, DATED 23-JAN-2019.<BR /></P>)

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