Service difficulty report · Ring · Boeing 74747UF

Difficulty date
January 20, 2013
Submitted
February 18, 2013
Operation
Air carrier
Aircraft
N412MC
Make and model
Boeing 74747UF
Aircraft serial
30559
Aircraft time
56,660 hours, 8,522 cycles
Engine
Ge CF680C2B1F
Part
Ring
Condition
Cracked
Location
Nr 4 Engine
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 4 ENG RT 'C' DUCT AFT CASCADE SUPPORT RING FOUND CRACKED AT R8 CASCADE VANE NUT PLATE. REPAIRED AS PER EO 1978A067.

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