Service difficulty report · Ring Assembly · Boeing 73786N

Difficulty date
June 5, 2012
Submitted
June 7, 2012
Operation
Air carrier
Filed by
Z6WR336Y
Spirit Aerosystems Inc
Make and model
Boeing 73786N
Aircraft serial
28578
Aircraft time
12,516 hours, 7,924 cycles
Engine
Ge CFM567B24
Part
Ring Assembly
Part number
315A22255
Condition
Worn
Location
Thrust Reverser
Component
Thrust Reverser · Boeing · 737800
Component part number
315A229593
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

ONE BACB30LE6K29 BOLT COMMON TO THE AFT HOLE OF THE ,315A2222-5 CASCADE SUPPORT RING, AND THE ,315A2310-1 LATCH BEAM, WAS VISUALLY FOUND TO BE LOOSE. AFTER BOLT REMOVAL, 2EA HOLES FOR 2EA, BACB30LE6K29 BOLTS, MEASURE; FWD HOLE C/T, 315A2310-1 BEAM = .3762 WITH .005 DEEP RIFLING IN IT’S ID SHOULD BE .375/.379. FWD HOLE C/T 315A2225-5 RING = .3774 WITH .003 DEEP RIFLING IN IT’S ID SHOULD BE .375/.379. AFT HOLE C/T 315A2310-1 BEAM = .4073 X .4152 WITH .005 DEEP RIFLING IN IT’S ID SHOULD BE .404/.416. AFT HOLE C/T, 315A2225-5 RING = .3741 X .3928 WITH .003 DEEP RIFLING IN IT’S ID SHOULD BE .375/.379.

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