Service difficulty report · Fitting · Boeing 7377H4

Difficulty date
July 20, 2012
Submitted
July 20, 2012
Operation
Air carrier
Filed by
Z6WR336Y
Spirit Aerosystems Inc
Aircraft
N713SW
Make and model
Boeing 7377H4
Aircraft serial
27847
Aircraft time
50,474 hours, 30,011 cycles
Engine
Cfmint CFM567B22
Part
Fitting
Part number
315A23111
Condition
Gouged
Location
Thrust Reverser
Part time
50,474 hours, 30,011 cycles
Component
Thrust Reverser · Boeing · 737700
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

REF CMM 78-31-37 REV 024 01JUL2012 FIG 19. THE OUTBOARD SURFACE OF THE 315A2311-1 HINGE BEAM (DETAIL PART OF THE 315A2310-1 FITTING ASSY) HAS AN AREA OF MATERIAL WEAR LOCATED 13.0" FWD FROM AFT END OF PART MEASURING 1.20" LONG .21" WIDE. EDDY CURRENT INSPECTION PER NDT MANUAL WAS PERFORMED AROUND THE PERIMETER OF THE MATERIAL WEAR AND THE SURFACE OPPOSITE OF THE MATERIAL WEAR. NO CRACK-LIKE INDICATIONS FOUND. ULTRASONIC THICKNESS REVEALS A .100 NOMINAL THICKNESS OUTSIDE OF MATERIAL WEAR AND .034 MINIMUM REMAINING THICKNESS AT THE BOTTOM OF THE WEAR.

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