Service difficulty report · Rib · Gulstm GIV

Difficulty date
March 12, 2012
Submitted
April 18, 2012
Operation
Air carrier
Aircraft
N1
Make and model
Gulstm GIV
Aircraft serial
1071
Aircraft time
12,852 hours, 9,886 cycles
System (JASC)
5755 · Spoilers
Part
Rib
Part number
1159SB206237
Condition
Corroded
Location
Spoiler
Part time
12,852 hours, 9,886 cycles
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

LEFT SPONSON RIB REPLACED DUE TO CORROSION ON INSIDE DIAMETER OF LUGS. LUG BEARING REPLACEMENT WAS NOT POSSIBLE DUE TO PREVIOUS OVERSIZING; LUG BORE[S] WAS BEYOND LIMITS. RIGHT MAIN SPONSON RIB FORWARD BEARING LUG CORRODED - REAMED TO THE FORTH OVERSIZE. RIGHT MAIN SPONSON RIB AFT BEARING LUG CORRODED - REAMED TO THIRD OVERSIZE.