# SDR W9FA201204180001

- Type: Service difficulty report (as reported; unverified)
- 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](https://openairdocs.org/jasc/5755)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/W9FA201204180001

## Discrepancy

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.

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