# SDR DXTA2016030706197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2016
- Submitted: March 16, 2016
- Operation: Air carrier
- Aircraft: [N426QS](https://openairdocs.org/aircraft/N426QS), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1426
- Aircraft time: 12,356 hours, 6,137 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Flap Track
- Part number: 1159WM20051109
- Condition: Corroded
- Location: Te Flap
- Part time: 12,356 hours, 6,137 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2016030706197

## Discrepancy

LEFT FLAP TRACK SUPPORT FITTING B, CORROSION FOUND AT FLAP TRACK SUPPORT FITTING BOLT HOLE.  AFTER CORROSION WAS REMOVED FROM BORE OF "B" FLAP TRACK UPPER ASSEMBLY FOUND BUSHINGS TO MEASURE BEYOND LIMITS OF .8760-.8770 PER DRAWING 1159WM20056. LT FLAP TRACK "B" UPPER AND LOWER FITTING LUGS MEASURED OUT OF TOLERANCE PER DRAWING 1159WM20056 AND 1159WM20057.  REMOVED AND REPLACED LT B TRACK ASSY WITH UPPER AND LOWER FITTINGS TO REAR BEAM AREA PER GAC DRAWINGS 1159W20014 AND 1159W40003. TORQUED CONNECTING B TRACK HARDWARE PER GAMPS 2220 REV E.

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