# SDR DXTA2016030706203

- 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: 1159WM20053105
- 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/DXTA2016030706203

## Discrepancy

RIGHT FLAP TRACK SUPPORT FITTING D, CORROSION FOUND AT FLAP TRACK SUPPORT FITTING BOLT HOLE.  AFTER CORROSION WAS REMOVED FROM BORE OF "D" FLAP TRACK UPPER ASSEMBLY FOUND BUSHINGS TO MEASURE BEYOND LIMITS OF .6245 - .6255 PER DRAWING 1159WM20107.  RT "D" TRACK LUGS OF UPPER AND LOWER FITTINGS OUT OF BLUEPRINT SPECS IN ACCORDANCE WITH DRAWING NUMBER 1159WM20107 AND 1159WM20108 AND 1159WM20053.  REMOVED RT "D" FLAP TRACK UPPER FITTING ASSEMBLY AND LOWER FITTING PER DRAWING 1159WM20107 AND 1159WM20107. NEW UPPER FITTING PN 1159WM20107-10, LOWER FITTING PN 1159WM20108-8 AND TRACK PN 1159WM20053-105 ORDERED, RECEIVED AND MATCH DRILLED.  CONFIRMED FITTING ALIGNMENT AND FABRICATED SHIMS TO REAR BEAM AND TOP OF TRACK WHERE REQUIRED PER GAC DRAWING 1159W40003 AND 1159W20014.  INSTALLED RT "D" TRACK BLOCK PN 1159WM20234-4 TO RT "D" FLAP TRACK PN 1159WM20053-105 WITH 32 EA RIVETS,5 EA. HL31-8 HI LOKS AND 1 EA SFT22-4-A9 BOLT PER DRAWING 1159WM20223.  ASSEMBLED LT "D" FLAP TRACK PN 1159WM2005-103 AMD BLOCK TO UPPER SKIN ASSEMBLY PER DRAWING 1159W20023. INSTALLED RT D TRACK ASSY WITH UPPER AND LOWER FITTINGS TO REAR BEAM AREA PER GAC DRAWINGS 1159W20014 AND 1159W40003.  TORQUED CONNECTING D TRACK HARDWARE PER GAMPS 2220 REV E.

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