# SDR GR4D20120321020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2012
- Submitted: March 21, 2012
- Operation: General aviation
- Aircraft: [N416QS](https://openairdocs.org/aircraft/N416QS), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1316
- Aircraft time: 12,433 hours, 6,092 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Flap Track
- Part number: 1159WM200524
- Condition: Corroded
- Location: Zone 600
- Part time: 12,433 hours, 6,092 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/GR4D20120321020

## Discrepancy

FLAP TRACK CORRODED, ULTRA SONIC NDT INSPECTION COMPLIED WITH.  AFTER ENGINEERING EVALUATION, REMAINING THICKNESS WAS UNACCEPTABLE. REF B/P SE05811901, REV D.  REF CMP GIV MESSAGE 3575111 FOR INSPECTION.

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