# SDR 96ZZZX4029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Aero Controls, LLC, repair station IU6R626N](https://openairdocs.org/faa-repair-station/IU6R626N/aero-controls-llc.md) (OpenAirDocs)
- Make and model: Boeing 727
- Registry model: [Boeing 727](https://openairdocs.org/model/boeing-727) (OpenAirDocs)
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Doubler
- Part number: 652163429
- Condition: Cracked
- Location: Carriage Fitting
- Component: 6521634149
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX4029

## Discrepancy

THERE ARE 3 CRACKS .25 INCH, .50 INCH AND 1.0 INCH LONG IN LOWER END OF LEADING EDGE SKIN SPLICE DOUBLER.  TWO CRACKS EXTEND THROUGH NEAREST FASTENER HOLES.  DOUBLER IS LOCATED AT NR 2 CARRIAGE FITTING.  THE CRACKS RUN PARALLEL TO GRAIN OF MATERIAL.  LEADING EDGE SKIN IS SPLICED AT THIS POINT CAUSING A STRESS POINT DURING FLEXING OF FLAP.  SUBMITTER SUGGESTS MAKING DOUBLER OUT OF THICKER GAUGE MATERIAL.

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