# SDR DALA2016021000994

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2016
- Submitted: February 12, 2016
- Operation: Air carrier
- Aircraft: [N823DX](https://openairdocs.org/aircraft/N823DX), registered now
- Make and model: Boeing 757-26D
- Registry model: [Boeing 757-26D](https://openairdocs.org/model/boeing-757-26d) (OpenAirDocs)
- Aircraft serial: 33967
- Aircraft time: 25,839 hours, 15,429 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Ball Screw
- Condition: Corroded
- Location: Lt Wing Te Flaps
- 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/DALA2016021000994

## Discrepancy

LEFT WING, OTBD FLAP, OTBD BALLSCREW NR 1 HAS CORROSION INSIDE THE BUSHING POST. PROCURED LT WING OTBB FLAP OTBD BALLSCREW NR 1 POSITION PN 7900067, SN 4114, REMOVAL, INSTALLATION, AND OPS CHECK COMPLIED WITH ON NR 2751-2538.  REMOVED LT WING OTBD FLAP OTBD BALLSCREW NR 1 POS PN 7829995, SN 0199.  PROCURED LT WING OTBD FLAP, OTBD  BALLSCREW NR 1 POSITION, PN 7900067, SN 4114, REMOVAL, INSTALLATION AND OP'S CK COMPLIED WITH ON CARD 2751-2538.  REMOVED LT WING OTBD FLAP OTBD BALLSCREW NR 1 POSITION PN 7829995, SN 0199.

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