# SDR CNQ2002F00000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2002
- Submitted: June 26, 2002
- Operation: Air carrier
- Aircraft: [N308CS](https://openairdocs.org/aircraft/N308CS), registered now
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Aircraft serial: 5500976
- Engine: Pwa PW530A
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Part number: 651711073
- Condition: Chafed
- Location: Speed Brake
- Part time: 830 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CNQ2002F00000

## Discrepancy

THE ORANGE FRESH AIR DUCT IN THE TAILCONE IS CHAFING AGAINST THE SPEED BRAKE LINES.  THIS RESULTED IN A FAILURE IN THE SPEED BRAKE LINE.  THE CREW AND PASSENGERS OF THE AIRCRAFT REPORTED A HYD FLUID MIST COMING OUT OF THE WEMACS IN THE CABIN.   REPLACED DUCT AND SPEED BRAKE LINE WITH NEW.  FOLLOWED BY THE APPLICATION OF ANTI-CHAFE MATERIAL TO THE SPEED BRAKE LINES.  ALSO REPLACED VENTILATION JUNCTION BOX, REPLACED CABIN FRESH AIR DUCTS AND REMOVED ATOMIZED HYD FLUID IN THE AFFECTED AREAS.

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