# SDR CA130603008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2013
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft time: 19,118 hours
- Engine: Pwa PT6A67D
- Propeller: Hartzl HCE4A3I
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Duct
- Part number: 1295500631
- Condition: Cracked
- Location: Cabin Pressure
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA130603008

## Discrepancy

(CAN) FLIGHT CREW NOTED AIRCRAFT HAD DIFFICULTY REACHING MAX DIFF 4 PRESSURIZATION WAS FLUCTUATING. DURING TROUBLESHOOTING IT WAS NOTICED THAT A BLEED AIR PIPE IN LH WING HAD A LARGE CRACK AROUND THE WELDED - 4 FITTING ALLOWING BLEED AIR TO ESCAPE INTO WING. EVA TUBING DID NOT RUPTURE AS THE LEAK WAS OPPOSITE OF TUBING AND DID NOT GIVE INDICATION OF PIPE FAILURE. AS WELL A FAULTY DIODE IN WIRING TO LH BLEED SHUTOFF VALVE PREVENTED VALVE TO OPEN WHEN LH BLEED SELECTED. LH BLEED SYSTEM WAS NON-FUNCTIONAL. BLEED AIR PIPE AND DIODE WERE REPLACED. LH BLEED SYSTEM AND PRESSURIZATION WERE GROUND TESTED WITH NO FAULTS NOTED.

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