# SDR CA160216009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2016
- Submitted: April 22, 2016
- Operation: General aviation
- Make and model: Dhav DHC8301
- Aircraft time: 1 hours
- Engine: Pwa PW123D
- System (JASC): [7530 · Compressor Bleed Control](https://openairdocs.org/jasc/7530)
- Part: Bleed Air Sys
- Condition: Malfunctioned
- Location: Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA160216009

## Discrepancy

(CAN) LIGHT BLUE SMOKE REPORTED IN COCKPIT AFTER ENGINE START.  BOTH NR 1 & NR 2 ENGINE BLEEDS SWITCHED WERE ON WITH RECIRCULATION FAN ON.  ENGINES WERE SUBSEQUENTLY SHUTDOWN AND A REPORT OF MILD OIL SMELL REPORTED BY THE CREW.  NO MEDICAL ACTION WAS REQUIRED AS A RESULT OF THIS EVENT. THE ENGINEERS HAVE CONFIRMED THE SOURCE OF THE SMOKE AS THE NR 1 ENGINE. THE P2.5 VALVE HAD SEIZED DUE TO PISTON RING CORROSION. THE VALVE WILL BE REPLACED.

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