# SDR CA000224014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2000
- Submitted: April 14, 2000
- Operation: Air carrier
- Make and model: Dhav DHC8102
- Aircraft time: 23,798 hours
- Engine: Pwa PW120A
- Propeller: Hamstd 14SF7
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 7786951
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 23,263 hours, 31,209 cycles
- Component: Pneumatic Distri
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA000224014

## Discrepancy

(CAN) CREW REPORTED THE NR 1 BLEED HOT C/L WAS CYCLING IN-FLIGHT.  NR 1 ENGINE BLEED WAS DEACTIVATED AND A/C CONTINUED TO BASE.  MAINT INVESTIGATION REVEALED 31 ENGINE BLEED WAS HOGGING THE BLEED LOAD.  NR 1 PRESSURE REGULATOR SHUT-OFF VALVE REPLACED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.