# SDR DHL2001707009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2001
- Submitted: August 6, 2001
- Operation: Air carrier
- Aircraft: [N707DH](https://openairdocs.org/aircraft/N707DH), registered now
- Make and model: Boeing 727-22
- Registry model: [Boeing 727-22](https://openairdocs.org/model/boeing-727-22) (OpenAirDocs)
- Aircraft serial: 18321
- Engine: Pwa JT8D7B
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHL2001707009

## Discrepancy

T/O THRUST LEFT MANIFOLD DUCT PRESSURE ROSE TO 100PSI DEFERRED PER MAINT. CONTROL 36-11-1 MB. WHEN ATTEMPTING TO START ENGINES TO CHECK PRESSURIZATION, NR 1 ENG WOULD NOT START.  NO DUCT PRESSURE DROP AND START VALVE OPEN LIGHT DID NOT ILLUMINATE.  RESET C/B- NO HELP. R&R BLEED CONTROL VALVE NR 1 ENG. OPS CK'S GOOD IAW M/M 36-10-1. NO LEAKS NOTED.

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