# SDR RRXA98013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N950R
- Make and model: Doug DC-8-63
- Registry model: [Doug DC-8-63](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63) (OpenAirDocs)
- Aircraft serial: 45903
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Check Valve
- Part number: 56194331
- Condition: Malfunctioned
- Location: Left
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RRXA98013

## Discrepancy

A/C DEPRESSURIZED AT 33,000 DESCEND TO 17,000 TO HOLD 12,000 FT CABIN.  NR 1 T/C INOP.  INSTALLED SERVICEABLE WARM AIR CK VALVE ON LT PNEU MANIFOLD.  SECURED LOOSE DUCTING, A/C PRESSURIZATION AND LEAK CK GOOD, NR 1 T/C GRD CKS GOOD.

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