# SDR ARWA20071205

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2007
- Submitted: December 19, 2007
- Operation: Air carrier
- Aircraft: N784AL
- Make and model: Doug DC-8-63F
- Registry model: [Doug DC-8-63F](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63f) (OpenAirDocs)
- Aircraft serial: 46135
- Aircraft time: 80,926 hours, 25,977 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Snap Ring
- Condition: Loose
- Location: Nr 2 Tc Defuser
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ARWA20071205

## Discrepancy

DURING CLIMB-OUT, UNABLE TO CONTROL THE CABIN PRESSURIZATION, NEITHER WITH AUTO OR MANUAL (WITH 4 T.C. ON).  FOUND NR 2 TC DISFUSER SNAP RING LOOSE.  REINSTALLED SNAP RING AT NR 2 TC IN ACCORDANCE WITH DC-8 M/M 21-10-6.  PRESSURIZATION CHECK FOUND NORMAL IN ACCORDANCE WITH DC-8 M/M 21-31-0.

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