# SDR GTIA050051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2005
- Submitted: April 11, 2005
- Operation: Air carrier
- Aircraft: N811NK
- Make and model: Doug DC-9-81(MD-81)
- Registry model: [Doug DC-9-81(MD-81)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81) (OpenAirDocs)
- Aircraft serial: 48017
- Engine: Pwa JT8D217C
- System (JASC): [7711 · Engine Pressure Ratio (EPR)](https://openairdocs.org/jasc/7711)
- Part: Gauge
- Condition: Defective
- Location: Cockpit
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA050051

## Discrepancy

WINDOW POPS WHEN IT PRESSURIZES AND LT EPR GAUGE ERRATIC READING TOP TO BOTTOM SCALE IN IDLE IN DESCENT, AIRCRAFT TAIL SWAP WITH 819NK.  PRESSURIZED AC NO POP - OK FOR CONTINUED SERVICE, REMOVED AND REPLACED NR1 EPR GAUGE.  OPS CHECK NORMAL.  (K)

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