# SDR 9516369882

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N670MC
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 47659
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: De-Ice Syst
- Condition: Malfunctioned
- Location: Empenage
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9516369882

## Discrepancy

DURING CRUISE, AIRFOIL ICE PROTECTION PRESSURE ABNORMAL LIGHT ILLUMINATED INTERMITTENTLY WITH TAIL DE-ICE ACTIVATED.  AIRCRAFT DIVERTED TO FSD AND LANDED WITHOUT INCIDENT.  REPLACED TAIL SHUTOFF VALVE, PRESSURE SWITCH, AND AIRFOIL PRESSURE DELAY RELAY AND OPERATIONAL TEST GOOD.

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