# SDR ERAA201200002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2012
- Submitted: January 10, 2012
- Operation: Air carrier
- Aircraft: N575Q
- Make and model: Beech 1900C
- Registry model: [Beech 1900C](https://openairdocs.org/model/beech-1900c) (OpenAirDocs)
- Aircraft serial: UC160
- Aircraft time: 27,751 hours, 34,954 cycles
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Relay
- Condition: Failed
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ERAA201200002

## Discrepancy

INTERMITTENT AND COMPLETE FAILURE OF EHSI, COMM NR 1 AND GPS SIMULTANEOUSLY WHILE IN CRUISE FLIGHT.  HAPPENED TWICE FOR APPROX 1 TO 2 MINUTES.  CHECKED ALL CONNECTIONS EHSI, COMM NR 1 COMM, GPS RESEATED ALL CONNECTIONS OPS CHECK SAT.  ON GROUND.  AFTER START THE GPS, COMM NR 1 AND EHSI DO NOT HAVE POWER.  WILL COME ON AFTER RESETTING AVIONICS' MASTER 2-3X.  REPLACED K136 RELAY SYSTEM OPS OKAY.

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