# SDR TRBA2008033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2008
- Submitted: March 21, 2008
- Operation: Air carrier
- Aircraft: N533AT
- Make and model: Aerosp ATR 72-212A
- Registry model: [Aerosp ATR 72-212A](https://openairdocs.org/model/aerospatiale-atr-72-212a) (OpenAirDocs)
- Aircraft serial: 533
- Aircraft time: 17,854 hours, 19,913 cycles
- System (JASC): [3497 · Navigation System Wiring](https://openairdocs.org/jasc/3497)
- Part: Diode
- Part number: NSA93412101C
- Condition: Failed
- Location: Cockpit 22vu
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA2008033

## Discrepancy

AVIONICS VENT C/B POPPED AND COULD NOT BE RESET.  WHEN TESTING ANNUNCIATOR LIGHTS ELECTRICAL SMOKE ODOR AND "ANNUNCIATOR LIGHT TEST" C/B POPPED OUT.  RESET OK.  REMOVED AND REPLACED DIODE BOX 22VD IAW JIC NR 20-45-10 AND OPT CK OK.  RELOCATE WIRE TERMINAL PLU A/B AT CONNECTOR 22VT IAW AWM STANDARD PRACTICES NR 20-45-11, AWM NR 33-14-01 AND NR 21-51-05.  OPT CK OK.

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