# SDR 99ZZZX1643

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N3504Q
- Make and model: Piper PA-32-300
- Registry model: [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300) (OpenAirDocs)
- Aircraft serial: 327740064
- System (JASC): [3457 · Global Positioning System](https://openairdocs.org/jasc/3457)
- Part: Receiver
- Condition: Failed
- Location: Gps
- Component: M3
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX1643

## Discrepancy

THE NORTHSTAR M3 GPS RECEIVER, SN AL13203, RECENTLY INSTALLED IN PIPER CHEROKEE 6, PA-32-300, N3504Q, SN 32-7740064, WILL NOT PROPERLY ILLUMINATE APR, MSG, WPT, OR PTK ANNUNCIATORS IN SEPARATE MSI AVIONICS MODEL INSSDU-IV NAV-1/GPS NAVIGATION SELECTOR/ANNUNCIATOR ASSEMBLY, PN 97-10354AR-14.  THE NORTHSTAR M3 UNIT IN THIS AIRCRAFT WILL NOT ILLUMINATE ANY OF THE FOUR ANNUNCIATORS IN THE INSSDU-IV UNIT BECAUSE THE M3'S ANNUNCIATOR DRIVERS CANNOT HANDLE THE 0.120 AMP INCANDESCENT CURRENT LOAD.

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