# SDR 97ZZZX4272

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N20402](https://openairdocs.org/aircraft/N20402), registered now
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft serial: 17261261
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Landing Light
- Part number: GE4522
- Condition: Deteriorated
- Location: Bulb
- Part time: 59 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX4272

## Discrepancy

LANDING LIGHT REPLACED FOR BROKEN ELEMENT.  THIS LAMP, AS WELL AS THE 4509 AND THE 4596, HAVE DETERIORATED TO THE POINT THE AVERAGE LIFE IS 50 HOURS TACH TIME.

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