# SDR 2026FA0000834

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2026
- Submitted: October 14, 2026
- Operation: General aviation
- Aircraft: [N897AT](https://openairdocs.org/aircraft/N897AT), registered now
- Make and model: Piper PA-44-180
- Registry model: [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180) (OpenAirDocs)
- Aircraft serial: 4496628
- Aircraft time: 261 hours
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Downlock Switch
- Part number: 89291003
- Condition: Defective
- Location: Zone 700
- Part time: 261 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000834

## Discrepancy

LEFT LANDING GEAR DOWN LOCK SWITCH INTERMITTENT FAILURE. THE LEFT GEAR DOWNLOCK SWITCH WAS FOUND TO BE INTERMITTENT WHEN SLIGHT PRESSURE WAS APPLIED TO THE WIRE HARNESS AT BASE OF SWITCH. A LANDING GEAR UNSAFE INDICATION WAS REPORTED ON THE LEFT GEAR 09/23/2026, A MECHANIC WAS UNABLE TO DUPLICATE THE ISSUE BUT DID ADJUSTED THE SWITCH RIGGING. ON 10/03/2026 THE SAME ISSUE HAPPENED IN FLIGHT RESULTING IN A GEAR UP LANDING. AGAIN WHEN THE AIRCRAFT WAS PLACED ON JACKS THE FAILURE COULD NOT BE DUPLICATED UNTIL THE WIRES WERE TOUCHED AT THE BASE OF THE SWITCH. NOTHING COULD BE FOUND WRONG WITH THE SWITCH UPON VISUAL INSPECTION AFTER REMOVAL. INTERMITTENT INTERNAL FAULT SUSPECTED.

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