# SDR FMAA2020012900000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2019
- Submitted: January 29, 2020
- Operation: Air carrier
- Aircraft: [N87TS](https://openairdocs.org/aircraft/N87TS), registered now
- Make and model: Piper PA-31-310
- Registry model: [Piper PA-31-310](https://openairdocs.org/model/piper-pa-31-310) (OpenAirDocs)
- Aircraft serial: 317300969
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Arm
- Part number: 42042000
- Condition: Cracked
- Location: Lt Mlg Retract
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FMAA2020012900000

## Discrepancy

PILOT REPORTED THAT HE WAS NOT GETTING A DOWN AND LOCK INDICATION ON LEFT MAIN.  AFTER HE WAS ON GROUND, INSPECTION REVEALED THAT THE LEFT RETRACT ARM PN 42042-000 WAS CRACKED AND SEPARATED SUFFICIENTLY ENOUGH TO PREVENT THE DOWN LOCK SWITCH FROM CLOSING.  REPLACED RETRACT ARMS ON BOTH SIDES OF ACFT, AFTER LEARNING OF PIPER SL 1092C.

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