# SDR SWIA2026020275107

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N106SY](https://openairdocs.org/aircraft/N106SY), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000399
- Aircraft time: 29,433 hours, 17,410 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Check Valve
- Part number: 17070900401
- Part serial: 01269
- Condition: Faulted
- Location: Zone 700
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA2026020275107

## Discrepancy

ON TAKEOFF FROM PSC,  RT MAIN GEAR DID NOT COME UP ALL THE WAY. RECEIVED RED MLG LEVER DISAGREE MESSAGE. RT MLG STILL SHOWED RED. RAN QRH WITH GEAR LEVER DOWN, RECEIVED 3 GREEN. CYCLED GEAR AGAIN, RT MLG HUNG UP, NOT RETRACTING. (FLIGHT 4744)  TROUBLESHOT ISSUE OF RT MLG. COMPLIED WITH MLG EXTENSION & RETRACTION SYS,  FUNCTIONAL TESTED IAW AMM 32-33-00-720-801-A. DURING TEST, FOUND MLG RETRACTION TO TAKE LONGER THAN MAXIMUM ALLOWED TIME. IAW AMM 32-60-00, PART1,  IF THE POSITION OF THE APPLICABLE LANDING GEAR LEG DOES NOT AGREE WITH THE POSITION OF THE LANDING-GEAR CONTROL LEVER AFTER 20 SECONDS, THE EICAS WARNING LG LEVER DISAGREE ALSO SHOWS. TROUBLESHOT LG SLOW TO EXTEND/RETRACT PER FIM TASK 32-61-00-810-913-A. FAULT OCCURS ON RETRACTION PER SUBTASK 810-229-A, SO COMPLIED WITH SUBTASK 813-438-A TO DO A CHECK FOR MLG SIDE STAY BUSHING MIGRATION AND MAKE SURE THAT THE DIMENSION X INSPECTION ON THE SIDESTAY IS WITHIN LIMITS AND TEST PASSED. PERFORMED NEXT STEP SUBTASK 813-439-A TO DO THE FUNCTIONAL TEST OF THE LG EMERGENCY EXTENSION SYSTE

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