# SDR AALA202607296950

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2026
- Submitted: July 30, 2026
- Operation: Air carrier
- Aircraft: [N734AR](https://openairdocs.org/aircraft/N734AR), registered now
- Make and model: Boeing 777323ER
- Aircraft serial: 31480
- Aircraft time: 44,608 hours, 5,116 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Switch
- Condition: Faulty
- Location: Zone 700
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202607296950

## Discrepancy

AIRCRAFT WAS GROUNDED: 1 HOUR INTO FLT GOT AN EICAS OVERSPEED WARNING AT FL300 M83 SHORTLY AFTER WE GOT A EICAS WHITE VMO GEAR DOWN MESSAGE AND A OVERSPEED VMO/MMO STATUS MESSAGE. DECESION MADE TO RETURN TO DFW, EMERGENCY DECLARED AND AIRCRAFT LANDED OVERWEIGHT WITHOUT INCIDENT. MANTENANCE FOUND VTO GEAR SWITCH NOT IN THE LOCKED NORMAL POSITION. REPLACED VTO SWITCH ASSY IAW AMM 27-32-00.

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