SDR AALA202607296950

Service difficulty report · Switch · Boeing 777323ER

Difficulty date: July 28, 2026
Submitted: July 30, 2026
Operation: Air carrier
Aircraft: N734AR
Make and model: Boeing 777323ER
Aircraft serial: 31480
Aircraft time: 44,608 hours, 5,116 cycles
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Switch
Condition: Faulty
Location: Zone 700
Stage of operation: CR
How discovered: V
Nature of condition: J
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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.