SDR 2006UALA00691

Service difficulty report · Switch · Boeing 737522

Difficulty date: April 14, 2006
Submitted: April 18, 2006
Operation: Air carrier
Aircraft: N913UA
Make and model: Boeing 737522
Aircraft serial: 25291
Aircraft time: 39,851 hours, 29,405 cycles
Engine: Cfmint CFM563C1
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Switch
Condition: Failed
Location: Mlg
Stage of operation: CL
How discovered: O
Nature of condition: G, S
Precautionary procedure: A

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

What was found

CREW REPORTS AFTER TAKEOFF, AUTO-THROTTLE WENT INOP, L-NAV FAILED, BOTH TRANSPONDERS FAILED, AND AFTER FURTHER CLIMBING, CABIN ALT HORN SOUNDED. EMERGENCY DECLARED & FLIGHT DIVERTED. LANDING GEAR SWITCH FAILED. REPLACED LANDING GEAR SWITCH S105.