An MD11 windshield heat arced then the windshield cracked during descent at 12;000 ft. An emergency ...

Attributes
ACN	1031611
Time
Date	201208
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Descent
Component
Aircraft Component	Cockpit Window
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

[We were] descending on arrival; at 12;000 ft and 300 KTS; windshield heat normal-on. First officer's windscreen started arcing sparks and glowing yellow which caused the windscreen to crack the entire width of the window. As pilot flying; I handed over the aircraft to the captain and at his suggestion; donned my full face mask oxygen mask and ran the emergency procedure checklist for cracked windscreen. We declared an emergency and received expeditious handling to landing.

Original NASA ASRS Text

Title: An MD11 windshield heat arced then the windshield cracked during descent at 12;000 FT. An emergency was declared and flight landed at destination.

Narrative: [We were] descending on arrival; at 12;000 FT and 300 KTS; windshield heat normal-on. First Officer's windscreen started arcing sparks and glowing yellow which caused the windscreen to crack the entire width of the window. As pilot flying; I handed over the aircraft to the Captain and at his suggestion; donned my full face mask oxygen mask and ran the emergency procedure checklist for cracked windscreen. We declared an emergency and received expeditious handling to landing.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

An MD11 windshield heat arced then the windshield cracked during descent at 12;000 ft. An emergency was declared and flight landed at destination.