SF34 crew had the captain's forward windshield shatter in ZBW class a airspace.

Attributes
ACN	499682
Time
Date	200101
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : bos.vortac
State Reference	MA
Altitude	msl single value : 22000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw.artcc
Operator	common carrier : air carrier
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : multi engine pilot : atp pilot : cfi
Experience	flight time last 90 days : 195 flight time total : 3700 flight time type : 685
ASRS Report	499682
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : instrument pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 195 flight time total : 3700 flight time type : 685
ASRS Report	499654
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Resolutory Action	controller : provided flight assist controller : issued new clearance flight crew : declared emergency other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

In level cruise flight at FL220, en route from yhz (halifax, ns, canada) to boston, ma, the captain's outer windshield cracked into a spider-web pattern with a loud 'pop.' the windshield heat was on and working normally, the outside air temperature was approximately -25 degrees C static. My first officer and I donned our oxygen masks and smoke goggles, declared an emergency, reduced our airspeed to 160 KIAS, and commenced a descent. ZBW cleared us to 6000 ft. Once we were below 10000 ft, we removed our oxygen masks and left on the goggles. We looked in our aom emergency section but found no procedure for anything to do with windshields. My first officer landed the aircraft uneventfully and I taxied to parking.

Original NASA ASRS Text

Title: SF34 CREW HAD THE CAPT'S FORWARD WINDSHIELD SHATTER IN ZBW CLASS A AIRSPACE.

Narrative: IN LEVEL CRUISE FLT AT FL220, ENRTE FROM YHZ (HALIFAX, NS, CANADA) TO BOSTON, MA, THE CAPT'S OUTER WINDSHIELD CRACKED INTO A SPIDER-WEB PATTERN WITH A LOUD 'POP.' THE WINDSHIELD HEAT WAS ON AND WORKING NORMALLY, THE OUTSIDE AIR TEMP WAS APPROX -25 DEGS C STATIC. MY FO AND I DONNED OUR OXYGEN MASKS AND SMOKE GOGGLES, DECLARED AN EMER, REDUCED OUR AIRSPD TO 160 KIAS, AND COMMENCED A DSCNT. ZBW CLRED US TO 6000 FT. ONCE WE WERE BELOW 10000 FT, WE REMOVED OUR OXYGEN MASKS AND LEFT ON THE GOGGLES. WE LOOKED IN OUR AOM EMER SECTION BUT FOUND NO PROC FOR ANYTHING TO DO WITH WINDSHIELDS. MY FO LANDED THE ACFT UNEVENTFULLY AND I TAXIED TO PARKING.

Data retrieved from NASA's ASRS site as of July 2007 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.