A commercial fixed wing mdt in climb at 12000 ft returned to the field due to pitot and angle of attack sensor heat failure. Cause of failure unknown.

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Attributes
ACN	412823
Time
Date	199809
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : rdu
State Reference	NC
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : rdu tower : atl
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 160 flight time total : 12800 flight time type : 160
ASRS Report	412823
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After liftoff we received a left and right pitot heat fail, left and right angle of attack sensor heat fail, and pitot base heat fail. We reset the pitot heat switches as per the QRH. When the heats did not reset we returned to the departure airport. Maintenance then fixed the aircraft and we continued the flight.

Original NASA ASRS Text

Title: A COMMERCIAL FIXED WING MDT IN CLB AT 12000 FT RETURNED TO THE FIELD DUE TO PITOT AND ANGLE OF ATTACK SENSOR HEAT FAILURE. CAUSE OF FAILURE UNKNOWN.

Narrative: AFTER LIFTOFF WE RECEIVED A L AND R PITOT HEAT FAIL, L AND R ANGLE OF ATTACK SENSOR HEAT FAIL, AND PITOT BASE HEAT FAIL. WE RESET THE PITOT HEAT SWITCHES AS PER THE QRH. WHEN THE HEATS DID NOT RESET WE RETURNED TO THE DEP ARPT. MAINT THEN FIXED THE ACFT AND WE CONTINUED THE FLT.

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.