Communications emergency declared.

Attributes
ACN	290515
Time
Date	199412
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : iah
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial other 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 : 270 flight time total : 14000 flight time type : 11000
ASRS Report	290515
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Right after takeoff we lost all radios. Subsequent attempts to regain communication with ATC failed. We remained VMC, transmitted in the blind our intentions, and squawked 7600. We received a green light on final and landed. Callback conversation with reporter revealed the following: the reporter flies the B-737 for a major united states domestic air carrier. The cause of the radio loss was the yoke mounted switch on the captain's side that shorted out internally causing the radios to be 'hot' all the time, but not allowing reception. The reporter's apology was graciously accepted by the tower.

Original NASA ASRS Text

Title: COMS EMER DECLARED.

Narrative: RIGHT AFTER TKOF WE LOST ALL RADIOS. SUBSEQUENT ATTEMPTS TO REGAIN COM WITH ATC FAILED. WE REMAINED VMC, XMITTED IN THE BLIND OUR INTENTIONS, AND SQUAWKED 7600. WE RECEIVED A GREEN LIGHT ON FINAL AND LANDED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: THE RPTR FLIES THE B-737 FOR A MAJOR UNITED STATES DOMESTIC ACR. THE CAUSE OF THE RADIO LOSS WAS THE YOKE MOUNTED SWITCH ON THE CAPT'S SIDE THAT SHORTED OUT INTERNALLY CAUSING THE RADIOS TO BE 'HOT' ALL THE TIME, BUT NOT ALLOWING RECEPTION. THE RPTR'S APOLOGY WAS GRACIOUSLY ACCEPTED BY THE TWR.

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.