LJ55 crew lost communication ability with ATC after departure at isp.

Attributes
ACN	583325
Time
Date	200305
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : isp.airport
State Reference	NJ
Altitude	msl single value : 3000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : n90.tracon tower : fll.tower
Operator	common carrier : air taxi
Make Model Name	Learjet 55
Operating Under FAR Part	Part 135
Flight Phase	climbout : initial climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 6750 flight time type : 4000
ASRS Report	583325
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : vhf receiver other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist controller : issued new clearance flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

The flight began as normal. Received ATIS. Clearance was received. Taxi clearance was received and takeoff clearance was received for departure from runway 6 at isp. After takeoff, we established contact with departure. After 2 radar vectors, we were cleared direct beads intersection. After this clearance, we were no longer able to transmit on either radio or microphone. We were able to hear everything said by departure, so we tried the new frequency given to us by departure and followed our clearance as cleared. The new departure frequency was able to hear us key our mikes, so we were able to communicate via '2 clicks' for acknowledgement. Controllers asked us to identify after we keyed to confirm. We were told to use the double key to acknowledge instructions. We were asked to climb to FL190. After about 20 mins airborne, we were able to transmit on the copilot's side only, so we were able to communicate with ATC normally. After landing at bct, I noted the discrepancy in the aircraft log and maintenance addressed the issue.

Original NASA ASRS Text

Title: LJ55 CREW LOST COM ABILITY WITH ATC AFTER DEP AT ISP.

Narrative: THE FLT BEGAN AS NORMAL. RECEIVED ATIS. CLRNC WAS RECEIVED. TAXI CLRNC WAS RECEIVED AND TKOF CLRNC WAS RECEIVED FOR DEP FROM RWY 6 AT ISP. AFTER TKOF, WE ESTABLISHED CONTACT WITH DEP. AFTER 2 RADAR VECTORS, WE WERE CLRED DIRECT BEADS INTXN. AFTER THIS CLRNC, WE WERE NO LONGER ABLE TO XMIT ON EITHER RADIO OR MIKE. WE WERE ABLE TO HEAR EVERYTHING SAID BY DEP, SO WE TRIED THE NEW FREQ GIVEN TO US BY DEP AND FOLLOWED OUR CLRNC AS CLRED. THE NEW DEP FREQ WAS ABLE TO HEAR US KEY OUR MIKES, SO WE WERE ABLE TO COMMUNICATE VIA '2 CLICKS' FOR ACKNOWLEDGEMENT. CTLRS ASKED US TO IDENT AFTER WE KEYED TO CONFIRM. WE WERE TOLD TO USE THE DOUBLE KEY TO ACKNOWLEDGE INSTRUCTIONS. WE WERE ASKED TO CLB TO FL190. AFTER ABOUT 20 MINS AIRBORNE, WE WERE ABLE TO XMIT ON THE COPLT'S SIDE ONLY, SO WE WERE ABLE TO COMMUNICATE WITH ATC NORMALLY. AFTER LNDG AT BCT, I NOTED THE DISCREPANCY IN THE ACFT LOG AND MAINT ADDRESSED THE ISSUE.

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.