Medium large transport crew lost communication with ATC.

Attributes
ACN	442120
Time
Date	199907
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : srq.vortac
State Reference	FL
Altitude	msl single value : 37000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx.artcc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
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 oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 10700 flight time type : 3500
ASRS Report	442120
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	aircraft equipment problem : critical inflight encounter other
Independent Detector	other flight crewa other flight crewb
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Lost communications with ZJX along J86 over the gulf of mexico. Troubleshot radios with maintenance control via phone patch. Unable to rectify problem. Established communication with ZJX (phone patch) through air carrier dispatcher. Switched over to tpa approach who cleared us for approach, landing and taxi to gate. As a side note, we did not squawk 7600 lost communication because we had relay contact with controling center. In speaking with maintenance, problem was determined to be short in captain's microphone jack and possible radio transmitter -- aircraft with new crew continued uneventfully to destination.

Original NASA ASRS Text

Title: MLG CREW LOST COM WITH ATC.

Narrative: LOST COMS WITH ZJX ALONG J86 OVER THE GULF OF MEXICO. TROUBLESHOT RADIOS WITH MAINT CTL VIA PHONE PATCH. UNABLE TO RECTIFY PROB. ESTABLISHED COM WITH ZJX (PHONE PATCH) THROUGH ACR DISPATCHER. SWITCHED OVER TO TPA APCH WHO CLRED US FOR APCH, LNDG AND TAXI TO GATE. AS A SIDE NOTE, WE DID NOT SQUAWK 7600 LOST COM BECAUSE WE HAD RELAY CONTACT WITH CTLING CTR. IN SPEAKING WITH MAINT, PROB WAS DETERMINED TO BE SHORT IN CAPT'S MIKE JACK AND POSSIBLE RADIO XMITTER -- ACFT WITH NEW CREW CONTINUED UNEVENTFULLY TO DEST.

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.