<< >> NASA ASRS Report 192082, October 1991

Heavy transport cargo liner lost communication with center on #1 transceiver. Switching to #2 restored communication.

Attributes
ACN	192082
Time
Date	199110
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Heavy Transport, Low Wing, 4 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other enroute : on vectors enroute airway : zma
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 12000 flight time type : 4500
ASRS Report	192082
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

Should have received the above clearance issued by ATC which we later discovered after communications were reestablished with ATC. We discovered the problem when we could only hear a light aircraft talking to center and he was trying to call our flight. We could hear him sometimes but he could not hear us when we tried to transmit to him. We switched to #2 VHF communication and established communication on the #2 radio. We were off the air for no more than 1 min. Center informed us to fly heading of 360. We responded with a readback and he said to standby as he was on the telephone. Center then came on and said we were not to have started the turn until out of 12000 ft to intercept the airway!

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Original NASA ASRS Text

Title: HVT CARGO LINER LOST COM WITH CENTER ON #1 TRANSCEIVER. SWITCHING TO #2 RESTORED COM.

Narrative: SHOULD HAVE RECEIVED THE ABOVE CLRNC ISSUED BY ATC WHICH WE LATER DISCOVERED AFTER COMS WERE REESTABLISHED WITH ATC. WE DISCOVERED THE PROBLEM WHEN WE COULD ONLY HEAR A LIGHT ACFT TALKING TO CENTER AND HE WAS TRYING TO CALL OUR FLT. WE COULD HEAR HIM SOMETIMES BUT HE COULD NOT HEAR US WHEN WE TRIED TO XMIT TO HIM. WE SWITCHED TO #2 VHF COM AND ESTABLISHED COM ON THE #2 RADIO. WE WERE OFF THE AIR FOR NO MORE THAN 1 MIN. CENTER INFORMED US TO FLY HDG OF 360. WE RESPONDED WITH A READBACK AND HE SAID TO STANDBY AS HE WAS ON THE TELEPHONE. CENTER THEN CAME ON AND SAID WE WERE NOT TO HAVE STARTED THE TURN UNTIL OUT OF 12000 FT TO INTERCEPT THE AIRWAY!

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.