Lost communications radio failure.

Attributes
ACN	292790
Time
Date	199501
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 668 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : ord tower : ord tower : stl
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : initial climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 240 flight time total : 5500 flight time type : 2000
ASRS Report	292790
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 225 flight time total : 9000 flight time type : 1000
ASRS Report	292909
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

On arrival at aircraft, mechanic was working on first officer communication control panel. After liftoff, unable to receive or transmit to ord. Squawked communication failure on transponder, maintained VFR on top and turned on course. Also attempted to listen on VOR. Relief pilot removed first officer's radio control panel and communication was restored to captain's side. ATC advised that communication failure was well done but squawk should have been 7600 versus 7500. Called company and suggested swapping second observer's panel for failed unit. After checking out the part numbers, company maintenance approved the swap. System restored to normal. Flight continued to destination.

Original NASA ASRS Text

Title: LOST COMS RADIO FAILURE.

Narrative: ON ARR AT ACFT, MECH WAS WORKING ON FO COM CTL PANEL. AFTER LIFTOFF, UNABLE TO RECEIVE OR XMIT TO ORD. SQUAWKED COM FAILURE ON XPONDER, MAINTAINED VFR ON TOP AND TURNED ON COURSE. ALSO ATTEMPTED TO LISTEN ON VOR. RELIEF PLT REMOVED FO'S RADIO CTL PANEL AND COM WAS RESTORED TO CAPT'S SIDE. ATC ADVISED THAT COM FAILURE WAS WELL DONE BUT SQUAWK SHOULD HAVE BEEN 7600 VERSUS 7500. CALLED COMPANY AND SUGGESTED SWAPPING SECOND OBSERVER'S PANEL FOR FAILED UNIT. AFTER CHKING OUT THE PART NUMBERS, COMPANY MAINT APPROVED THE SWAP. SYS RESTORED TO NORMAL. FLT CONTINUED 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.