C550 pilot had communication failure on vectors into jyo.

Attributes
ACN	526520
Time
Date	200110
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jyo.airport
State Reference	VA
Altitude	msl single value : 5000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iad.tracon tracon : ogg.tracon
Operator	general aviation : corporate
Make Model Name	Citation II S2/Bravo
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 3800 flight time type : 1500
ASRS Report	526520
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical inflight encounter : weather inflight encounter other other anomaly other other spatial deviation
Independent Detector	atc equipment other atc equipment : radar other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : returned to intended or assigned course
Consequence	faa : reviewed incident with flight crew faa : investigated other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

We were flying a brand new citation we had picked up the previous day. The flight was en route to leesburg, va, which is inside the washington dc tfr area. While en route, the #1 communication radio was causing problems with the automatic-squelch being set too high, so we decided to switch to communication #2 for normal communications. The flight proceeded without incident until we were being vectored for approach to leesburg. I was watching the approach on the FMS and realized we were needing a turn to intercept the localizer. I called approach and got no response on communication #2. Then I switched to communication #1 and reestablished communications. The controller told us to contact his supervisor upon arrival. After speaking with the supervisor we were told we had been heading for camp david. The airplane was flown to the factory service center where both audio panels were worked on and the communication antenna was removed and replaced. There was foreign object damage found under the antenna and the antenna was not bonding to aircraft.

Original NASA ASRS Text

Title: C550 PLT HAD COM FAILURE ON VECTORS INTO JYO.

Narrative: WE WERE FLYING A BRAND NEW CITATION WE HAD PICKED UP THE PREVIOUS DAY. THE FLT WAS ENRTE TO LEESBURG, VA, WHICH IS INSIDE THE WASHINGTON DC TFR AREA. WHILE ENRTE, THE #1 COM RADIO WAS CAUSING PROBS WITH THE AUTO-SQUELCH BEING SET TOO HIGH, SO WE DECIDED TO SWITCH TO COM #2 FOR NORMAL COMS. THE FLT PROCEEDED WITHOUT INCIDENT UNTIL WE WERE BEING VECTORED FOR APCH TO LEESBURG. I WAS WATCHING THE APCH ON THE FMS AND REALIZED WE WERE NEEDING A TURN TO INTERCEPT THE LOC. I CALLED APCH AND GOT NO RESPONSE ON COM #2. THEN I SWITCHED TO COM #1 AND REESTABLISHED COMS. THE CTLR TOLD US TO CONTACT HIS SUPVR UPON ARR. AFTER SPEAKING WITH THE SUPVR WE WERE TOLD WE HAD BEEN HEADING FOR CAMP DAVID. THE AIRPLANE WAS FLOWN TO THE FACTORY SVC CTR WHERE BOTH AUDIO PANELS WERE WORKED ON AND THE COM ANTENNA WAS REMOVED AND REPLACED. THERE WAS FOREIGN OBJECT DAMAGE FOUND UNDER THE ANTENNA AND THE ANTENNA WAS NOT BONDING TO ACFT.

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.