Hawker 700 flight crew has heading deviation while departure from ilg.

Attributes
ACN	524950
Time
Date	200109
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : dqo.vortac
State Reference	DE
Altitude	msl single value : 6000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : corporate
Make Model Name	HS 125 Series 700
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 50 flight time total : 15500 flight time type : 2800
ASRS Report	524950
Events
Anomaly	non adherence : clearance other spatial deviation
Resolutory Action	controller : issued advisory controller : issued new clearance flight crew : returned to original clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

IFR clearance was: after takeoff maintain runway heading, 2000 ft vectors to do 306 degree radial to intercept J110 larri intersection as filed. Expect FL310 in 10 mins. After takeoff we switched to phl departure. They advised we were radar contact. We were then told to climb to 6000 ft and turn right heading 330 degrees. Nothing else was said to us. A couple of mins later an obviously upset controller inquired as to what our clearance was. We read it to him and he said to turn left to a heading of 230 degrees and said we had 'blown' through the airway. We then told him that we were flying his assigned heading of 330 degrees. Nothing more was said by him. He then gave us a frequency change. I feel that he thought that he had told us to intercept the airway when in fact he had not. When issued a heading to fly with no additional information, that heading is expected to be maintained until a new clearance is issued. To our knowledge at no time was there a conflict with another aircraft. I don't know of anything we could have done to prevent this misunderstanding by ATC. Maybe we, the crew, should query the controllers anytime when on a heading and ask what can be expected next.

Original NASA ASRS Text

Title: HAWKER 700 FLT CREW HAS HEADING DEV WHILE DEP FROM ILG.

Narrative: IFR CLRNC WAS: AFTER TKOF MAINTAIN RWY HEADING, 2000 FT VECTORS TO DO 306 DEG RADIAL TO INTERCEPT J110 LARRI INTXN AS FILED. EXPECT FL310 IN 10 MINS. AFTER TKOF WE SWITCHED TO PHL DEP. THEY ADVISED WE WERE RADAR CONTACT. WE WERE THEN TOLD TO CLB TO 6000 FT AND TURN R HEADING 330 DEGS. NOTHING ELSE WAS SAID TO US. A COUPLE OF MINS LATER AN OBVIOUSLY UPSET CTLR INQUIRED AS TO WHAT OUR CLRNC WAS. WE READ IT TO HIM AND HE SAID TO TURN L TO A HEADING OF 230 DEGS AND SAID WE HAD 'BLOWN' THROUGH THE AIRWAY. WE THEN TOLD HIM THAT WE WERE FLYING HIS ASSIGNED HEADING OF 330 DEGS. NOTHING MORE WAS SAID BY HIM. HE THEN GAVE US A FREQ CHANGE. I FEEL THAT HE THOUGHT THAT HE HAD TOLD US TO INTERCEPT THE AIRWAY WHEN IN FACT HE HAD NOT. WHEN ISSUED A HEADING TO FLY WITH NO ADDITIONAL INFO, THAT HEADING IS EXPECTED TO BE MAINTAINED UNTIL A NEW CLRNC IS ISSUED. TO OUR KNOWLEDGE AT NO TIME WAS THERE A CONFLICT WITH ANOTHER ACFT. I DON'T KNOW OF ANYTHING WE COULD HAVE DONE TO PREVENT THIS MISUNDERSTANDING BY ATC. MAYBE WE, THE CREW, SHOULD QUERY THE CTLRS ANYTIME WHEN ON A HEADING AND ASK WHAT CAN BE EXPECTED NEXT.

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.