LJ35 crew had track deviation in ZDC class airspace.

Attributes
ACN	496920
Time
Date	200101
Day	Tue
Local Time Of Day	1201 To 1800
Place
State Reference	NC
Altitude	msl single value : 39000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air taxi
Make Model Name	Learjet 35
Operating Under FAR Part	Part 135
Flight Phase	cruise : level
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 5900 flight time type : 3000
ASRS Report	496920
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	non adherence : published procedure non adherence : company policies non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued alert controller : issued new clearance none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While en route from hpn-mia at FL390, my first officer was flying the aircraft. We were cleared direct to iso, which was on our flight plan. After iso, we were supposed to join an airway. My first officer selected the navigation mode on the autoplt to go direct iso. When we got to the VORTAC, the GNS (our navigation source) did not autosequence to the next fix on the airway. My first officer did not notice the failure and we were flying merely a heading for 6 or 7 mins. ATC queried the situation and said we were way off course. They then cleared us direct to omn VORTAC. No incidents had occurred.

Original NASA ASRS Text

Title: LJ35 CREW HAD TRACK DEV IN ZDC CLASS AIRSPACE.

Narrative: WHILE ENRTE FROM HPN-MIA AT FL390, MY FO WAS FLYING THE ACFT. WE WERE CLRED DIRECT TO ISO, WHICH WAS ON OUR FLT PLAN. AFTER ISO, WE WERE SUPPOSED TO JOIN AN AIRWAY. MY FO SELECTED THE NAV MODE ON THE AUTOPLT TO GO DIRECT ISO. WHEN WE GOT TO THE VORTAC, THE GNS (OUR NAV SOURCE) DID NOT AUTOSEQUENCE TO THE NEXT FIX ON THE AIRWAY. MY FO DID NOT NOTICE THE FAILURE AND WE WERE FLYING MERELY A HDG FOR 6 OR 7 MINS. ATC QUERIED THE SIT AND SAID WE WERE WAY OFF COURSE. THEY THEN CLRED US DIRECT TO OMN VORTAC. NO INCIDENTS HAD OCCURRED.

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.