Flight crew deviation from flight plan filed.

Attributes
ACN	206006
Time
Date	199203
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dny
State Reference	NY
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mdw
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : direct enroute airway : v483
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 1200 flight time type : 100
ASRS Report	206006
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were IFR from syracuse en route to laguardia, ny. (All references to location are found on the use (lo) 25 chart). We were cleared rockdale (rka) V433 tresa. We asked for direct delancey west of rockdale and were cleared as requested. This fix was not part of our route but neither we nor ATC realized this at the time. Once we arrived at delancey, we headed outbound on the similar sounding V483 instead of our planned route of V433 which parallels about 10 mi to the north. We were headed in the correct direction but on the wrong airway. About halfway down the airway, ATC discovered the error and cleared us direct kingston to get us back on our flight plan. The rest of the flight was uneventful. Reason for the occurrence? I think crew fatigue and airways which share similar designations (V433 vs. V483) caused us not to notice that we were on the wrong airway. A mistake of which probably would not have happened to a well rested and more alert crew.

Original NASA ASRS Text

Title: FLC DEV FROM FLT PLAN FILED.

Narrative: WE WERE IFR FROM SYRACUSE ENRTE TO LAGUARDIA, NY. (ALL REFS TO LOCATION ARE FOUND ON THE USE (LO) 25 CHART). WE WERE CLRED ROCKDALE (RKA) V433 TRESA. WE ASKED FOR DIRECT DELANCEY W OF ROCKDALE AND WERE CLRED AS REQUESTED. THIS FIX WAS NOT PART OF OUR RTE BUT NEITHER WE NOR ATC REALIZED THIS AT THE TIME. ONCE WE ARRIVED AT DELANCEY, WE HEADED OUTBOUND ON THE SIMILAR SOUNDING V483 INSTEAD OF OUR PLANNED RTE OF V433 WHICH PARALLELS ABOUT 10 MI TO THE N. WE WERE HEADED IN THE CORRECT DIRECTION BUT ON THE WRONG AIRWAY. ABOUT HALFWAY DOWN THE AIRWAY, ATC DISCOVERED THE ERROR AND CLRED US DIRECT KINGSTON TO GET US BACK ON OUR FLT PLAN. THE REST OF THE FLT WAS UNEVENTFUL. REASON FOR THE OCCURRENCE? I THINK CREW FATIGUE AND AIRWAYS WHICH SHARE SIMILAR DESIGNATIONS (V433 VS. V483) CAUSED US NOT TO NOTICE THAT WE WERE ON THE WRONG AIRWAY. A MISTAKE OF WHICH PROBABLY WOULD NOT HAVE HAPPENED TO A WELL RESTED AND MORE ALERT CREW.

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.