Narrative:

We were cleared from north of albany VOR to islip, ny, via direct albany V130 norwich VOR V308 boros intersection direct calverton VOR direct islip. We were navigating V130 from alb to bdl. ATC began inquiring as to our position, altitude and clearance. He then cleared us direct to norwich (orw). Apparently, both crew members had mistakenly tracked the 204 degree radial outbound from bradley (bdl) VOR, thinking that they were tracking V308 which is the 204 degree radial outbound from norwich (orw) VOR. The schedule for this trip required that the crew wake up at XA00 am. I had been unable to fall asleep until after midnight. Therefore, I was operating on less than 3 hours sleep in the preceding 48 hours. This particular trip was far part 91. However, my employer also operates in accordance with part 135. The company gives no consideration to rest provided the trip can be scheduled 'legally'. The incident was a matter of simple chart misinterp. The significant contributing factor was crew fatigue. The only remedy to this type of situation would be regulation requiring rest periods for pilots who operate under parts 91 and 135 regardless of whether a flight is 91 or 135. Additional consideration should be given to rest and duty cycles. There are situations where a crew can be 'legal' with regard to required rest yet still fatigued because prior duty cycles had their physiological clock out of sequence. They many times are physically unable to rest during an assigned rest period.

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Original NASA ASRS Text

Title: HDG TRACK POS DEV WHEN FLC BEHAVIOR FATIGUE ALLOWS AERONAUTICAL CHART PRESENTATION MISINTERP.

Narrative: WE WERE CLRED FROM N OF ALBANY VOR TO ISLIP, NY, VIA DIRECT ALBANY V130 NORWICH VOR V308 BOROS INTXN DIRECT CALVERTON VOR DIRECT ISLIP. WE WERE NAVING V130 FROM ALB TO BDL. ATC BEGAN INQUIRING AS TO OUR POS, ALT AND CLRNC. HE THEN CLRED US DIRECT TO NORWICH (ORW). APPARENTLY, BOTH CREW MEMBERS HAD MISTAKENLY TRACKED THE 204 DEG RADIAL OUTBOUND FROM BRADLEY (BDL) VOR, THINKING THAT THEY WERE TRACKING V308 WHICH IS THE 204 DEG RADIAL OUTBOUND FROM NORWICH (ORW) VOR. THE SCHEDULE FOR THIS TRIP REQUIRED THAT THE CREW WAKE UP AT XA00 AM. I HAD BEEN UNABLE TO FALL ASLEEP UNTIL AFTER MIDNIGHT. THEREFORE, I WAS OPERATING ON LESS THAN 3 HRS SLEEP IN THE PRECEDING 48 HRS. THIS PARTICULAR TRIP WAS FAR PART 91. HOWEVER, MY EMPLOYER ALSO OPERATES IN ACCORDANCE WITH PART 135. THE COMPANY GIVES NO CONSIDERATION TO REST PROVIDED THE TRIP CAN BE SCHEDULED 'LEGALLY'. THE INCIDENT WAS A MATTER OF SIMPLE CHART MISINTERP. THE SIGNIFICANT CONTRIBUTING FACTOR WAS CREW FATIGUE. THE ONLY REMEDY TO THIS TYPE OF SITUATION WOULD BE REG REQUIRING REST PERIODS FOR PLTS WHO OPERATE UNDER PARTS 91 AND 135 REGARDLESS OF WHETHER A FLT IS 91 OR 135. ADDITIONAL CONSIDERATION SHOULD BE GIVEN TO REST AND DUTY CYCLES. THERE ARE SITUATIONS WHERE A CREW CAN BE 'LEGAL' WITH REGARD TO REQUIRED REST YET STILL FATIGUED BECAUSE PRIOR DUTY CYCLES HAD THEIR PHYSIOLOGICAL CLOCK OUT OF SEQUENCE. THEY MANY TIMES ARE PHYSICALLY UNABLE TO REST DURING AN ASSIGNED REST PERIOD.

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.