Narrative:

This was the third day in a row of early get-ups followed by long days. The pilot was in the left seat and said that all checklist items were complete up to starting the engines. I boarded the passenger, then got into the right seat, catching up with the PIC who was starting engines. During the line-up check, I realized that the PIC had not turned on the position lights or rotating beacon. While we had used taxi lights for ground operations and were visible to other aircraft, we could have done better. While the situation was quickly corrected, it pointed out that more diligence under the circumstances was warranted. Long days, tired crew, late passenger, quickly improving WX and being rushed to complete predep items set up this situation. With 20000 hours between 2 pilots, you would not expect to miss such simple items. Lesson learned.

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Original NASA ASRS Text

Title: CONTRARY TO FARS, LEAR 35 CAPT FORGOT TO TURN ON ACFT POS AND ANTI COLLISION LIGHTS PRIOR TO TAXI OUT.

Narrative: THIS WAS THE THIRD DAY IN A ROW OF EARLY GET-UPS FOLLOWED BY LONG DAYS. THE PLT WAS IN THE L SEAT AND SAID THAT ALL CHKLIST ITEMS WERE COMPLETE UP TO STARTING THE ENGS. I BOARDED THE PAX, THEN GOT INTO THE R SEAT, CATCHING UP WITH THE PIC WHO WAS STARTING ENGS. DURING THE LINE-UP CHK, I REALIZED THAT THE PIC HAD NOT TURNED ON THE POS LIGHTS OR ROTATING BEACON. WHILE WE HAD USED TAXI LIGHTS FOR GND OPS AND WERE VISIBLE TO OTHER ACFT, WE COULD HAVE DONE BETTER. WHILE THE SIT WAS QUICKLY CORRECTED, IT POINTED OUT THAT MORE DILIGENCE UNDER THE CIRCUMSTANCES WAS WARRANTED. LONG DAYS, TIRED CREW, LATE PAX, QUICKLY IMPROVING WX AND BEING RUSHED TO COMPLETE PREDEP ITEMS SET UP THIS SIT. WITH 20000 HRS BTWN 2 PLTS, YOU WOULD NOT EXPECT TO MISS SUCH SIMPLE ITEMS. LESSON LEARNED.

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.