Narrative:

After completing before start and pushback/start checklist, we pushed back and called ewr ground for taxi. While taxiing to runway 22R at taxiway west for takeoff, we completed the taxi checklist and delayed start checklist. As we were cleared onto runway 22R at taxiway west for takeoff, I called for the final items of the before takeoff checklist. I looked at the lights above the first officer and saw that he had mistakenly turned on the strobe light on the pushback/start checklist. I directed him to turn on the anti-collision light and we completed the takeoff checklist.

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Original NASA ASRS Text

Title: B737 FO TURNED ON THE STROBE LIGHTS INSTEAD OF THE ANTI-COLLISION LIGHTS WHEN THEY WERE READY FOR PUSHBACK.

Narrative: AFTER COMPLETING BEFORE START AND PUSHBACK/START CHKLIST, WE PUSHED BACK AND CALLED EWR GND FOR TAXI. WHILE TAXIING TO RWY 22R AT TXWY W FOR TKOF, WE COMPLETED THE TAXI CHKLIST AND DELAYED START CHKLIST. AS WE WERE CLRED ONTO RWY 22R AT TXWY W FOR TKOF, I CALLED FOR THE FINAL ITEMS OF THE BEFORE TKOF CHKLIST. I LOOKED AT THE LIGHTS ABOVE THE FO AND SAW THAT HE HAD MISTAKENLY TURNED ON THE STROBE LIGHT ON THE PUSHBACK/START CHKLIST. I DIRECTED HIM TO TURN ON THE ANTI-COLLISION LIGHT AND WE COMPLETED THE TKOF CHKLIST.

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.