Narrative:

Just as I turned onto the runway; I saw an additional turnaround that I did not see while holding short for takeoff. I started questioning myself just as the tower called us to verify our intentions. After realizing our mistake; we vacated the runway and then were given additional taxi instructions and takeoff clearance without incident. After critiquing myself; I feel I made the wrong turn due to two items. While holding short on runway 21; the turnaround in the clearway is hard to see as it is downhill and quite narrow. Also; the commercial airport plate is very misleading as the turnaround is covered with the approach lights diagram and is easy to miss. I feel a NOTAM drawing attention to this would have prevented my wrong turn.callback conversation with reporter revealed the following information: the reporter identified the stopway northeast of taxiway F intersection with runway 21 only after the tower controller questioned their intentions. Even after studying the chart carefully prior to taxiing and at the time of entry onto runway 21; none of the 4 pilots in the flight station identified the stopway as having a turnaround suitable for their type of aircraft. After the tower operator questioned the pilots; they realized that there was another 800 ft in the stopway available and necessary turnaround in that area. Because of the aircraft's weight; the stopway was necessary for takeoff even with a bleeds off performance. The reporter stated if the aircraft had taken off from the taxiway F intersection and had an engine loss; takeoff capability would have been questionable. The reporter suggested including a note on the commercial chart identifying the stopway and turnaround area more clearly.

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Original NASA ASRS Text

Title: AN ACR PLT TURNED ONTO EDFH RWY 21 AT TXWY F IN ERROR; LEAVING USEABLE RWY BEHIND THE ACFT. RPTR CITES CHARTING AND VISIBILITY ISSUES AS CONTRIBUTORY.

Narrative: JUST AS I TURNED ONTO THE RUNWAY; I SAW AN ADDITIONAL TURNAROUND THAT I DID NOT SEE WHILE HOLDING SHORT FOR TKOF. I STARTED QUESTIONING MYSELF JUST AS THE TWR CALLED US TO VERIFY OUR INTENTIONS. AFTER REALIZING OUR MISTAKE; WE VACATED THE RWY AND THEN WERE GIVEN ADDITIONAL TAXI INSTRUCTIONS AND TKOF CLRNC WITHOUT INCIDENT. AFTER CRITIQUING MYSELF; I FEEL I MADE THE WRONG TURN DUE TO TWO ITEMS. WHILE HOLDING SHORT ON RWY 21; THE TURNAROUND IN THE CLEARWAY IS HARD TO SEE AS IT IS DOWNHILL AND QUITE NARROW. ALSO; THE COMMERCIAL ARPT PLATE IS VERY MISLEADING AS THE TURNAROUND IS COVERED WITH THE APCH LIGHTS DIAGRAM AND IS EASY TO MISS. I FEEL A NOTAM DRAWING ATTENTION TO THIS WOULD HAVE PREVENTED MY WRONG TURN.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR IDENTIFIED THE STOPWAY NE OF TXWY F INTXN WITH RWY 21 ONLY AFTER THE TWR CTLR QUESTIONED THEIR INTENTIONS. EVEN AFTER STUDYING THE CHART CAREFULLY PRIOR TO TAXIING AND AT THE TIME OF ENTRY ONTO RWY 21; NONE OF THE 4 PLTS IN THE FLT STATION IDENTIFIED THE STOPWAY AS HAVING A TURNAROUND SUITABLE FOR THEIR TYPE OF ACFT. AFTER THE TWR OPERATOR QUESTIONED THE PLTS; THEY REALIZED THAT THERE WAS ANOTHER 800 FT IN THE STOPWAY AVAILABLE AND NECESSARY TURNAROUND IN THAT AREA. BECAUSE OF THE ACFT'S WT; THE STOPWAY WAS NECESSARY FOR TKOF EVEN WITH A BLEEDS OFF PERFORMANCE. THE RPTR STATED IF THE ACFT HAD TAKEN OFF FROM THE TXWY F INTXN AND HAD AN ENG LOSS; TKOF CAPABILITY WOULD HAVE BEEN QUESTIONABLE. THE RPTR SUGGESTED INCLUDING A NOTE ON THE COMMERCIAL CHART IDENTIFYING THE STOPWAY AND TURNAROUND AREA MORE CLEARLY.

Data retrieved from NASA's ASRS site as of January 2009 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.