Narrative:

After takeoff, our company procedure calls for a turn at 400 ft MSL to join dca 341 degree radial and at 2.7 DME from dca, turn left to join dca 328 degree radial. At 2.7 DME I was following the flight director which was later found to be at 15 degrees of bank instead of normal 25 degrees of bank. I was slow in the turn and was prompted by ATC to remain over the potomac river and away from P56. I estimate we were less than 1 mi from the prohibited area, but did not enter it. The captain took control of the airplane and increased the bank to the left. We queried ATC and no problem was reported to us from the ATC facility. A more thorough preflight of the MCP should help prevent this from occurring in the future. Supplemental information from acn 490650: bank and indicator set to 15 degrees (should have been 30 degrees) on preflight. First officer following command bars. Captain, heads down pushing buttons, did not notice shallow bank (15 degrees). Instructed first officer to increase bank left. Slow (first officer) to respond. Captain took control of aircraft for mac left bank allowed to correct to course.

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Original NASA ASRS Text

Title: A LESS THAN STANDARD RATE OF TURN CAUSES ATC DEP CTLR TO REMIND ACR CREW NOT TO STRAY INTO P56 ON DEP FROM DCA, VA.

Narrative: AFTER TKOF, OUR COMPANY PROC CALLS FOR A TURN AT 400 FT MSL TO JOIN DCA 341 DEG RADIAL AND AT 2.7 DME FROM DCA, TURN L TO JOIN DCA 328 DEG RADIAL. AT 2.7 DME I WAS FOLLOWING THE FLT DIRECTOR WHICH WAS LATER FOUND TO BE AT 15 DEGS OF BANK INSTEAD OF NORMAL 25 DEGS OF BANK. I WAS SLOW IN THE TURN AND WAS PROMPTED BY ATC TO REMAIN OVER THE POTOMAC RIVER AND AWAY FROM P56. I ESTIMATE WE WERE LESS THAN 1 MI FROM THE PROHIBITED AREA, BUT DID NOT ENTER IT. THE CAPT TOOK CTL OF THE AIRPLANE AND INCREASED THE BANK TO THE L. WE QUERIED ATC AND NO PROB WAS RPTED TO US FROM THE ATC FACILITY. A MORE THOROUGH PREFLT OF THE MCP SHOULD HELP PREVENT THIS FROM OCCURRING IN THE FUTURE. SUPPLEMENTAL INFO FROM ACN 490650: BANK AND INDICATOR SET TO 15 DEGS (SHOULD HAVE BEEN 30 DEGS) ON PREFLT. FO FOLLOWING COMMAND BARS. CAPT, HEADS DOWN PUSHING BUTTONS, DID NOT NOTICE SHALLOW BANK (15 DEGS). INSTRUCTED FO TO INCREASE BANK L. SLOW (FO) TO RESPOND. CAPT TOOK CTL OF ACFT FOR MAC L BANK ALLOWED TO CORRECT TO COURSE.

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.