Narrative:

Dca was departing runway 1 via the northwest noise abatement departure procedure. A thunderstorm was approaching from the west. An airliner (different company) was cleared into position and hold on runway 1. Said airliner was offered a right turn to 090 degrees for WX avoidance on departure. This clearance was accepted and the airliner departed. We were instructed into position and hold runway 1 and told to take a look. The storm appeared to be moving toward the northwest departure corridor. The tower offered us the same 090 degree heading on departure for WX. This heading was the most direct route away from the approaching storm. We accepted the 090 degree heading and were cleared for takeoff. Gusty winds began at rotation, but rotation and climb out were completed normally. An immediate right turn 090 degrees was commenced, per sops. Bank angle varied only slightly due to gusty wind conditions. A further turn to 120 degrees was issued by tower prior to switching us to departure control. This turn was complied with without delay. Departure control issued turns to the north, vectoring us on course. ATC never indicated any wrongdoing or penetration of P-56. If an immediate standard rate turn following sops cannot keep us out of P-56, then this should be noted on the airport information page. Otherwise our assumption would be that coordination has been made and sops should be followed to proceed eastbound.

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Original NASA ASRS Text

Title: PROX TO PROHIBITED AREA P56 WAS THE PRIMARY CONCERN OF A DEP B737-500 PIC WHEN VECTORED E DURING A WX AVOIDANCE DEP PROC OFF RWY 1 FROM DCA, DC.

Narrative: DCA WAS DEPARTING RWY 1 VIA THE NW NOISE ABATEMENT DEP PROC. A TSTM WAS APCHING FROM THE W. AN AIRLINER (DIFFERENT COMPANY) WAS CLRED INTO POS AND HOLD ON RWY 1. SAID AIRLINER WAS OFFERED A R TURN TO 090 DEGS FOR WX AVOIDANCE ON DEP. THIS CLRNC WAS ACCEPTED AND THE AIRLINER DEPARTED. WE WERE INSTRUCTED INTO POS AND HOLD RWY 1 AND TOLD TO TAKE A LOOK. THE STORM APPEARED TO BE MOVING TOWARD THE NW DEP CORRIDOR. THE TWR OFFERED US THE SAME 090 DEG HDG ON DEP FOR WX. THIS HEADING WAS THE MOST DIRECT RTE AWAY FROM THE APCHING STORM. WE ACCEPTED THE 090 DEG HDG AND WERE CLRED FOR TKOF. GUSTY WINDS BEGAN AT ROTATION, BUT ROTATION AND CLBOUT WERE COMPLETED NORMALLY. AN IMMEDIATE R TURN 090 DEGS WAS COMMENCED, PER SOPS. BANK ANGLE VARIED ONLY SLIGHTLY DUE TO GUSTY WIND CONDITIONS. A FURTHER TURN TO 120 DEGS WAS ISSUED BY TWR PRIOR TO SWITCHING US TO DEP CTL. THIS TURN WAS COMPLIED WITH WITHOUT DELAY. DEP CTL ISSUED TURNS TO THE N, VECTORING US ON COURSE. ATC NEVER INDICATED ANY WRONGDOING OR PENETRATION OF P-56. IF AN IMMEDIATE STANDARD RATE TURN FOLLOWING SOPS CANNOT KEEP US OUT OF P-56, THEN THIS SHOULD BE NOTED ON THE ARPT INFO PAGE. OTHERWISE OUR ASSUMPTION WOULD BE THAT COORD HAS BEEN MADE AND SOPS SHOULD BE FOLLOWED TO PROCEED EBOUND.

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.