A B757-200 first officer reported a track deviation and P-56 encroachment on departure from dca. Rep...

Narrative:

FMS was set up according to company departure procedure. I briefed the captain of the fixes and that I planned to LNAV to the fixes once established on the dca 343 radial by raw data. The takeoff was normal and [I] commenced an immediate turn (heading select) so as stay over the river. I was using raw data to monitor the radial intercept; at 1000ft AGL; we were on the 343 radial and I called for climb power; LNAV; flaps 1. Auto pilot on around 1200 ft. Auto pilot appeared to acquire the radial after a couple of heading oscillations but still on the radial according to raw data. The FMS was set to fly the DCA343/2.7 fix then to the DCA328/4 fix then outbound on the dca 328 radial as depicted on the procedure page. As we tracked outbound to 2.7 DME fix the autopilot did not turn toward the next fix as expected and the captain advised to turn left. I immediately selected heading and an intercept heading for the 328 radial. On raw data; I used the heading select mode to establish us on the radial. Reengaged LNAV and tracked out normally. Our company procedure takes us too close the the naval observatory in dca (P-56). It requires a course/heading change at a very busy time in the cockpit (a/C cleanup; checklist; and ATC distractions). In this instance; the captain was busy talking to departure control and I was focusing on getting the flaps up before exceeding limitations and did not notice the DME reading. This occurred concurrently at the time of a required course change to avoid P-56. I missed the turn requirement that the autopilot should have accomplished and was late on the turn. According to potomac departure; we violated P-56. I had set up the FMS and briefed the automation level in a manner that I thought would enhance the operation. I would have been better served by hand flying the a/C to the proper outbound radial.

Original NASA ASRS Text

Title: A B757-200 First Officer reported a track deviation and P-56 encroachment on departure from DCA. Reporter observed the departure may be more accurately hand flown rather than LNAV.

Narrative: FMS was set up according to Company Departure Procedure. I briefed the Captain of the fixes and that I planned to LNAV to the fixes once established on the DCA 343 radial by raw data. The takeoff was normal and [I] commenced an immediate turn (HDG select) so as stay over the river. I was using raw data to monitor the radial intercept; at 1000ft AGL; we were on the 343 radial and I called for climb power; LNAV; flaps 1. Auto pilot on around 1200 ft. Auto pilot appeared to acquire the radial after a couple of heading oscillations but still on the radial according to raw data. The FMS was set to fly the DCA343/2.7 fix then to the DCA328/4 fix then outbound on the DCA 328 radial as depicted on the procedure page. As we tracked outbound to 2.7 DME fix the autopilot did not turn toward the next fix as expected and the Captain advised to turn left. I immediately selected Heading and an intercept heading for the 328 radial. On raw data; I used the heading select mode to establish us on the radial. Reengaged LNAV and tracked out normally. Our Company procedure takes us too close the the Naval Observatory in DCA (P-56). It requires a course/heading change at a very busy time in the cockpit (A/C cleanup; checklist; and ATC distractions). In this instance; the Captain was busy talking to Departure Control and I was focusing on getting the flaps up before exceeding limitations and did not notice the DME reading. This occurred concurrently at the time of a required course change to avoid P-56. I missed the turn requirement that the autopilot should have accomplished and was late on the turn. According to Potomac Departure; we violated P-56. I had set up the FMS and briefed the automation level in a manner that I thought would enhance the operation. I would have been better served by hand flying the A/C to the proper outbound radial.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	983073
Time
Date	201112
Local Time Of Day	1201-1800
Place
Locale Reference	PCT.TRACON
State Reference	VA
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Other Co Procedure
Flight Plan	IFR
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 178 Flight Crew Total 25000 Flight Crew Type 4708
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Engineer Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 151 Flight Crew Total 14938 Flight Crew Type 8970
Events
Anomaly	Airspace Violation All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

A B757-200 first officer reported a track deviation and P-56 encroachment on departure from dca. Reporter observed the departure may be more accurately hand flown rather than LNAV.