Did not fly the rosslyn lda approach properly and flew low over building.

Attributes
ACN	147867
Time
Date	199006
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dca
State Reference	DC
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 180 flight time total : 4000
ASRS Report	147867
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I (first officer) was flying plane. I thought the approach in use to dca was the DME lda to runway 18. While being vectored to intercept final approach course, the captain and I realized that the roslyn lda to runway 18 was the approach in use. I reset the frequency and the inbound course and flew the localizer and G/south to the airport. When I had a positive identify of runway 18, I executed a turn over the river and lined up for the runway. Because I did not have time to review the approach plate, I was delayed in making a left turn at the 3.5 iaso fix and overflew the buildings on the west side of the river. Suggestions for improvement. Eliminate one of the 2 lda approachs to runway 18 or if both are required put them on separate plates. Eliminate the localizer depiction of the approach plate at 3.5 mi to show the turn more clearly. On the ATIS, if using the lda approach emphasize that there are 2 lda approachs to dca.

Original NASA ASRS Text

Title: DID NOT FLY THE ROSSLYN LDA APCH PROPERLY AND FLEW LOW OVER BUILDING.

Narrative: I (F/O) WAS FLYING PLANE. I THOUGHT THE APCH IN USE TO DCA WAS THE DME LDA TO RWY 18. WHILE BEING VECTORED TO INTERCEPT FINAL APCH COURSE, THE CAPT AND I REALIZED THAT THE ROSLYN LDA TO RWY 18 WAS THE APCH IN USE. I RESET THE FREQ AND THE INBND COURSE AND FLEW THE LOC AND G/S TO THE ARPT. WHEN I HAD A POSITIVE IDENT OF RWY 18, I EXECUTED A TURN OVER THE RIVER AND LINED UP FOR THE RWY. BECAUSE I DID NOT HAVE TIME TO REVIEW THE APCH PLATE, I WAS DELAYED IN MAKING A L TURN AT THE 3.5 IASO FIX AND OVERFLEW THE BUILDINGS ON THE W SIDE OF THE RIVER. SUGGESTIONS FOR IMPROVEMENT. ELIMINATE ONE OF THE 2 LDA APCHS TO RWY 18 OR IF BOTH ARE REQUIRED PUT THEM ON SEPARATE PLATES. ELIMINATE THE LOC DEPICTION OF THE APCH PLATE AT 3.5 MI TO SHOW THE TURN MORE CLRLY. ON THE ATIS, IF USING THE LDA APCH EMPHASIZE THAT THERE ARE 2 LDA APCHS TO DCA.

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.