Cpt light transport deviation from clearance. Track heading deviation.

Attributes
ACN	129972
Time
Date	198912
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : iad
State Reference	VA
Altitude	msl bound lower : 5000 msl bound upper : 10000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iad
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 7500 flight time type : 60
ASRS Report	129972
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

In the descent, I briefed the co-captain on the approach procedures for the ILS-1 19L. We crossed robrt intersection at 10000', 250 KTS. I started a left turn to 210 degrees and commenced descent to 5000'. The co-captain retuned the navigation radio and reported ILS tuned and idented. While in the turn, the CDI started across and I intercepted the localizer. Approach control called and asked us to reconfirm intercept of 19L. The co-captain rechked the frequency and discovered the error. He had tuned in the frequency for 19R. We vectored to intercept 19L and the approach was completed west/O incident. Unfortunately, we carry only 1 set of approach plates, and they are positioned on the copilot yoke. The co-captain had never flown in the northeast sector before, and I believe this contributed to the incident. As to why I didn't notice the wrong frequency, I have a good memory, but it's a little short! I would have suspected something if I had a flag (navigation) in my CDI, but when the CDI broke, I went for the intercept.

Original NASA ASRS Text

Title: CPT LTT DEVIATION FROM CLRNC. TRACK HEADING DEVIATION.

Narrative: IN THE DSCNT, I BRIEFED THE CO-CAPT ON THE APCH PROCS FOR THE ILS-1 19L. WE CROSSED ROBRT INTXN AT 10000', 250 KTS. I STARTED A LEFT TURN TO 210 DEGS AND COMMENCED DSCNT TO 5000'. THE CO-CAPT RETUNED THE NAV RADIO AND RPTED ILS TUNED AND IDENTED. WHILE IN THE TURN, THE CDI STARTED ACROSS AND I INTERCEPTED THE LOC. APCH CTL CALLED AND ASKED US TO RECONFIRM INTERCEPT OF 19L. THE CO-CAPT RECHKED THE FREQ AND DISCOVERED THE ERROR. HE HAD TUNED IN THE FREQ FOR 19R. WE VECTORED TO INTERCEPT 19L AND THE APCH WAS COMPLETED W/O INCIDENT. UNFORTUNATELY, WE CARRY ONLY 1 SET OF APCH PLATES, AND THEY ARE POSITIONED ON THE COPLT YOKE. THE CO-CAPT HAD NEVER FLOWN IN THE NE SECTOR BEFORE, AND I BELIEVE THIS CONTRIBUTED TO THE INCIDENT. AS TO WHY I DIDN'T NOTICE THE WRONG FREQ, I HAVE A GOOD MEMORY, BUT IT'S A LITTLE SHORT! I WOULD HAVE SUSPECTED SOMETHING IF I HAD A FLAG (NAV) IN MY CDI, BUT WHEN THE CDI BROKE, I WENT FOR THE INTERCEPT.

Data retrieved from NASA's ASRS site as of August 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.