B727 crew advised off course arriving lga.

Attributes
ACN	434271
Time
Date	199904
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : dpk.vor
State Reference	NY
Altitude	msl single value : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw.artcc
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	cruise : level
Route In Use	arrival star : rockdale two
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 210 flight time total : 15000 flight time type : 3500
ASRS Report	434271
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 2500 flight time type : 500
ASRS Report	434840
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other spatial deviation
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued advisory flight crew : returned to intended course
Supplementary
Problem Areas	Weather Airspace Structure Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Bos to lga. On route segment from bdl VOR 225 degree radial, 62 DME to valre intersection, then intercept dpk (deer park, ny) 338 degree radial, etc. Just before valre intersection, ATC advised we were 6 mi south of course (bdl 255 degree radial). We'd commenced our left turn to intercept the dpk 338 degree radial (approximately 90 degree intercept). Possibly our turn was early, coupled with strong northwest winds, wavering VOR/navigation radial indications, we were off. DME showed 4 mi, south of valre intersection (dpk 338 degree radial, 43 DME).

Original NASA ASRS Text

Title: B727 CREW ADVISED OFF COURSE ARRIVING LGA.

Narrative: BOS TO LGA. ON RTE SEGMENT FROM BDL VOR 225 DEG RADIAL, 62 DME TO VALRE INTXN, THEN INTERCEPT DPK (DEER PARK, NY) 338 DEG RADIAL, ETC. JUST BEFORE VALRE INTXN, ATC ADVISED WE WERE 6 MI S OF COURSE (BDL 255 DEG RADIAL). WE'D COMMENCED OUR L TURN TO INTERCEPT THE DPK 338 DEG RADIAL (APPROX 90 DEG INTERCEPT). POSSIBLY OUR TURN WAS EARLY, COUPLED WITH STRONG NW WINDS, WAVERING VOR/NAV RADIAL INDICATIONS, WE WERE OFF. DME SHOWED 4 MI, S OF VALRE INTXN (DPK 338 DEG RADIAL, 43 DME).

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.