<< >> NASA ASRS Report 370450, June 1997

G3 aircraft on descent and intercept clearance. Flight crew tuned wrong VOR resulting in track deviation. Approach controller corrected them and then the flight crew descended below assigned altitude.

Attributes
ACN	370450
Time
Date	199706
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : oak airport : sfo
State Reference	CA
Altitude	msl bound lower : 14700 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak tower : cho
Operator	general aviation : corporate
Make Model Name	Gulfstream III
Operating Under FAR Part	Part 91
Navigation In Use	Other
Flight Phase	descent : approach descent other
Route In Use	enroute airway : oak
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 200 flight time total : 4200 flight time type : 700
ASRS Report	370450
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude 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:

Aircraft was given a dsnct clearance and heading to intercept sfo 095 degree radial. Copilot set up oak VOR by mistake. Started to intercept when advised by ATC that we weren't established on correct radial. Given a vector for the visual to re-intercept charted visual procedure. That vector put us on a course where we were 300 ft lower than charted visual assigned.

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Original NASA ASRS Text

Title: G3 ACFT ON DSCNT AND INTERCEPT CLRNC. FLC TUNED WRONG VOR RESULTING IN TRACK DEV. APCH CTLR CORRECTED THEM AND THEN THE FLC DSNDED BELOW ASSIGNED ALT.

Narrative: ACFT WAS GIVEN A DSNCT CLRNC AND HEADING TO INTERCEPT SFO 095 DEG RADIAL. COPLT SET UP OAK VOR BY MISTAKE. STARTED TO INTERCEPT WHEN ADVISED BY ATC THAT WE WEREN'T ESTABLISHED ON CORRECT RADIAL. GIVEN A VECTOR FOR THE VISUAL TO RE-INTERCEPT CHARTED VISUAL PROC. THAT VECTOR PUT US ON A COURSE WHERE WE WERE 300 FT LOWER THAN CHARTED VISUAL ASSIGNED.

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.