An MD80 admitted that he was right of course during the arrival to sat.

Attributes
ACN	517920
Time
Date	200107
Day	Sat
Local Time Of Day	1201 To 1800
Place
State Reference	TX
Altitude	msl single value : 17000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sat.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : marcs seven
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6000 flight time type : 1500
ASRS Report	517920
Events
Anomaly	non adherence : far non adherence : published procedure non adherence : company policies non adherence : clearance other spatial deviation
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on the marcs 7 arrival into san antonio, first officer flying, showed right on 259 degrees idu first officer's CDI/flight director. Center approach said we were 4 mi off course. No conflicts. Flew ATC's heading after that. ATC did not say there was a problem.

Original NASA ASRS Text

Title: AN MD80 ADMITTED THAT HE WAS R OF COURSE DURING THE ARR TO SAT.

Narrative: WHILE ON THE MARCS 7 ARR INTO SAN ANTONIO, FO FLYING, SHOWED R ON 259 DEGS IDU FO'S CDI/FLT DIRECTOR. CTR APCH SAID WE WERE 4 MI OFF COURSE. NO CONFLICTS. FLEW ATC'S HDG AFTER THAT. ATC DID NOT SAY THERE WAS A PROB.

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.