C172 training flight made incorrect traffic pattern entry.

Attributes
ACN	576669
Time
Date	200303
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rdm.airport
State Reference	OR
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : rdm.tower
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	descent : approach
Route In Use	approach : traffic pattern approach : instrument non precision
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi
Experience	flight time last 90 days : 30 flight time total : 420 flight time type : 415
ASRS Report	576669
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	conflict : airborne less severe non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on a practice VOR-a approach, we were instructed to circle east of the field and enter on a left base for runway 10. Busy as I was with a first flight instrument student, I remember hearing 'base for 10' and must have made up my mind we needed a right base. So I had my student look up in time to slow the plane and land. This was also my first instrument instruction flight, therefore, I was busy keeping an eye on our situation. As we were on very short final, tower called us and cleared us to land. 2 errors on my part -- won't happen again!

Original NASA ASRS Text

Title: C172 TRAINING FLT MADE INCORRECT TFC PATTERN ENTRY.

Narrative: WHILE ON A PRACTICE VOR-A APCH, WE WERE INSTRUCTED TO CIRCLE E OF THE FIELD AND ENTER ON A L BASE FOR RWY 10. BUSY AS I WAS WITH A FIRST FLT INST STUDENT, I REMEMBER HEARING 'BASE FOR 10' AND MUST HAVE MADE UP MY MIND WE NEEDED A R BASE. SO I HAD MY STUDENT LOOK UP IN TIME TO SLOW THE PLANE AND LAND. THIS WAS ALSO MY FIRST INST INSTRUCTION FLT, THEREFORE, I WAS BUSY KEEPING AN EYE ON OUR SIT. AS WE WERE ON VERY SHORT FINAL, TWR CALLED US AND CLRED US TO LAND. 2 ERRORS ON MY PART -- WON'T HAPPEN AGAIN!

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.