Instructor pilot of C172 takes evasive action to avoid near midair collision with helicopter in patt...

Attributes
ACN	638024
Time
Date	200411
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lxn.airport
State Reference	NE
Altitude	agl single value : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	None
Aircraft 2
Make Model Name	Helicopter
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : private pilot : multi engine pilot : commercial pilot : cfi
Experience	flight time last 90 days : 14 flight time total : 1690 flight time type : 400
ASRS Report	638024
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	non adherence : published procedure non adherence other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 400 vertical : 0
Supplementary
Problem Areas	Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Operational Deviation Operational Error Inter Facility Coordination Failure Intra Facility Coordination Failure

Narrative:

I was instructing a new student. We were on downwind when a helicopter came very close to flying through our flight path. We both took evasive action. He had not made any radio calls.

Original NASA ASRS Text

Title: INSTRUCTOR PLT OF C172 TAKES EVASIVE ACTION TO AVOID NMAC WITH HELI IN PATTERN AT LXN.

Narrative: I WAS INSTRUCTING A NEW STUDENT. WE WERE ON DOWNWIND WHEN A HELI CAME VERY CLOSE TO FLYING THROUGH OUR FLT PATH. WE BOTH TOOK EVASIVE ACTION. HE HAD NOT MADE ANY RADIO CALLS.

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.

Instructor pilot of C172 takes evasive action to avoid near midair collision with helicopter in pattern at lxn.