Pilot in small aircraft type aircraft making a practice backcourse ILS approach mistook gear warning for OM indication and started descent. Controller alert caused pilot to wisely abandon approach and make a missed approach. Reorganized for an ILS front course approach.

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Attributes
ACN	168632
Time
Date	199101
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ict
State Reference	KS
Altitude	agl bound lower : 1381 agl bound upper : 1681
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ict
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Retractable Gear
Flight Phase	descent : approach landing : missed approach
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : cfi pilot : commercial
Experience	flight time last 90 days : 40 flight time total : 1600 flight time type : 150
ASRS Report	168632
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : clearance
Independent Detector	other controllera other other : unspecified cockpit
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Backcourse 19L ict. After being vectored onto final approach course and being advised of position, power was reduced to gear operation speed. The gear up warning led me to believe I was over the OM and started to descend. Approach control advised that they were showing me below assigned altitude (not yet at FAF). After xng OM approximately 300' below alert altitude executed missed approach. Accepted vectors to front course ILS 19R.

Original NASA ASRS Text

Title: PLT IN SMA TYPE ACFT MAKING A PRACTICE BACKCOURSE ILS APCH MISTOOK GEAR WARNING FOR OM INDICATION AND STARTED DESCENT. CTLR ALERT CAUSED PLT TO WISELY ABANDON APCH AND MAKE A MISSED APCH. REORGANIZED FOR AN ILS FRONT COURSE APCH.

Narrative: BACKCOURSE 19L ICT. AFTER BEING VECTORED ONTO FINAL APCH COURSE AND BEING ADVISED OF POS, PWR WAS REDUCED TO GEAR OPERATION SPD. THE GEAR UP WARNING LED ME TO BELIEVE I WAS OVER THE OM AND STARTED TO DSND. APCH CTL ADVISED THAT THEY WERE SHOWING ME BELOW ASSIGNED ALT (NOT YET AT FAF). AFTER XNG OM APPROX 300' BELOW ALERT ALT EXECUTED MISSED APCH. ACCEPTED VECTORS TO FRONT COURSE ILS 19R.

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.