GA small aircraft gear warning malfunction and subsequent maintenance lod write-up.

Attributes
ACN	179495
Time
Date	199105
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : y12
State Reference	MN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Retractable Gear
Flight Phase	ground : preflight
Person 1
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 1400
ASRS Report	179495
Events
Anomaly	aircraft equipment problem : critical non adherence : far other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact other
Consequence	faa : investigated
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flew normal IFR flight with 3 approachs. As we prepared to lower the gear during last approach, noticed the green 'gear dn' light was on, as well as the amber 'gear up' light. Pressing the green light caused it to flicker a bit, but it stayed on. The gear was extended, and all indications were normal. Both mains were visually checked in position and the nose gear via the mirror. We landed west/O further troubleshooting due to a trw approaching the field. Normal hydraulic pressure appeared to be present. After normal landing and taxi, I wrote up the problem in the club maintenance log and left a message on the club answering machine that, 'that green light stays on with gear up or down--otherwise gear works ok.' this was for mechanic's and member's information. Several days later another club member attempted to take an FAA 609 check, knowing about the write-up, saying he thought it would be ok since I said, 'otherwise the gear works ok.' I didn't ground it since a maintenance person was working on it.

Original NASA ASRS Text

Title: GA SMA GEAR WARNING MALFUNCTION AND SUBSEQUENT MAINTENANCE LOD WRITE-UP.

Narrative: FLEW NORMAL IFR FLT WITH 3 APCHS. AS WE PREPARED TO LOWER THE GEAR DURING LAST APCH, NOTICED THE GREEN 'GEAR DN' LIGHT WAS ON, AS WELL AS THE AMBER 'GEAR UP' LIGHT. PRESSING THE GREEN LIGHT CAUSED IT TO FLICKER A BIT, BUT IT STAYED ON. THE GEAR WAS EXTENDED, AND ALL INDICATIONS WERE NORMAL. BOTH MAINS WERE VISUALLY CHKED IN POS AND THE NOSE GEAR VIA THE MIRROR. WE LANDED W/O FURTHER TROUBLESHOOTING DUE TO A TRW APCHING THE FIELD. NORMAL HYD PRESSURE APPEARED TO BE PRESENT. AFTER NORMAL LNDG AND TAXI, I WROTE UP THE PROB IN THE CLUB MAINT LOG AND LEFT A MESSAGE ON THE CLUB ANSWERING MACHINE THAT, 'THAT GREEN LIGHT STAYS ON WITH GEAR UP OR DOWN--OTHERWISE GEAR WORKS OK.' THIS WAS FOR MECH'S AND MEMBER'S INFO. SEVERAL DAYS LATER ANOTHER CLUB MEMBER ATTEMPTED TO TAKE AN FAA 609 CHK, KNOWING ABOUT THE WRITE-UP, SAYING HE THOUGHT IT WOULD BE OK SINCE I SAID, 'OTHERWISE THE GEAR WORKS OK.' I DIDN'T GND IT SINCE A MAINT PERSON WAS WORKING ON IT.

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.