Aircraft equipment problem. Landing gear indicator gear up landing.

Attributes
ACN	311369
Time
Date	199507
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : acy
State Reference	NJ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Super Skymaster
Operating Under FAR Part	Part 91
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 550 flight time type : 25
ASRS Report	311369
Events
Anomaly	aircraft equipment problem : critical conflict : ground critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : detected after the fact
Consequence	faa : investigated other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I was on a vectored approach to runway 31. At 6.4 mi when I lowered the landing gear lever, felt the appropriate thud in airstream resistance, observed the gear as it began to descend, and observed the green gear light illuminate. I then proceeded on my glide course at a 500 FPM descent to 500 ft from threshold location near the centerline of runway 31, with the green gear light on and without any activation of the gear warning horn (documentable via the tower tape). Upon touchdown it became evident the gear were retracted. The front engine had sudden stoppage, the rear engine did not and was shut down as the appropriate emergency procedures were conducted, the tower notified, the airplane cleaned up, etc, and evacuate/evacuationed. About 15 seconds after touchdown, with the green gear light still on, the gear horn went off. Upon recovery of the disabled aircraft by the crew headed by mr X, it was noted the green gear light was on way before the gear was extended and in a locked position (see mr X report). This, in conjunction with the above data, clearly point to electrical-mechanical failure, probably due to overheated sensors on the hottest day of the yr. This is also the conclusion of mr Y of the FAA, philadelphia.

Original NASA ASRS Text

Title: ACFT EQUIP PROB. LNDG GEAR INDICATOR GEAR UP LNDG.

Narrative: I WAS ON A VECTORED APCH TO RWY 31. AT 6.4 MI WHEN I LOWERED THE LNDG GEAR LEVER, FELT THE APPROPRIATE THUD IN AIRSTREAM RESISTANCE, OBSERVED THE GEAR AS IT BEGAN TO DSND, AND OBSERVED THE GREEN GEAR LIGHT ILLUMINATE. I THEN PROCEEDED ON MY GLIDE COURSE AT A 500 FPM DSCNT TO 500 FT FROM THRESHOLD LOCATION NEAR THE CTRLINE OF RWY 31, WITH THE GREEN GEAR LIGHT ON AND WITHOUT ANY ACTIVATION OF THE GEAR WARNING HORN (DOCUMENTABLE VIA THE TWR TAPE). UPON TOUCHDOWN IT BECAME EVIDENT THE GEAR WERE RETRACTED. THE FRONT ENG HAD SUDDEN STOPPAGE, THE REAR ENG DID NOT AND WAS SHUT DOWN AS THE APPROPRIATE EMER PROCS WERE CONDUCTED, THE TWR NOTIFIED, THE AIRPLANE CLEANED UP, ETC, AND EVACED. ABOUT 15 SECONDS AFTER TOUCHDOWN, WITH THE GREEN GEAR LIGHT STILL ON, THE GEAR HORN WENT OFF. UPON RECOVERY OF THE DISABLED ACFT BY THE CREW HEADED BY MR X, IT WAS NOTED THE GREEN GEAR LIGHT WAS ON WAY BEFORE THE GEAR WAS EXTENDED AND IN A LOCKED POS (SEE MR X RPT). THIS, IN CONJUNCTION WITH THE ABOVE DATA, CLRLY POINT TO ELECTRICAL-MECHANICAL FAILURE, PROBABLY DUE TO OVERHEATED SENSORS ON THE HOTTEST DAY OF THE YR. THIS IS ALSO THE CONCLUSION OF MR Y OF THE FAA, PHILADELPHIA.

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.