Small aircraft with fresh maintenance work has nose wheel collapse on landing.

Attributes
ACN	155700
Time
Date	199008
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pdk
State Reference	GA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ewr
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 43 flight time total : 340
ASRS Report	155700
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I was flying the plane back from berry hill, stockbridge, GA when the plane had some minor repairs, one of which was the yellow in transit light was coming on when it shouldn't. The authority/authorized aircraft mechanic had tested the gears and all looked ok. We were on tower frequency for landing on 20L. Landing gear was put down 5 mi out (tower confirmed afterward that landing gear was down--tower controller as well as the airport manager said gear had obviously been down). All was normal on landing flare, T/D, pwrback, but the nose kept going down. The plane came to stop on runway. Shut off all switches (master), ignition, fuel and left plane. It appears the gear was in place but not locked, however we saw no warning light to that effect. It appears all necessary procedures were done to have a safe landing. No suggestions at this time as to how to prevent recurrence.

Original NASA ASRS Text

Title: SMA WITH FRESH MAINTENANCE WORK HAS NOSE WHEEL COLLAPSE ON LNDG.

Narrative: I WAS FLYING THE PLANE BACK FROM BERRY HILL, STOCKBRIDGE, GA WHEN THE PLANE HAD SOME MINOR REPAIRS, ONE OF WHICH WAS THE YELLOW IN TRANSIT LIGHT WAS COMING ON WHEN IT SHOULDN'T. THE AUTH ACFT MECH HAD TESTED THE GEARS AND ALL LOOKED OK. WE WERE ON TWR FREQ FOR LNDG ON 20L. LNDG GEAR WAS PUT DOWN 5 MI OUT (TWR CONFIRMED AFTERWARD THAT LNDG GEAR WAS DOWN--TWR CTLR AS WELL AS THE ARPT MGR SAID GEAR HAD OBVIOUSLY BEEN DOWN). ALL WAS NORMAL ON LNDG FLARE, T/D, PWRBACK, BUT THE NOSE KEPT GOING DOWN. THE PLANE CAME TO STOP ON RWY. SHUT OFF ALL SWITCHES (MASTER), IGNITION, FUEL AND LEFT PLANE. IT APPEARS THE GEAR WAS IN PLACE BUT NOT LOCKED, HOWEVER WE SAW NO WARNING LIGHT TO THAT EFFECT. IT APPEARS ALL NECESSARY PROCS WERE DONE TO HAVE A SAFE LNDG. NO SUGGESTIONS AT THIS TIME AS TO HOW TO PREVENT RECURRENCE.

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.