Small aircraft aircraft landing gear collapsed during landing.

Attributes
ACN	218523
Time
Date	199208
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lwm
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : clt
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 25 flight time total : 2300 flight time type : 185
ASRS Report	218523
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I picked up small aircraft aircraft from annual inspection aug/thu/92. Did extensive preflight and flew plane from lwm to psm. Following morning, again preflted and flew to lwm. Gear would not retract but green light went out and I could not get it back on even after going through emergency gear extension procedure. I could see, through a mirror on engine cowling, that the nose wheel appeared down, and though I pulled the circuit relay and manually attempted to turn handle to lock gear, I was unable to get green light even after resetting circuit relay and checking circuit breaker. I informed lawrence tower of my problem and did a fly-by to which the controller said the gear 'appeared down and locked.' my passenger (my wife) who is also a pilot and has been trained in emergency procedures, also tried extending the gear again, as did I before the fly-by. Upon landing the left gear folded. No injury and minimal damage. To date, no information as to what caused gear to fail and why we couldn't extend it manually to lock.

Original NASA ASRS Text

Title: SMA ACFT LNDG GEAR COLLAPSED DURING LNDG.

Narrative: I PICKED UP SMA ACFT FROM ANNUAL INSPECTION AUG/THU/92. DID EXTENSIVE PREFLT AND FLEW PLANE FROM LWM TO PSM. FOLLOWING MORNING, AGAIN PREFLTED AND FLEW TO LWM. GEAR WOULD NOT RETRACT BUT GREEN LIGHT WENT OUT AND I COULD NOT GET IT BACK ON EVEN AFTER GOING THROUGH EMER GEAR EXTENSION PROC. I COULD SEE, THROUGH A MIRROR ON ENG COWLING, THAT THE NOSE WHEEL APPEARED DOWN, AND THOUGH I PULLED THE CIRCUIT RELAY AND MANUALLY ATTEMPTED TO TURN HANDLE TO LOCK GEAR, I WAS UNABLE TO GET GREEN LIGHT EVEN AFTER RESETTING CIRCUIT RELAY AND CHKING CIRCUIT BREAKER. I INFORMED LAWRENCE TWR OF MY PROBLEM AND DID A FLY-BY TO WHICH THE CTLR SAID THE GEAR 'APPEARED DOWN AND LOCKED.' MY PAX (MY WIFE) WHO IS ALSO A PLT AND HAS BEEN TRAINED IN EMER PROCS, ALSO TRIED EXTENDING THE GEAR AGAIN, AS DID I BEFORE THE FLY-BY. UPON LNDG THE L GEAR FOLDED. NO INJURY AND MINIMAL DAMAGE. TO DATE, NO INFO AS TO WHAT CAUSED GEAR TO FAIL AND WHY WE COULDN'T EXTEND IT MANUALLY TO LOCK.

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.