Gear up landing in world war ii replica aircraft.

Attributes
ACN	247897
Time
Date	199307
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : adm
State Reference	OK
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	descent : approach landing other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 300 flight time total : 14500 flight time type : 2
ASRS Report	247897
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

While flying an experimental world war ii fighter replica as part of an ongoing flight test program involving prototype aircraft with a fully retractable landing gear, pilot landed aircraft with main gear up and tailwheel down and locked. Landing gear handle was placed in down position and properly seated and landing gear downlock logic indicated '3 green' (no red out-of-sequence lights). Pilot reported to tower 'abeam 17, 3 down and locked, full stop.' pilot completed 'gump' check on downwind noting a safe condition. An onboard video camera operating during the flight confirms this 'safe' condition. An investigation to determine what mode of operation or specific sequence of events could lead to this erroneous safe condition is underway at this time. I am strongly recommending a mechanical safe indication to backup or replace current electrical switches now installed. Furthermore, a simple mirror installed until a system proves itself could have saved the day. Ground crew hand-held radio did not function when needed. Aircraft touched down at 65 mph and slid on centerline 167 ft. Minor damage to aircraft cooling dog house resulted and complete destruction of wood propeller. Aircraft returned to service in 48 hours -- no injuries.

Original NASA ASRS Text

Title: GEAR UP LNDG IN WORLD WAR II REPLICA ACFT.

Narrative: WHILE FLYING AN EXPERIMENTAL WORLD WAR II FIGHTER REPLICA AS PART OF AN ONGOING FLT TEST PROGRAM INVOLVING PROTOTYPE ACFT WITH A FULLY RETRACTABLE LNDG GEAR, PLT LANDED ACFT WITH MAIN GEAR UP AND TAILWHEEL DOWN AND LOCKED. LNDG GEAR HANDLE WAS PLACED IN DOWN POS AND PROPERLY SEATED AND LNDG GEAR DOWNLOCK LOGIC INDICATED '3 GREEN' (NO RED OUT-OF-SEQUENCE LIGHTS). PLT RPTED TO TWR 'ABEAM 17, 3 DOWN AND LOCKED, FULL STOP.' PLT COMPLETED 'GUMP' CHK ON DOWNWIND NOTING A SAFE CONDITION. AN ONBOARD VIDEO CAMERA OPERATING DURING THE FLT CONFIRMS THIS 'SAFE' CONDITION. AN INVESTIGATION TO DETERMINE WHAT MODE OF OP OR SPECIFIC SEQUENCE OF EVENTS COULD LEAD TO THIS ERRONEOUS SAFE CONDITION IS UNDERWAY AT THIS TIME. I AM STRONGLY RECOMMENDING A MECHANICAL SAFE INDICATION TO BACKUP OR REPLACE CURRENT ELECTRICAL SWITCHES NOW INSTALLED. FURTHERMORE, A SIMPLE MIRROR INSTALLED UNTIL A SYS PROVES ITSELF COULD HAVE SAVED THE DAY. GND CREW HAND-HELD RADIO DID NOT FUNCTION WHEN NEEDED. ACFT TOUCHED DOWN AT 65 MPH AND SLID ON CTRLINE 167 FT. MINOR DAMAGE TO ACFT COOLING DOG HOUSE RESULTED AND COMPLETE DESTRUCTION OF WOOD PROP. ACFT RETURNED TO SVC IN 48 HRS -- NO INJURIES.

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.