Narrative:

About 20 miles out of our destination; the electric egt gage went blank. I pointed it out to our mechanic who was in the back seat. About 10 miles out the radio lights started flashing. I then realized I was having electrical failure. I pointed this out to the mechanic as well and then turned off all non-essential equipment. I then lowered the gear; and announced that I was over the airport. The gear came down as usual; and I had a gear down indication with the nose wheel indicator only. The other indication for the gear is the green light; which was out because of the electrical problem. The mechanic looked at the gear in the shadow; and also noticed that it was down. When abeam the numbers on downwind; the radio stopped working. I reviewed the emergency checklist to make sure I covered everything. I continued on an extended downwind as I ran the checklist. In the checklist; is says with gear down indication; continue. I had gear down indication; therefore I turned base and final and landed. While rolling out after touchdown; the left main gear collapsed. Seconds later; the right collapsed; then almost immediately the nose gear collapsed; and we came so a stop. My two passengers and I were unharmed. A crane picked the plane up; we put the gear down; and towed it off the runway. Looking back at the occurrences; I believe that the alternator failed which drained the battery. When I lowered the gear; it seemed to lower normally; but failed to lock. The checklist did not mention using the manual gear extension to insure the gear was locked. I wish I could go back in time and do it anyway. Unfortunately that isn't an option.

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Original NASA ASRS Text

Title: Following an airborne electrical failure the landing gear of a BE35 collapsed on landing. The pilot had not performed the manual gear extension procedure because he believed the gear had extended normally despite the lack of positive gear safe indications.

Narrative: About 20 miles out of our destination; the electric EGT gage went blank. I pointed it out to our mechanic who was in the back seat. About 10 miles out the radio lights started flashing. I then realized I was having electrical failure. I pointed this out to the mechanic as well and then turned off all non-essential equipment. I then lowered the gear; and announced that I was over the airport. The gear came down as usual; and I had a gear down indication with the nose wheel indicator only. The other indication for the gear is the green light; which was out because of the electrical problem. The mechanic looked at the gear in the shadow; and also noticed that it was down. When abeam the numbers on downwind; the radio stopped working. I reviewed the emergency checklist to make sure I covered everything. I continued on an extended downwind as I ran the checklist. In the checklist; is says With Gear Down Indication; Continue. I had gear down indication; therefore I turned base and final and landed. While rolling out after touchdown; the left main gear collapsed. Seconds later; the right collapsed; then almost immediately the nose gear collapsed; and we came so a stop. My two passengers and I were unharmed. A crane picked the plane up; we put the gear down; and towed it off the runway. Looking back at the occurrences; I believe that the alternator failed which drained the battery. When I lowered the gear; it seemed to lower normally; but failed to lock. The checklist did not mention using the manual gear extension to insure the gear was locked. I wish I could go back in time and do it anyway. Unfortunately that isn't an option.

Data retrieved from NASA's ASRS site as of April 2012 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.