Narrative:

Pilot landed C172 on runway 32R and suffered a complete electrical failure upon landing. Prior radio xmissions appeared normal between pilot and approach, and pilot and tower, prior to landing. As aircraft is equipped with a modern digital panel, all indicators and push buttons become ineffective upon loss of power. All circuit breakers were checked and found to be in their normal operating position. I taxied to next available off ramp, and cleared active runway as soon as possible. Stopped to inspect for interfering traffic. Upon seeing none, and seeing no red or green or white light from the tower, I proceeded slowly via taxiway C to parking space. No lights from tower were observed, although seeing tower is difficult from taxiway C northbound, as pilot is tall and high wings of the C172 block a clear view. Transmitted blindly several times to tower on what I thought may have been a severely degraded radio (system voltage in cockpit reading less than 7.5 volts). No response was heard. No backup handheld radio on board. No contact with 'ground' was possible, nor was 7700 squawk possible. The only possible action to avoid this in the future appears to be to require a backup battery be present in radios and/or xponders.

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Original NASA ASRS Text

Title: C172 PLT TAXIES WITHOUT RADIO OR LIGHT SIGNAL CLRNC AFTER SUFFERING A COMPLETE ELECTRICAL FAILURE ON LNDG.

Narrative: PLT LANDED C172 ON RWY 32R AND SUFFERED A COMPLETE ELECTRICAL FAILURE UPON LNDG. PRIOR RADIO XMISSIONS APPEARED NORMAL BTWN PLT AND APCH, AND PLT AND TWR, PRIOR TO LNDG. AS ACFT IS EQUIPPED WITH A MODERN DIGITAL PANEL, ALL INDICATORS AND PUSH BUTTONS BECOME INEFFECTIVE UPON LOSS OF PWR. ALL CIRCUIT BREAKERS WERE CHKED AND FOUND TO BE IN THEIR NORMAL OPERATING POS. I TAXIED TO NEXT AVAILABLE OFF RAMP, AND CLRED ACTIVE RWY ASAP. STOPPED TO INSPECT FOR INTERFERING TFC. UPON SEEING NONE, AND SEEING NO RED OR GREEN OR WHITE LIGHT FROM THE TWR, I PROCEEDED SLOWLY VIA TXWY C TO PARKING SPACE. NO LIGHTS FROM TWR WERE OBSERVED, ALTHOUGH SEEING TWR IS DIFFICULT FROM TXWY C NBOUND, AS PLT IS TALL AND HIGH WINGS OF THE C172 BLOCK A CLR VIEW. XMITTED BLINDLY SEVERAL TIMES TO TWR ON WHAT I THOUGHT MAY HAVE BEEN A SEVERELY DEGRADED RADIO (SYS VOLTAGE IN COCKPIT READING LESS THAN 7.5 VOLTS). NO RESPONSE WAS HEARD. NO BACKUP HANDHELD RADIO ON BOARD. NO CONTACT WITH 'GND' WAS POSSIBLE, NOR WAS 7700 SQUAWK POSSIBLE. THE ONLY POSSIBLE ACTION TO AVOID THIS IN THE FUTURE APPEARS TO BE TO REQUIRE A BACKUP BATTERY BE PRESENT IN RADIOS AND/OR XPONDERS.

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.