, a Piper Seneca with a pilot and one passenger, was descending into Yellowknife Airport after a VFR flight from Thompson and Dryden. The pilot had received landing clearance, but the a/c was observed descending toward Yellowknife Bay, several miles short of the airport. The pilot landed gear-up on an ice road outside the townsite. There were no injuries to the occupants, but the a/c reportedly sustained damage to the propellers and underside of the fuselage. It was also reported that the pilot attempted to change fuel tanks during the approach and the engines subsequently quit because of fuel starvation. During the ensuing forced approach, the pilot either chose not to lower the gear, or forgot to do so. OPI - System Safety UPDATE Maintenance and Manufacturing examined the a/c and reported that both propellers were damaged, which indicates that the engines were turning at the time of the incident. The throttles were at the 3/4 position and the propeller controls were at the 3/4 full fine position. Mixtures were at the idle cut-off position. The landing gear selector was in the up position and the emergency gear system was still in the normal position. There was no evidence of fuel leakage at the site. The pilot reported that he attempted to switch to his auxiliary tanks during the approach because the aux tanks contained more fuel, however, he did not turn on the auxiliary boost pumps during this process. The engines appear to have quit before the gravity-fed aux tanks could supply the engines with fuel. The a/c has been trucked to the Yellowknife Airport where M. & M. will take another look at the a/c to inspect for damage and fuel on board. The a/c will require two new propellers and the engines will require tear-down inspections because they experienced a sudden stoppage. Another report will follow after M. & M. has had a chance to examine the a/c at the hangar. UPDATE M. & M. reported that the a/c has had both propellers replaced with overhauled units, both engine crankshafts have had a dial run-out check and were found to be within limits. The fuselage, nacelles, engine mounts, and landing gear were inspected with no faults noted. The a/c was ground run and oil systems checked for contamination, with none found. Operational checks were satisfactory. Two belly antennae were removed and the mounting holes closed off and the a/c was released for a ferry flight. A ferry permit was issued for Edmonton via Fort McMurray and the a/c will be completed to return to service on the C. of A. Fuel drained prior to maintenance in Yellowknife was 36 gallons, 23 in the leftwing cells and 13 in the right wing cells.