Incident Details
The pilot reported that the aircraft was laboring after takeoff from Atlantic City. He decided to circle the field (Badger) before continuing to Northampton, MA. Upon reaching 3,000 feet, he stated the aircraft again started losing airspeed, although the power indicated "24 square." A precautionary landing was made at Toms River, and the aircraft was re-preflighted. Finding nothing obvious, he deplaned his passengers and took off by himself to check aircraft performance.
Gear-Up Landing
While turning base leg, the problem reoccurred. The pilot stated he lowered the flap and gear switches. The aircraft came to a stop with the gear up. The gear handle was found in the neutral position.
Investigation Findings
During gear tests, it was noted that the warning horn did not operate with the throttle closed. No engine malfunction was found, although the aircraft was out of annual.