A small plane crash-landed on a house shortly after it took off from Plaridel airstrip in Bulacan province of Manila on Saturday, killing seven, authorities said.The Civil Aviation Authority of the Philippines (CAAP) said all six people, including the two pilots aboard the six-seater twin-engined Piper PA-23 Apache plane, were killed.Police said the plane landed on a house and erupted in flames. A resident of the house was also killed, Xinhua reported.CAAP spokesman Eric Apolonio said the plane, operated by Lite Express, crashed in a residential area a few minutes after it took off at 11.21 a.m. It was reportedly bound for Laoag City in Ilocos Norter province.