HARTFORD, Conn. (AP) - The president United Technologies Corp.'s elevator subsidiary, Otis, has been named president of the parent company's commercial businesses.

Ari Bousbib will oversee Otis, Carrier heating and ventilating, UTC Fire and Security and UTC Power, which produces fuel cells. Bousbib, 47, also will oversee United Technologies international operations, which has offices in Beijing, Brussels, Moscow, Seoul and Singapore.

Didier Michaud, 50, president of Otis' British and central Europe operations, will take over as head of the elevator manufacturer.

United Technologies companies also include jet engine maker Pratt & Whitney and aerospace manufacturer Hamilton Sundstrand.

The leadership changes were announced four weeks after Louis

Chenevert was elected UTC's chief executive officer.