American International Group Inc. is carrying on with plans for a possible initial public offering of its plane-leasing unit if an agreement to sell the business to Chinese investors collapses.

AIG’s International Lease Finance Corp. issued an updated filing today with financial results through June 30 and information on the Los Angeles-based company’s plane fleet. The insurer’s effort to sell the business has been delayed as the buyers fail to complete the deal.

As of yesterday, “the closing of the transaction has not occurred,” ILFC said in the filing. The IPO won’t happen if New York-based AIG completes the sale, the plane lessor said.

AIG has been working to jettison ILFC to reduce debt and simplify the insurer. The Chinese investors missed three deadlines to complete the purchase, most recently at the end of July, after agreeing in December to pay about $4.2 billion for 80 percent of ILFC. Jon Diat, an AIG spokesman, declined to comment.

ILFC owns and manages about 1,000 aircraft, and in June took delivery of its first Boeing Co. 787 Dreamliner jet, which is being leased to Norwegian Air Shuttle ASA. ILFC is the biggest customer for the Dreamliner, with about 74 on order.

Net income at ILFC fell to $82.6 million in the six months ended June 30 from $321.9 million in the same period a year earlier, according to today’s filing. Revenue from flight equipment rentals fell 6.7 percent to $2.07 billion.

With assistance from Lee Spears in New York and Julie Johnsson in Chicago. Editors: Dan Reichl, Peter Eichenbaum