The deal is expected to be announced as soon as early next week, a source familiar with the matter said on condition of anonymity.

AIG, which has been selling assets to pay back a $182 billion U.S. government bailout from 2008, had long been hoping to float its ILFC aircraft leasing unit through an initial public offering, but poor market conditions forced it to delay those plans.

An IPO was expected to value the company at $6 billion to $8 billion, according to previous reports on the plans.

AIG Chief Executive Robert Benmosche said last month that he was waiting for markets to improve to take ILFC public.

AIG said it is in talks to sell a 90 percent stake in the unit to a consortium including trust company New China Trust Co Ltd, China Aviation Industrial Fund, and an investment arm of ICBC (1398.HK) (601398.SS), China's largest bank. New China Trust is 20 percent-owned by British bank Barclays Plc (BARC.L).

"The talks are reasonably far along," a second source said.

An ILFC spokesman declined comment.

A spokesman for ICBC declined to comment. Reuters was unable to reach New China Trust and China Aviation.

Shares in AIG rose 2.6 percent to $34.13 on the New York Stock Exchange, after touching their highest level in more than five weeks earlier in the day.

"We view this news positively, since we think a sale of ILFC is the last large transaction AIG needs to do as it continues its turnaround," S&P Capital IQ analyst Cathy Seifert said in a research note.

The capital may come at a good time for AIG. Late Friday, it said it expects after-tax losses of at least $1.3 billion from Superstorm Sandy. It said it would contribute $1 billion to its U.S. property insurance units to help cover the losses.

INDUSTRY LEADER

According to AIG's third-quarter earnings report, ILFC's net book value as of September 30 was $7.9 billion. In the past, Benmosche had been adamant about not selling ILFC for less than book value, although the fact that the IPO process has languished for 15 months may have changed his thinking.

ILFC reported total assets of $39.6 billion and $39 million in operating income in the third quarter, compared with an operating loss of $1.3 billion a year earlier, when it took $1.5 billion of impairment charges and fair value adjustments.

Founded by aircraft leasing legend Steven Udvar-Hazy, who sold the company to AIG and eventually formed his own group, ILFC is one of the world's largest leasing companies and among the world's biggest owners of passenger jets. Its main rival is GECAS, an arm of General Electric Co (GE.N).

ILFC's customers include most of the world's major airlines.

Since it was founded almost 40 years ago, ILFC has bought a combined total of more than 1,500 passenger jets from Boeing Co (BA.N) and Airbus (EAD.PA), according to manufacturer figures.

ILFC has a portfolio of more than 1,000 owned or managed aircraft. It has on order 239 new fuel-efficient planes, including Boeing 787s and Airbus A320neos, and has the rights to purchase an additional 50 such aircraft.

The leasing company has been looking for areas of growth and beefed up its presence in the Asia Pacific region by opening offices in Singapore and Beijing this year.

CHINESE BUYING SPREE

China has shown interest in buying aircraft leasing businesses before.

China Development Bank, the country's policy lender, was among the short-listed bidders for Royal Bank of Scotland Group Plc's (RBS.L) aviation business earlier this year, according to a previous Reuters report.

That business was bought by a consortium led by Japan's Sumitomo Mitsui Financial Group (8316.T).

Analysts say China tends to balance its orders between Airbus and Boeing, the world's two dominant aircraft manufacturers, partly for political reasons.

As a result, the manufacturers may not need to compete as heavily for orders as in the rest of the world, so China is paying a premium for aircraft, industry experts say. The order books of ILFC could mean cheaper planes for China.

Chinese companies have launched about $51.3 billion worth of overseas acquisitions this year, making the country Asia's second-biggest spender on outbound transactions, according to Thomson Reuters data, behind Japan.

Credit Suisse is among the banks advising the buyers, while Goldman Sachs is among AIG's advisers.

(Additional reporting by Denny Thomas, Michael Flaherty, Vikram Subhedar, Kelvin Soh, and Elzio Barreto in Hong Kong, Tim Hepher in Paris and Ben Berkowitz in New York; Editing by Mark Potter, Lisa Von Ahn, John Wallace, Tim Dobbyn and Leslie Adler)

• A Permanent Economic Emergency