MGM Mirage seeks to extend $5.5 bln credit line

* Maturity would be extended to February 2014

* Lenders would get fees, partial repayment, higher rate

* MGM could issue $800 million in secured notes

LOS ANGELES, Feb 3 (Reuters) - MGM Mirage (MGM.N) is seeking to amend its $5.55 billion credit facility, extending its maturity date to February 2014 from October 2011, according to Reuters Loan Pricing Corporation.

RLPC, citing unnamed sources, said the amendment and extension request was sent out on Wednesday, with responses due by Feb. 16.

Officials at Las Vegas-based MGM did not respond to requests for comment.

According to the report, MGM has already gathered about 72 percent of lender votes ahead of the amendment request. Lenders who consent to the amendment would get a 5 basis point fee and those who extend will get a 70 basis point fee.

Extending lenders would receive a par paydown equal to 20 percent of their commitments. And if more than 80 percent of lender votes are obtained, the paydown will be increased by 1 percent for each full percentage point of participation, up to a maximum reduction of 25 percent.

Pricing on the extended portion will be increased by 100 basis points to LIBOR plus 500, according to RLPC.

The amendment also proposes that the company be allowed to issue about $800 million of secured notes.

RLPC said the deal consists of a $3.43 billion revolving credit facility and a $2.12 billion term loan. Under the amendment, the revolver will be "re-tranched" -- both non-extended and extended portions will be split into a new revolver and a new term loan.

(Reporting by Deena Beasley; Editing by Bernard Orr)