The contract would have re-classified the strikers as laid-off rather than on the strike. The designation would make those that hadn't found other work eligible for unemployment benefits.

The bankrupt airline has been flying more-or-less normally for weeks with 880 replacement mechanics and outside vendors.

The latest offer would also have paid the strikers four weeks severance pay, accrued vacation time and guaranteed that they would be first in line for future job openings at the airline.

"It's the worst contract in aviation history," said striking mechanic Mike Bauer of South St. Paul. "I didn't go on strike for a contract like this."

Like many other strikers, Bauer has found another job. After 22 years with the airline, he has opened his own home repair business.

Hundreds of union members have already crossed the picket lines and rejoined the Eagan-based company. Northwest has said the permanent replacements included 280 strikers and 200 laid-off union members.

AMFA members were voting on the contract Northwest imposed when the strike began — not a negotiated settlement between the union and the airline. Delle-Femine called it "the worst contract in the history of airline labor" in a Dec. 14 letter to members.

In a prepared statement Friday, Northwest said it was disappointed, "A ratified agreement would have ended the mechanics' strike and allowed both parties to move forward."

This was the first time AMFA members have gotten to vote on a Northwest offer since 92 percent of them voted to authorize a strike in July.

Northwest's offers got progressively worse for the union beginning with its offer to retain 2,750 mechanics on the eve of the strike with 25 percent pay cuts. By October it was only offering to keep 500 of them.

The airline filed for bankruptcy on Sept. 14, citing huge increases in the price of jet fuel and the highest labor cost in the industry. The airline claimed it was losing $4 million a day.

The airline is negotiating with its other unions for another $1.4 billion in pay cuts.