1.   But the used convertible developed mechanical trouble.

2.   But there had been no hint of mechanical troubles, and controllers had reported no Mayday call from the cockpit.

3.   Ms. Hale assumed the bus was having some kind of mechanical trouble, but it turned out to be an urgent matter of a different kind.

4.   No one was injured, and Tree said the problem involved mechanical trouble.

5.   On Tuesday, ValuJet canceled a flight to Kansas City from Atlanta, citing mechanical trouble, and placed passengers on a Delta Air Lines flight.

6.   Since the trades occurred, the stock has fallen and Hondo has run into mechanical trouble at the well, delaying results until October.

7.   The center had borrowed the church van because their own vehicle was having mechanical trouble, Sligar said.

8.   The long-range bomber developed mechanical trouble and declared an emergency shortly after taking off from Diego Garcia, a British-held island with a large air base.

9.   The plane in which Lt. Cmdr. Johnson was an observer developed mechanical troubles and was forced to turn back alone, presenting a favorable target to the enemy fighters. . . .

10.   Those kinds of experiences have fueled suspicion that the weather and mechanical trouble are often excuses to cancel lightly filled flights, or to double up on later flights.