One sits underneath the cockpit in a compartment known as the forward electrical equipment bay, which was where Wednesday's malfunction occurred, and a second in the aft bay under the wings, which was the site of last week's fire in Boston.

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The fire broke out in the aft engine room and took several hours to extinguish.

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The man can still divorce his wife at will, but it will cost him dearly in the aft payment.

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And so there's a tendency in the cockpit--I can remember this myself in--on Columbia in 1996 when we had a potentially very dangerous hydrogen leak in the aft engine compartment.

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Officials had said they were examining the electrical system broadly, but while earlier incidents involved components in the aft electrical equipment bay, located behind the wings, Wednesday's involved a forward bay that until now had been largely free from scrutiny.

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Richard Walsh, a Massport spokesman, said the jet's auxiliary power unit battery, which is housed in a small compartment known as the aft electrical equipment bay, exploded after crews believed the fire was extinguished.

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Randy Weingarten of the AFT suggested a specific idea: community schools, especially in rural areas, where parents can get training after hours in the same place where their kids are learning during the day, and I think that's a terrific idea worth exploring.

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But Mousie, thou art no thy lane, In proving foresight may be vain: The best-laid schemes o mice an men Gang aft agley, An lea'e us nought but grief an pain, For promis'd joy!

BBC: Last Updated: Tuesday January 25 2005 15:24 GMT