That was a McDonnell Douglas MD-83.
A tragedy caused by cost cutting bean counters.

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83 SD

84 CD

Not quite correct.

The "bean counters" never stated that specific maintenance tasks should not be performed in the interest of saving money.

The culture at the airline, however, tended to ignore the need for fully complying with the required maintenance tasks at each check. How this develops is gradual and sinister and is not simply explained by "bean counter".