Who Benefits from Airworthiness Directives?

The FAA is supposed to issue Airworthiness Directives only when an unsafe condition has been identified, a solution is available, and the cost to owners can be justified in terms of increased public safety. But lately, we've noticed a disturbing trend toward ADs where the FAA's justification seems questionable and the primary beneficiary appears to be the manufacturers, not the public. Case in point: two recent proposed ADs against the crankshafts in 60,000 TCM and Lycoming engines.

Enter the e-mail address of the recipient. Multiple addresses need to be separated by commas.

Note: Your e-mail address, and that of your recipient, will be used only in the case of transmission errors and to let the recipient know who sent the story. The information will not be used for any other purpose.