(a) Reportable event. A reportable event occurs for a plan when, with respect to a loan with an outstanding balance of $10 million or more to a member of the plan's controlled group—
(1) There is an acceleration of payment or a default under the loan agreement, or
(2) The lender waives or agrees to an amendment of any covenant in the loan agreement the effect of which is to cure or avoid a breach that would trigger a default.