03 Jan 2023 John A. Tirpak | "...An Air Force spokesperson said that a “small number” F-35As in USAF service are grounded until a technical compliance/technical directive is completed. While she did not provide details, a TC/TD usually means that a part or system must undergo inspection, and if a problem or faulty part is found, be replaced. A government source said the problem seems to be
engine-related, and so far, only jets with “a few dozen” flying hours or less are being inspected for the problem. “The scope and duration” of the effect on the USAF F-35A fleet “are to be determined based on additional ongoing analysis,” the Air Force spokesperson said. She did not say how many F-35As are affected, or whether they are in a single unit or dispersed across the combat air forces.”
https://www.airandspaceforces.com/30...eliveries-dip/