The solicitation is issued under EAF Emergency Acquisition Flexibilities for a Critical Application Item. The item must be procured only from suppliers providing FAA-certified parts with an FAA Authorized Release Certificate, FAA Form 8130-3 Airworthy Approval Tag. Offers from sources that are not government-approved will be deemed technically unacceptable and ineligible for award. Distributors of approved sources must submit an authorized distributor letter on the source’s letterhead to the buyer point of contact via email.