"Rogues, listen up. Kasan has given us another Imperial military location. Its a large spaceport located at the end of this canyon. We're using Y-wings because of their greater firepower, but they move like a sleepy Hutt, so watch it."
The KoensayrBTL-A4 Y-wing starfighter was crewed by a single pilot.[6] The 16-meter-long attack starfighter had an ArMekSW-4 ion cannon turret which was preset to one of four arcs[4] and was typically locked forward, although some pilots chose to lock it facing aft for extra cover.[7] Easily modifiable,[5] the variant boasted much greater endurance (as much as three times greater) over its earlier predecessor, but was penalized with less powerful deflector shields and loss of accuracy in the ion cannons.[7][1] The loss of shield power provided a boost in engine power, but the combination proved insufficient and the Y-wing variant developed a poor reputation among its pilots,[6] and the starfighter was said to move like a "sleepy Hutt."[5] Although slow for ship-to-ship combat,[8] it was still capable of engaging other craft,[4] and the Y-wing was excellent when used for planetarybombing runs.[8]
Davish Krail's Y-wing is destroyed at the Battle of Yavin,
The BTL-A4 Y-wing attack starfighter traces its lineage back to the Clone Wars and the BTL-B Y-wing starfighter used by the Galactic Republic. After the war, the starfighter was put into service by Planetary Security Forces. As the resource-strapped Rebel Alliance started to grow its resistance against the Galactic Empire,[6] Y-wings started to be used more often, becoming the Rebel's primary starfighter.[2] The starfighters were brought into use by defecting Planetary Security Forces pilots, liberated from Imperial storehouses, or outright bought from pirates or unscrupulous governors.[6]
As the BTL-S3 became the primary Y-Wing variant of the Rebel forces, the A4 was still kept in many units as a supplementary craft. Despite the existence of the BTL-S3, the BTL-A4 variant of the Y-Wing was favored by Red and Gold Squadrons, and served with distinction in many major battles.[11] They were the starfighter intended to destroy the first Death Star during the Battle of Yavin. Flown by Gold Squadron, a trio of Y-wings were the first to launch a run into the trench to their target, an exhaust port leading to the main reactor, although the pilots were all shot down. Eventually, Luke Skywalker, in an X-wing, succeeded in hitting the target.[12] After the Battle of Yavin, the starfighters were assigned to less dangerous missions.[2]
More Y-wings were destroyed than any other Rebellion starfighter. The Y-wing was supplanted as the Rebellion, and later New Republic's, assault starfighter by the B-wing[4] and K-wing starfighters.
The Y-wing is based off concept art made by Ralph McQuarrie. The starfighters seen in the first Star Wars film, A New Hope, were models produced by Industrial Light & Magic and filmed against bluescreens.
There is a discrepancy between two sources concerning the internal size of the main laser cannons. Y-Wing blueprints created during production of Star Wars: Episode IV show the internal laser cannons ending before the pilot's feet, whereas in Star Wars: Incredible Cross-Sections they continue throughout the entire cockpit.