Question: When did the season where Derek died in Grey's Anatomy air?

full_context: Document 1: Derek Shepherd: Derek Christopher Shepherd, M.D., also referred to as ``McDreamy '', is a fictional surgeon from the ABC medical drama Grey's Anatomy, portrayed by actor Patrick Dempsey. He made his first appearance during`` A Hard Day's Night'', which was broadcast on March 27, 2005. Derek was married to Addison Montgomery (Kate Walsh) for 12 years, before their divorce in 2006. Before his death in 2015, Derek was happily married to his longtime girlfriend Meredith Grey (Ellen Pompeo). The couple are often referred to as ``Mer & Der ''and they have three children together. Shepherd was formerly the Chief of Surgery at Seattle Grace Mercy West Hospital, but abruptly resigned as chief in season 7 following the shooting. For his portrayal of Shepherd, Dempsey was nominated in 2006 and 2007 Golden Globe for the Best Performance by an Actor in a Television Series Drama for the role, and the 2006 SAG Award for the Outstanding Performance by an Actor in a Drama Series award.
Document 2: Lexie Grey: The character's focal storyline involved a romantic relationship with plastic surgeon Mark Sloan (Eric Dane). She sustained life - threatening injuries after an aviation accident, in the eighth - season finale, which ultimately ended in her death. The character's death resulted in mixed critical feedback and the reason given for the departure was Leigh's desire to spend more time with her family. Rhimes has characterized Lexie as being a dork, as well as having issues with saying how she feels. Leigh has been moderately well received by critics, and was among the cast to receive a Screen Actors Guild Award nomination for Outstanding Performance by an Ensemble in a Drama Series in 2007.
Document 3: Grey's Anatomy (season 5): The fifth season of the American television medical drama Grey's Anatomy, created by Shonda Rhimes, commenced airing on American Broadcasting Company (ABC) in the United States on September 25, 2008 and concluded on May 14, 2009 with twenty - four aired episodes. The season follows the story of a group of surgeons as they go through their residency, while they also deal with the personal challenges and relationships with their mentors. Season five had thirteen series regulars with twelve of them returning from the previous season. The season aired in the Thursday night timeslot at 9: 00 pm. The season was officially released on DVD as seven - disc boxset under the title of Grey's Anatomy: The Complete Fifth Season -- More Moments on September 9, 2009 by Buena Vista Home Entertainment.
Document 4: Grey's Anatomy (season 10): Grey's Anatomy (season 10) DVD cover art for the tenth season of Grey's Anatomy Starring Ellen Pompeo Sandra Oh Justin Chambers Chandra Wilson James Pickens, Jr. Sara Ramirez Kevin McKidd Jessica Capshaw Sarah Drew Jesse Williams Camilla Luddington Gaius Charles Jerrika Hinton Tessa Ferrer Patrick Dempsey Country of origin United States No. of episodes 24 Release Original network ABC Original release September 26, 2013 (2013 - 09 - 26) -- May 15, 2014 (2014 - 05 - 15) Season chronology ← Previous Season 9 Next → Season 11 List of Grey's Anatomy episodes
Document 5: Grey's Anatomy (season 11): The eleventh season of the American television medical drama Grey's Anatomy premiered on September 25, 2014 in the United States on the American Broadcasting Company (ABC) and consists of 25 episodes. The season was produced by ABC Studios, in association with ShondaLand Production Company and The Mark Gordon Company; the showrunner being Shonda Rhimes. The season commenced airing with the episode ``I Must Have Lost it on the Wind ''and concluded with the season finale`` You're My Home'' airing on May 14, 2015. The season was officially released on DVD as a six - disc boxset under the title of Grey's Anatomy: The Complete Eleventh Season -- Life Changes on August 18, 2015 by Buena Vista Home Entertainment.
Document 6: Grey's Anatomy (season 11): The eleventh season of the American television medical drama Grey's Anatomy premiered on September 25, 2014 in the United States on the American Broadcasting Company (ABC) and consists of 25 episodes. The season was produced by ABC Studios, in association with Shondaland Production Company and The Mark Gordon Company; the showrunners being Stacy McKee and William Harper. The season commenced airing with the episode ``I Must Have Lost it on the Wind ''and concluded with the season finale`` You're My Home'' airing on May 14, 2015. The season was officially released on DVD as a six - disc boxset under the title of Grey's Anatomy: The Complete Eleventh Season -- Life Changes on August 18, 2015 by Buena Vista Home Entertainment.
Document 7: Meredith Grey: Meredith is widowed when Derek is killed in a car accident and was taken to an understaffed hospital. The doctors failed to recognize his head injury in time and allowed personal conflicts to interfere. Derek is declared brain dead, and Meredith must go to the medical center to consent to remove him from life support, shortly before she's hit with the first waves of morning sickness. She tells Penny, the intern who was assigned to Derek that every doctor has ``that one ''patient who dies on their watch and haunts them forever and`` that one will make you work harder, and they make you better.''
Document 8: I Saw What I Saw: Reed ultimately realizes that the mistake was committed by April, who forgot to check the patient's airways, already swelled by the smoke, after being distracted by a patient with an axe stuck in his chest. Richard then fires her. The residents are shown having various reactions, as some complain about the absurdity of April's mistake, while Cristina shows empathy for her former enemy. Derek then criticizes Richard, telling him he was initially responsible for the situation by setting chaos in the ER with the merger.
Document 9: Grey's Anatomy (season 14): Grey's Anatomy (season 14) Promotional poster Starring Ellen Pompeo Justin Chambers Chandra Wilson James Pickens, Jr. Kevin McKidd Jessica Capshaw Sarah Drew Jesse Williams Caterina Scorsone Camilla Luddington Kelly McCreary Jason George Martin Henderson Giacomo Gianniotti Country of origin United States No. of episodes 24 Release Original network ABC Original release September 28, 2017 (2017 - 09 - 28) -- May 17, 2018 (2018 - 05 - 17) Season chronology ← Previous Season 13 Next → Season 15 List of Grey's Anatomy episodes
Document 10: Grey's Anatomy (season 9): The ninth season of the American television medical drama Grey's Anatomy began airing in the United States on the American Broadcasting Company (ABC) on September 27, 2012, with the season premiere Going, Going, Gone and consists of 24 episodes with the finale Perfect Storm airing on May 16, 2013. The season was produced by ABC Studios, in association with Shondaland Production Company and The Mark Gordon Company; the showrunner being Shonda Rhimes. The season was officially released on DVD as a six - disc boxset under the title of Grey's Anatomy: The Complete Ninth Season - Everything Changes on August 27, 2013 by Buena Vista Home Entertainment.
Document 11: Grey's Anatomy (season 9): The season follows the characters dealing with the aftermath of the season eight plane crash that claimed the life of Lexie Grey (Chyler Leigh) and upon rescue Mark Sloan (Eric Dane), who dies after sustaining injuries from the crash. Derek Shepherd (Patrick Dempsey) finds his surgical career in doubt after badly damaging his hand but Callie Torres (Sara Ramirez) ultimately manages to save his hand. The show's protagonist Meredith Grey (Ellen Pompeo) deals with the loss of her half - sister Lexie and later discovers that she is pregnant. Cristina Yang (Sandra Oh) who is severely traumatized upon rescue and later decides to take up her fellowship in Minnesota. Arizona Robbins (Jessica Capshaw) another survivor of the plane crash upon return realizes that her leg has to be amputated to save her life, reacts badly to this, becoming bitter and blaming her wife Callie and her former friend Alex Karev (Justin Chambers). To prevent the doctors' court case from being thrown out, Owen Hunt (Kevin McKidd) decides to divorce Yang, but the two agree to start again. The hospital itself becomes liable for the crash, putting its future in extreme doubt prompting the four crash survivors and Torres to purchase the hospital. Miranda Bailey (Chandra Wilson) marries her partner Ben Warren (Jason George), April Kepner (Sarah Drew) returns home to Ohio, but is brought back by Hunt to rejoin the hospital and she restarts her relationship with Jackson Avery (Jesse Williams).
Document 12: Grey's Anatomy (season 11): Not even a week after the Season 10 finale episode aired, the Grey's Anatomy team of writers began collaborating on ideas for Season 11 storylines. Shonda Rhimes tweeted that they were hard at work in the writing room, but would have the month of June off before coming back in full swing to write actual episodes. After the 4th of July weekend, Rhimes tweeted that the writers' room was once again buzzing, as the team had returned from vacation to start writing new episodes for Season 11. Camilla Luddington confirmed that the filming for the eleventh season would begin on July 25, 2014.
Document 13: Derek Shepherd: In season 11, Derek is involved in a fatal car accident while driving to the airport for his final trip to Washington. He is able to hear and process auditory input, but unable to speak. He is recognized by Winnie, one of the victims of a crash he assisted in earlier, who tells the surgeons that their patient's name is Derek and that he is a surgeon as well. The hospital he was taken to was understaffed and his head injury was not detected quickly enough by the interns on duty that night. Although the neurosurgeon on call is paged multiple times, he takes too long to arrive and Derek is declared brain dead. Police arrive at Meredith's door and take her to see Derek, where she consents to removing him from life support. At the time of his death, Meredith was pregnant with their third child. She gives birth to a daughter whom she names Ellis after her mother.
Document 14: Grey's Anatomy (season 8): The eighth season of the American television medical drama Grey's Anatomy, commenced airing on the American Broadcasting Company (ABC) on September 22, 2011, with a special two - hour episode and ended on May 17, 2012 with the eighth season having a total of 24 episodes. The season was produced by ABC Studios, in association with Shondaland Production Company and The Mark Gordon Company, and overseen by showrunner Shonda Rhimes.
Document 15: Derek Shepherd: Derek Shepherd Grey's Anatomy character Patrick Dempsey as Derek Shepherd in 2012 First appearance ``A Hard Day's Night ''(1.01) March 27, 2005 Last appearance`` You're My Home (Grey's Anatomy)'' (11.25) May 14, 2015 Created by Shonda Rhimes Portrayed by Patrick Dempsey Information Full name Derek Christopher Shepherd Nickname (s) McDreamy Occupation Attending neurosurgeon Member of the Board (former) Chief of Surgery (former) Head of Neurosurgery (former) Title M.D. F.A.C.S. Family Mr. Shepherd (father, deceased) Carolyn Maloney Shepherd (mother) Nancy Shepherd (sister) Kathleen ``Kate ''Shepherd (sister) Elizabeth`` Lizzie'' Shepherd (sister) Amelia Shepherd (sister) 9 unnamed nieces 6 unnamed nephews (one deceased) Spouse (s) Addison Montgomery (m. 1994; div. 2006) Meredith Grey (m. 2009 -- 2015) Significant other (s) Rose Children Zola Shepherd (daughter) Derek Bailey Shepherd (son) Ellis Shepherd (daughter) (with Meredith) certifications M.D. F.A.C.S
ground_truth: September 25, 2014
sub_queries: what season did derek die in grey's Answer: season 11
when did season 11 of grey's anatomy air Answer: September 25, 2014