Eleven USAF accident investigation board reports present findings into Class A aerospace mishaps involving UAV/UAS remotely piloted aircraft (RPA) in 2011 and 2012. The incidents included the EQ-4B Global Hawk and MQ-1B Predator. Report One: On 20 August 2011, at approximately 1711 Zulu (Z) time, the mishap remotely piloted aircraft (MRPA), EQ-4B Global Hawk, tail number (T/N) 04-2017, crashed in Afghanistan, 9.4 hours after takeoff, while conducting a tasked communications relay mission. Report Two: On 3 January 2011, at approximately 0605 zulu (Z) time, the mishap remotely piloted aircraft (MRPA), a M Q-1B Predator, tail number 99-3061, operated by the 15th Reconnaissance Squadron (RS) from Creech AFB, crashed west of Kandahar Air Base after completing 18 hours of a tasked surveillance mission. The crash site was remote desert terrain. Report Three: On 14 January 2011, at 1617 Zulu (Z) time, the mishap remotely piloted aircraft (MRPA), a MQ-1B Predator, tail number (T/N) 08-3228, crashed in the Gulf of Aden while returning to an undisclosed base approximately nine and a half hours after takeoff. Report Four: On 1 May 2011, at approximately 1650 zulu (Z) time, the mishap remotely piloted aircraft (MRPA), a MQ-1B Predator, tail number 01-3074, operated by the 18th Reconnaissance Squadron (RS) from Creech AFB, crashed 2 kilometers (KM) (direction unknown) outside a Forward Operating Base (FOB) after completing 18 hours of a tasked surveillance mission. Report Five: On 7 May 2011, at 0355 Zulu (Z) time, the mishap remotely piloted aircraft (MRPA), an MQ-1B Predator, tail number (T/N) 06-3173, crashed in the Gulf of Aden while returning to an undisclosed base approximately one and a half hours after takeoff. Report Six: On 17 May 2011, at approximately 0217L, an MQ-1B, Tail Number (T/N) 07-3249, deployed from the 49 Wing (WG) at Holloman Air Force Base (AFB), NM impacted the terrain during approach and landing in Djibouti. Report Seven: On 5 June 2011, the mishap remot