Faucett Perú Flight 251 refers to a Boeing 737-200 that was operating a domestic scheduled Lima–Arequipa–Tacna passenger service and crashed on 29 February 1996, while completing the first leg, on approach to Rodríguez Ballón International Airport. All 123 passengers and crew aboard the aircraft lost their lives in the accident. It is the deadliest aviation accident that occurred on Peruvian soil. Aircraft The aircraft involved in the accident was a Boeing 737-222, tail number OB-1451, c/n 19072, that had its maiden flight on 21 October 1968. Equipped with Pratt & Whitney JT8D-7B engines, the airplane started its commercial career on 28 October 1968, when it was delivered new to United Airlines and registered N9034U. Re-registered N73714 on 14 June 1971, Aloha Airlines took possession of the airplane until late , when it was transferred to Air California with the same registration. Air California was rebranded AirCal in , and the aircraft was re-registered again to N459AC. Following the absorption of AirCal into American Airlines, the airplane continued its career with this carrier until Braniff Airways received it, with the same registration, on 2 March 1989, later going to AL AC 2 Corp, on 15 May 1990. Finally, the aircraft was delivered to Faucett on 15 July 1991, and registered OB-1451. The airframe was old at the time of the accident. Description Inbound from Jorge Chávez International Airport, the aircraft was on a VOR/DME approach to Rodríguez Ballón International Airport's runway 09, at night, in rain and mist, with thunderstorms reported in the area. The crew had been issued an outdated barometric altimeter setting after bypassing an ILS signal, causing them to fly almost lower than the altitude they believed they were flying at. In fact, they had the wrong impression the aircraft was flying at , when it actually was at , some below the glideslope. The flightcrew asked for the lights of the runway to be brightened as they could not see them when they should on normal approach, receiving a response from air traffic controllers that they were at full intensity. The airplane crashed into hills at —the airport elevation is —, at 20:25, approximately short of the runway and off Arequipa. The aft section broke off on impact, and the main fuselage section continued to fly past the initial ridge and impacted near the top of the second one. The tail section fell into a crevasse between