In 1999, the USAF identified a need for a helicopter with improved range, speed, and cabin space. An options analysis was completed in 2002 and funding for 141 aircraft under the "personnel recovery vehicle" program began in 2004. In 2005, it was renamed CSAR-X, meaning combat search and rescue. Sikorsky entered the HH-92 Superhawk, Lockheed Martin entered the VH-71 Kestrel, and Boeing entered the HH-47 Chinook. The HH-47 won the competition in November 2006, but the award was cancelled after successful protests from both rival competitors. A Request for Proposals (RFP) was reissued in 2007, but protested again before proposals were received, leading to a second cancellation.[8] In March 2010, the USAF announced a recapitalization plan to return its 99-aircraft inventory to 112 airframes, incrementally replacing aging HH-60Gs; a secondary plan to replace 13 attrition HH-60s, seven of which were lost in combat since 2001, was also been initiated. The USAF deferred secondary combat search and rescue requirements calling for a larger helicopter. A UH-60M-based version was offered as a replacement. Onboard systems INS/GPS/Doppler navigation SATCOM satellite communicationsSecure/anti-jam communications LARS (Lightweight Airborne Recovery System) range/steering radio to compatible survivor radios Automatic flight control NVG night vision goggle lighting FLIR forward looking infra-red radarColor weather radar Engine/rotor blade anti-ice system Retractable In-flight refueling probe Integral rescue hoist RWR combat enhancement IR infra-red jamming unit flare/chaff countermeasure dispensing system
