US aircraft modification specialist Sierra Industries has clinched US supplemental type certification for its Stallion, a re-engined Cessna Citation 500/501SP, powered by two 2,300lb-thrust (10kN) Williams International FJ44-2As.
The six-seat Stallion, which made it first flight on 14 June, comes from the same stable as the longer-range FJ44-powered Eagle II launched in 2002 as an upgrade to the 20-year-old Pratt & Whitney Canada JT15D-1/B-powered Eagle, based on the earlier Citation 500.
Uvalde, Texas-based Sierra says the re-engining increases the maximum ceiling by 8,000ft (2,450m) to 43,000ft, economy cruise by 30kt (55km/h) and maximum cruise by 40kt. Sierra, which repurchased the FJ44 re-engining programme from Landmark Aviation in November last year, says the Stallion conversion takes around 10 weeks and costs around $1.6 million.
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| The Stallion is a re-engined Cessna 500-series Citation |
Source: Flight International
