Company Expects FAA Approval Shortly
Nearing the end of FAA flight testing, the Sierra Super II
recently completed FAA FAR 36 and EASA ICAO Annex 16 noise testing
under FAA Type Inspection Authorization (TIA) #3.
Utilizing a sophisticated array of calibrated microphones and
testing equipment, FAA personnel examined aircraft noise levels in
a variety of situations. The noise-level testing performed May 19
completes all required testing for the noise certification, and the
data is being analyzed for submittal to the FAA.
To date, all "high-risk" flight tests have been completed --
including single engine takeoff, climb rate and landing scenarios.
With the FAR 36 Noise Test completion, FAA approval of the Super II
re-engining STC is expected shortly.
In previous testing, the aircraft easily achieved a cruise speed
of 404 KTAS. The Super II will be certified to a maximum speed of
Sierra says the Super II provides a substantial across-the-board
performance enhancement for the Citation II -- boosting fuel
efficiency as much as 27%, cutting time-to-climb to under 25
minutes to FL430, extending range to nearly 1800 NM, and increasing
maximum fuel payload.
The company also cites dramatic reductions in takeoff field
length, and increased climb rates, for the Super II. Dual Channel
FADEC controls provide smooth, vibration-free flight for passengers
and a reduced workload for the pilot.
Building on Sierra’s 25 years of Citation modification
history and 15 years of experience in Citation re-engining, the
Super II development program has been leveraged on the FAA and
EASA-approved Eagle II and Stallion modifications, which also
feature Williams International FJ44 turbofans.
The Super II modification extends Sierra’s history of
producing more than 40 FJ44 re-engined Citations since 2002.