The M28 aircraft is a commuter-category class, multi-purpose short take-off and landing aircraft. Its mission roles include passenger and/or cargo transportation and emergency medical services transport. Powered by Pratt & Whitney's popular PT-6 and configured with a rear cargo ramp, it carries up to 19 passengers and can take off and land on nearly any type of airstrip. The M28 aircraft holds type certificates with the FAA and EASA (European Aviation Safety Agency).
Attributes
Sea level, standard day, maximum takeoff gross weight unless otherwise
Performance
Max Gross Weight: 16,534 lb 7,500 kg
Empty Weight: 9,601 lb 4,354 kg
Payload: 5,070 lb 2,300 kg
Max Fuel Load : 3,894 lb/602 US Gal 1,766 kg/2,278 l
Takeoff Power: 2 x 1100 shp 2 x 820 kw
Average Fuel Flow (10,000 ft): 591 lb/hr 268 kg/hr
Max Operating Speed: 192 kts 355 km/h
Stall Speed (MTOW): 64 kts 118 km/h
Long Range Cruise Speed: 132 kts 244 km/h
Max Rate of Climb (MTOW): 2,420 ft/min 12.29 m/s
Takeoff Distance: 1,800 ft 548 m
Landing Distance: 1,640 ft 499 m
Service Ceiling: 25,000 ft 7,620 m
Max Range (10,000 ft., 45 min. reserve): 860 nm 1,592 km
Endurance (10,000 ft., 45 min. reserve): 6.2 hrs
Engines: 2 PT6A-65B
Accommodations
Length: 13.10m 43.00ft
Width: 1.73m 5.66ft
Height: 1.70m 5.58ft
Volume: 13.7 m^3 485 ft^3
External Luggage Pod Volume: 1.3 m^3 46 ft^3
Rear Cargo Door Length: 2,6m x 1,2m 8.53ft x 3.93ft
Rear Cargo Door Width: 0.9 – 1.2 m 2 ft in – 3 ft 11 in
Passenger Capacity : 19 Passengers + 2 Crew
Safety
Performance
- Class leading STOL performance
- Exceptional low-speed handling
- Max range 1000+nm
- Max cruise 192 kts
- MGW 16,534 lbs
- Fuel = 602 gallons
Reliability/Durability
- P&WC engines
- Durable fixed gear for unprepared airfield operations
- High wing/inverted engine configuration offers unparalleled engine protection
Versatility
- Easily reconfigurable cabin
- Rear clamshell doors, roller floor, and cargo loading hoist allow for quick loading/unloading of cargo
- Nearly any combination of up to 19 pax and up to 5,070 lb of cargo can be carried
Safety
- Airframe ice protection system (cert 2012)
- SSFDR flight data recorder
- FA2100 voice recorder
- EGPWS Mk VI system
- TCAS II CAS67A with altitude preselect
- RDR2000 weather Radar
Baseline Configuration
Propulsion
- Two Pratt & Whitney Canada PT6A-65B turboprop engines rated at 1,100 SHP each
- Two Hartzell Propeller Inc. HC-B5MP-3D 5-bladed constant-speed propellers with feathering and reverse
- Displayed on engine instruments ITT – Interturbine Temperature, Tq – Engine Torque, Np – Propeller Speed, Ng – Gas Generator Speed, Oil Temperature Indicator, Oil Pressure Indicator, Fuel Flow Indicator
- Engine Fire Protection System with cockpit annunciators, three sets of flame detectors, and two-shot extinguishers in each engine nacelle
- Inertial Separators, bleed air deiced engine inlets, and electrically deiced propellers Control Surfaces
- Wing is a semi-monocoque, two-spar, all-metal split structure consists of the center section and two outboard wing sections
- Each outer wing is fitted with a flap, an aileron, a two-section slat, and two spoilers
- Empennage is a cantilever, all-metal, semi-monocoque with twin vertical fins and rudders
- Horizontal stabilizer leading edge is fitted with a fixed slat which serves to eliminate air flow separation
- Both elevator halves fitted with trim tabs
- Both rudders fitted with trim tabs
Flight Instruments
- Pilot and co-pilot EFIS systems, each includes EADI, EHSI and mode control panel
- Airspeed – refer to Avionics Package
- Altimeter – refer to Avionics Package
- VSI – refer to Avionics Package
- Pitot-Static system, dual
- Digital electric clock, AstroTech LC-2 Quartz Chronometer
- Standby magnetic compass
- Master Warning/Annunciator Panel, mounted in low profile Glareshield, Pilot and co-pilot Cockpit, Flight & Ground Controls
- Primary flight – longitudinal, lateral, and directional controls provided at Pilot and Copilot stations. Conventional yoke type controls and rudder pedal type controls.
- Center console throttle quadrant
- Electric elevator, aileron and rudder trim controls
- Dual hydraulic systems, powered by engine-driven pumps, with hydroaccumulator to supply hydraulic pressure in case of pump failure
- Hydraulic driven flaps, spoilers, main wheel brakes and nose wheel steering Electrical System
- Battery – Dual 26 Ah Nickel-Cadmium batteries provide up to 30 minutes of backup power as well as engine start capability
- DC Generators – two 28 VDC engine-driven generators
- AC Power – two 115 VAC converters
- Ground Power Receptacle – 28 VDC
Lighting
- Cockpit lighting includes Instrument panel, pilot and copilot Control Panels, and Cockpit ceiling lights
- Cabin lighting includes Exit lights, Fasten seat belt lights, ceiling lights, and Entry stairs ceiling light
- External lights include Nose-mounted taxi lights, Main gear support-mounted landing lights, Navigation lights, and Strobe lights
Cabin Comfort System
- Cockpit and cabin bleed air heating w/windshield defogging system
- Heating and ventilation control panel
- Ram air ventilation system
- Electric ventilation blower
- Paint & Corrosion Protection
- Refer to Paints and Finishes section
- Black instrument panel paint finish
- Cockpit/Cabin Appointments
- Pilot/co-pilot seats - vertically adjusting, 4 point restraint/harness, fabric upholstery
- Pilot/co-pilot light filters mounted above cockpit dome windows
- Cockpit
Manual fire extinguisher
- Crash axe for emergency egress
- Emergency locator transmitter
- Right side emergency exit
- Left and right side cabin emergency exits
Avionics
- Belt Driven Alternator - 175 amp/28 volt
- Garmin GTN 650 (16W) WAAS-certified GPS, ILS/VOR with localizer and glideslope
- Honeywell Bendix/King KR 22 marker beacon receiver control and annunciator panel
- Honeywell Bendix/King KFC 325 Auto Flight Control Systems
- Dual Honeywell Bendix/King EFS 50 Electronic Flight Instrument System
- Dual Litef LCR 100 – Attitude Heading Reference System
- Honeywell Bendix/King MST67A Mode S Transponder, fully compatible with mode A and C transponder formats, compatible with TCAS II
- Honeywell Bendix/King KDM706A DME
- Honeywell Bendix/King KDC481T Air Data Computer (ADC), King KRA-405B Radar Altimeter with Decision Height alerting displayed on EFIS, 0-2,500 ft.
- Honeywell Bendix/King RDR2000 Digital Color Radar with Vertical Profile. Avoidance range > 200 NM. Displayed on X600 Multifunction Display
- Electric Inverter, Supply 115 V/400 HZ, 36 V/400 HZ and 26 V/400 HZ AC electric power
- Dual Airspeed indicators are located on the pilot and co-pilot instrument panels.
- Dual Altimeters are located on the pilot and co-pilot instrument panels
- Dual Honeywell Bendix/King IVA 81D TCAS II
- AIM 520-10B Backup Attitude Indicator
- 503-18 (HR Smiths) Emergency Locator Transmitter
- Two KMA 24H-70 - Audio Selector/Amplifier/ICS Panels
- ICS with volume control included in KMA 24H-70 Audio Panels with Voice Operated Intercom (VOX)
- Honeywell Mk VI Enhanced Ground Proximity Warning System
- AstroTech LC-2 Quartz Chronometer
- Cabin loudspeaker allows crew to transmit messages to passengers
- Avionics Master rocker switch in Overhead Switch Panel
- Space, wiring and structural provisions for ADF #1
- Provides basic provisions for installation of the Honeywell Bendix/King KHF 1050 Radio
According: sikorsky.com
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