AEVEX is proud to offer the DHC-6 300HG ™ Increased MTOW Standard Commuter Category STC. Along with the added benefits of more horsepower, a four blade propeller that offers improved performance and noise reduction, the enhanced gross weight capability now provides operators with more ability to optimize payload and expand mission capability whether going further, carrying more, or staying on station longer. The DHC-6-300HG ™ STC authorizes the operation of DHC-6-300 Series Twin Otters to a maximum take-off weight of 14,000 pounds with PT6A-34 Engines operating at 750 SHP and Raisbeck/Hartzell 4-blade “Scimitar” propellers.
AUTHORIZATIONS FAA STC No. SA02682LA EASA STC No. 10069614
U.S. DOLLARS
YEAR 1
YEAR 2
$2,000,000
MTOW INCREASE OF 12% 12,500 lbs (5670 kg) to 14,000 lbs (6350 kg) Increases mtow by 1,500 lbs (680 kg) PAYLOAD INCREASE OF 31% Increased payload from 4,800 lbs (2177 kg) to 6,300 lbs (2857 kg) Based on empty weight of 7,700 lbs (3492 kg ) HORSEPOWER GAIN OF 21% (750 shp increased from 620 shp=130hp per engine )
720 Days
$1,800,000
14,000 lbs. STC + PT6A-34 Engines (NEW) + Wing Tip Tanks
$1,600,000
592 Days
$1,400,000
14,000 lbs. STC + PT6A-34 Engines (NEW)
$1,200,000
$1,000,000
$800,000
270 Days
$600,000
14,000 lbs. (6350 kg.) Baseline STC
$400,000
$200,000
$0
500
600
700
800
0
100
200
300
400 SORTIE DAYS
Payback dependent on mods required
NOISE REDUCTION OF 5% *Noise signature improvement of 4 dB
ENHANCEMENTS
Raisbeck/Hartzell four (4) bladed “Scimitar” propellers Main Landing Gear interface is reconfigured for the additional loading using same OEM gear leg configuration Increased Aerodynamics with Horizontal Stabilizer Finlets
IMPROVED CLIMB PERFORMANCE Approximate 1500 FPM at 14,000 LBS.
REVENUE GENERATION Increased value proposition to the customer, higher asset value, clear return on investment
420NM NONSTOP MISSION
420 nm Trip 7700 lbs.
Aircraft Empty Weight
Operating Empty Weight with (2) crew Estimated Fuel Burn, per hour (Average Block Time), assumed to be same for both configurations Approx. Fuel Required with reserves Pax load at 12,500 lbs. MTOW, DHC-6-300
8160 lbs. 540 lbs. (80.0 gal) 2225 lbs.
AEVEX’S DHC-6-300HG 19 PAX TM
11
Pax load at 14,000 lbs. MTOW, DHC-6-300HG ™
19
STANDARD DHC-6-300 11 PAX
Additional Revenue per day for (8) additional pax at $100 per person x (5) trips per day
$4,000
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