Military variants known as Defenders (AH-6E, MH-6F) carry TOW missiles, FLIR, mast-mounted sight, etc.
The Model 530 Defender (has refined aerody¬namics and more power the OH-6), and AH-6 (Model 530 version for US Special Forces).
February 19, 1999: Boeing sold MD commercial line to RDM The dutch company bought the ex Mc Donnell Douglas models MD 500E and MD 530F single-engine helicopters with conventional tail rotors, the MD 520N and MD 600N single-engine NOTAR helicopters and the MD Explorer series of twin-engine, eight-place helicopters.
Commercial MD 520N and uprated (485 kW Rolls Royce 250-C30) MD 530N NOTAR helicopters announced February 1988 and officially launched January 1989. The first production prototype MD 530N (N530NT) flew on 29 December 1989, but this variant not pursued.
Flight testing of the MD 530N indicated capabilities greater than expected. With only 25.2 hours logged, a series of aerobatic manoeuvres were performed during June 1990, including loops, rolls, hammerheads and Split ‘S’ manoeuvres. In other tests the envelope was expanded to a maximum internal gross weight of 33500 lb / 1520 kg.
MD530
Engine: 1 x Allison 250- C20B turboshaft, 420 shp (313 kW)
MD530F
Engine: 1 x Allison 250-C30, 650 shp
Instant pwr: 313 kW
Rotor dia: 8.35 m
MTOW: 1405 kg
Useful load: 685 kg
Max cruise: 135 kts
Max range: 381 km
HIGE: 14,300 ft
HOGE: 12,000 ft
Crew: 1
Pax: 3
Seats: 5
530MG Defender
Engine: 1 x Allison 250-C30
Installed pwr: 317 kW
Rotor dia: 8.4 m
Fuselage length: 9.8 m
No. Blades: 5
Empty wt: 664 kg
MTOW: 1610 kg
Payload: 901 kg
Max speed: 240 kph
ROC: 505 m/min
Ceiling: 4200 m
HIGE: 2315 m
HOGE: 1770 m
Fuel cap (+aux): 240 lt ( 80 lt )
Range: 443 km
Crew: 1
Pax: 5
All Aero 