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The MD 600N is a stretched eight seat development of the five seat MD 520N helicopter. The original prototype was modified to MD 600N standard with a production standard engine and tail boom and flew in November 1995, followed the next month by the first MD 600N production prototype. Unfortunately this second prototype was destroyed by fire following a forced landing in May 1996, caused by the main rotor contacting the tail boom during extreme control reversal tests.
Thus the third prototype, which first flew on August 9 1996, featured modifications to increase the main rotortail boom clearance.
McDonnell Douglas stretched the MD 520N fuselage by inserting a plug aft of the cockpit/cabin bulkhead and stretching the NOTAR tail boom. The larger fuselage allows for an extra (middle) row of seats. Other differences compared with the MD 520N include a new six blade main rotor (the MD 520N has a five blade unit) and a more powerful Allison 250 turboshaft.
From the 1997 merger with Boeing they were Boeing products and since 1999, the Boeing Company?s commercial light helicopter product lines, were purchased by MDHI. |
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| Seating (normal) |
5 |
Max Takeoff (lbs) |
4,100 |
| Seating (maximum) |
7 |
Certified Ceiling (ft) |
13,800 |
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| Engines |
Rolls Royce 250-C47M |
To (Sealevel, ISA Temp) (ft) |
- |
| Output lbs ea. Flat Rating |
575shp |
Landing Distance (ft) |
- |
| Maximum Mach No. |
- |
Max Range (fuel) (nm) |
350 |
| High Speed Cruise (Kts) |
134 |
Max Range (payload) (nm) |
350 |
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| Flight Time 300nm |
- |
Flight Time 1000nm |
- |
| Flight Time 600nm |
- |
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| External |
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Internal |
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| Length (ft) |
30.40 |
Length (ft) |
9.00 |
| Height (ft) |
9.90 |
Height (ft) |
5.00 |
| Span (ft) |
27.50 |
Width: Max floor (ft) |
5.00 |
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