Primary Specifications |
Cessna 421C |
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| Engine Model: TCM GTSIO-520-L & -N |
375 hp |
375 hp |
375 hp |
| TBO hrs. |
1,600 |
1,600 |
1,600 |
| Takeoff Manifold Pressure @ 2235 rpm |
39” |
39“ |
39” |
| Twin Engine Climb - fpm |
1210 |
1290 |
1450 |
| Single Engine Climb - fpm |
250 |
250 |
315 |
| Cruise Climb Power - RPM & MP |
1900 & 32.5” |
1900 & 35.0” |
1900 & 35.0” |
| Cruise Climb to 20,000 ft - min. |
22 |
20 |
17 |
| Cruise @ 75% - 20,000 ft. - ktas |
223 |
223 |
228 |
| Cruise @ 65% - 20,000 ft. - ktas |
213 |
213 |
223 |
| Useful Load Increase - lbs. |
NA |
+110 |
+50 |
| Ramp weight - lbs. |
7,500 |
7,610 |
7,610 |
| Gross weight - lbs. |
7,450 |
7,560 |
7,560 |
| Max. landing weight - lbs. |
7,200 |
7,200 |
7,200 |
| Zero Fuel Weight when operating at : |
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| Above 7,450 lbs. Takeoff Wt. - S/N all |
NA |
6,533 |
6,533 |
At or below 7,450 lbs. Takeoff Wt. -
S/N 0001 to 0800 |
6,733 |
6,733 |
6,733 |
At or below 7,450 lbs. Takeoff Wt. -
S/N 0801 to 0910 |
6,733 |
6,733 |
NA |
At or below 7,450 lbs. Takeoff Wt. -
S/N 1001 and up |
7,000 |
7,000 |
NA |
| Wing Span |
41’ |
41’ |
44’ |
Hangar clearance@ top of winglets |
NA |
NA |
45’ - 4.8” |
| Wing Aspect Ratio |
7.86 |
7.86 |
8.62 |
| Effective Wing Aspect Ratio |
7.86 |
7.86 |
9.74 |
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Performance is based on a mid CG with mid cabin and fuel weight on an average day. Performance should always be calculated per flight environment while referring to the Manufacturer’s Pilots Operating Handbook and applicable Flight Manual Supplements for the particular airplane. Aircraft Manufacturer’s Pilot Operating Handbooks and Aircraft Owner’s Manuals should always be available and adhered to by the aircraft Pilot in Command, including attention to applicable FAA approved Flight Manual Supplements and emergency procedures for each individual aircraft. Performance should vary from airplane to airplane, atmospheric day to atmospheric day, one gross weight and CG to another, and pilot to pilot.
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Two Popular Performance Enchancing Options for Cessna 421C
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| Power-Pac Spoilers: |
| Maintaining engine temperature, while avoiding shock cooling, is essential to long term engine reliability. Power-Pac Spoilers enable you to increase descent rate by reducing lift and increasing drag almost instantaneously at the touch of a button. Lift induced loads carried by the wings are actually reduced, making spoilers doubly useful when sudden unexpected turbulence is encountered. They may be deployed at any speed up to Vne yielding rapid descent rates without the need for a major and sudden power reduction.
Consequently, the potential for engine shock-cooling or loss of cabin pressure is eliminated. Actuated by hydraulic pressure. Power-Pac units are Fail-safe with auto retract. Operational in icing conditions. Offers even deployment under all air loads. Weight is under 20 lbs. Working pressure 950 psi. Time to deploy 2 to 4 sec. Electrical requirement is 24 Volts DC @ 9.5 Amps. Optionally installed and flight tested when concurrent with a R.O.I. package.
Installed during a RAM R.O.I...............................$9,995. |
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| RAM Winglets: |
RAM engineered winglets have been designed and flight test certified to increase high altitude speed and climb performance. Installed on serial numbers -0001 through -0799 winglets increase wing span with the addition of an additional 3 ft. of wing. Because winglets adjust the wing’s center of lift, the aircraft maintains original lift with less angle of attack/frontal drag providing more speed. Each winglet is a high strength laminated composite designed to replace the original wing tip, with metallic fibers interwoven to conduct static electricity.
Each winglet cants out at a 10° angle, extends vertically 35 inches, and has a 2° toe-out. Zero fuel weight is adjusted down 200 lbs. to 6533 lbs. at RAM’s higher GW of 7,560 lbs. thus typically offering an optimum balance of fuel and payload. When winglets are installed adding additional wing span, the longer outer wing de-ice boots used for the Cessna 414A can be optionally installed on the 421C, but not required. RAM winglets are flight certified for known ice. Optionally installed, flight tested, and painted to match aircraft.
Installed.........................$39,041 |
| Performance should vary from airplane to airplane, atmospheric day to atmospheric day, one gross weight and CG to another, and pilot to pilot. |
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