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1973 CESSNA 421B
Starts from the median asking price of 18 comparable Cessna 421B listings ($329,000), then adjusts for:
- Airframe time -663 hr vs comps +1.3%
- Engine time +233 hr vs comps -3.3%
- Modern GPS navigator (78% of comps) +3.1%
- Autopilot (83% of comps) +0.5%
- ADS-B (67% of comps) +0.9%
- Market supply: 18 for sale of 224 FAA-registered -1.7%
Shown as a range. An estimate from asking-price comparables and FAA supply data — not an appraisal.
Overview
| Make / Model | Cessna 421B |
|---|---|
| Type | Multi-Engine Piston |
| Airframe time | 6,003 hrs |
| Engine time | 539 SMOH |
| Avionics / flight deck | GARMIN GI 275 |
| Avionics / GPS | Garmin GNS 430 |
| Avionics / Transponder | Garmin GTX 330ES |
| Avionics / Primary flight display | GARMIN GI 275 |
| Avionics / GPS / nav | GNS 430W |
| Avionics / Autopilot | STEC |
| Avionics / Weather radar | RDS 81 |
| Avionics / ADF | KR87 |
| ADS-B | Yes |
| Annual | July 2026 |
| Inspection | Annual |
| Airworthy | Yes |
Description
Experience superior versatility with this pressurized 1973 Cessna 421B, featuring a total time of 6,003 hours. Powered by twin turbocharged Continental GTSIO520H engines delivering 375 HP each, this aircraft is equipped with McCauley props (50 hours since overhaul) and a RAM Prop Synchrophaser. The advanced cockpit boasts a Garmin GI 275, Avidyne EX500 MFD, GNS430W, and an S-TEC System 55X autopilot with yaw damper. Designed for long-range comfort, it offers a 2,265 lb useful load, 222-gallon fuel capacity with auxiliary tanks, and factory air conditioning. The 2006 gray leather interior includes an aft refreshment center and belted lavatory. Safety is prioritized with Goodyear de-ice boots, vortex generators, and a Cleveland brake conversion. Complete logs are available for this airworthy aircraft, which had an annual completed in July 2026.
Modifications
Cleveland Brake Conversion Vortex Generators Full Goodyear De-Ice Boots w/ Alc Windshield & Electrothermal Prop De-ice Cleveland Brake Conversion Factory Air Conditioning 222 gal. Fuel System (LH Nacelle)
Avionics
Garmin GNS 430W (x2) Garmin GI275 MFD/Horizon Avidyne EX500 MFD Garmin GTX-330ES ADS-B out w/mode S w/TIS Transponder Garmin 340 Audio Panel STEC-55X Autopilot w/ Alt pre-select & Yaw damper WX 1000+ Stormscope King KR87 ADF (INOP) Slaved HIS 2nd Glidescope Slaved King DME King KT-76A Transponder RAM Prop Synchrophaser Shadin Digital Fuel Totalizer 8 place intercom with music input Dual Insight GEM Engine Analyzers Bendix RDS 81 Color Radar EI multi-function clock Backup pilot artificial horizon
Recommended avionics upgrades
A GNS 430 upgrades naturally to the GTN 650Xi — same footprint, touchscreen GPS/nav/comm with LPV approaches.
See prices & suppliers ›Suggestions are based on the panel described in this listing; verify STC approval for this make/model before any installation.
Service Difficulty Reports (SDRs)
Checking FAA service difficulty reports…
Airworthiness Directives (ADs)
Checking airworthiness directives…
How this aircraft compares
Where this Cessna 421B lands versus other Cessna 421B listings on fyiAero.
Price
33rd pct$219k · 33rd percentile of 18 listings
Airframe time
53rd pct6,003 hours total (TTAF) · 53rd percentile of 19 listings
Engine time (Engine 1)
42nd pct539 hours since major overhaul · 42nd percentile of 19 listings
Engine time (Engine 2)
99th pct1,435 engine hours · 99th percentile of 19 listings
Percentile = share of comparable listings at or below this value. Lower airframe/engine hours are generally fresher; price reflects the asking price only.
General
| Year | 1973 |
|---|---|
| Manufacturer | CESSNA |
| Model | 421B |
| Serial Number | 421B-0454 |
| Registration # | N711TP |
| Condition | Used |
Airframe
| Total Time | 6,003 |
|---|---|
| Useful Load | 2,265 lb |
| Fuel Capacity Volume | 222 gal |
| Auxiliary Fuel Tank | Yes |
| Complete Logs | Yes |
Engine 1
| Engine 1 Make/Model | CONTINENTAL GTSIO520H |
|---|---|
| Engine 1 Horsepower | 375 HP |
| Engine 1 Time | 539 SMOH |
| Engine 1 TBO | 1600 |
| Engine 1 Turbocharged | Yes |
Engine 2
| Engine 2 Make/Model | CONTINENTAL GTSIO520H |
|---|---|
| Engine 2 Horsepower | 375 HP |
| Engine 2 Time | 1,435 |
| Engine 2 Turbocharged | Yes |
Props
| Prop 1 Manufacturer | MCCAULEY |
|---|---|
| Prop 1 Time | 50 SOH |
| Prop 2 Manufacturer | MCCAULEY |
| Prop 2 Time | 50 SOH |
| Props Sync | Yes |
Avionics
| Flight Deck Manufacturer/Model | GARMIN GI 275 |
|---|---|
| Multi-Function Display 1 Manufacturer/Model | AVIDYNE EX500 |
| Multi-Function Display 2 Manufacturer/Model | GARMIN GNS430W |
| Transponder 1 Manufacturer/Model | GARMIN GTX330ES |
| Transponder 2 Manufacturer/Model | BENDIX/KING KT76A |
| Autopilot Manufacturer/Model | S-TEC SYSTEM 55X |
| ADS-B Equipped | Yes |
| WAAS | Yes |
| Yaw Damper | Yes |
| Engine Monitor | Yes |
| Avionics/Radios | Garmin GNS 430W (x2) Garmin GI275 MFD/Horizon Avidyne EX500 MFD Garmin GTX-330ES ADS-B out w/mode S w/TIS Transponder Garmin 340 Audio Panel STEC-55X Autopilot w/ Alt pre-select & Yaw damper WX 1000+ Stormscope King KR87 ADF (INOP) Slaved HIS 2nd Glidescope Slaved King DME King KT-76A Transponder RAM Prop Synchrophaser Shadin Digital Fuel Totalizer 8 place intercom with music input Dual Insight GEM Engine Analyzers Bendix RDS 81 Color Radar EI multi-function clock Backup pilot artificial horizon |
Additional Equipment
| Pressurized | Yes |
|---|---|
| Inadvertent Ice Protection | Yes |
| A/C | Yes |
| Additional Equipment | Vortex Generators Full Goodyear De-Ice Boots w/ Alc Windshield & Electrothermal Prop De-ice Cleveland Brake Conversion Factory Air Conditioning 222 gal. Fuel System (LH Nacelle) |
Modifications/Conversions
| Vortex Generators | Yes |
|---|---|
| Modifications/Conversions | Cleveland Brake Conversion |
Interior
| Year Interior | 2006 |
|---|---|
| Lavatory | Yes |
| Configuration | Passenger |
Inspection Status
| Inspection Status | Annual Completed July 2026 NKDH |
|---|---|
| Airworthy | Yes |
Operating costs & specifications — Cessna 421
Typical model-level figures for the Cessna 421 (not this specific airframe).
Performance & dimensions
| Range | 826 nm |
|---|---|
| Cruise speed | 222 kts · 255 mph |
| Takeoff / landing | 2012.0 / 1045.0 |
About this plane
Twin engine piston aircraft with retractable landing gear. The 421 seats up to 6 passengers plus 1 pilot.
Range from base
Still-air range ring — type an aircraft to change it. Compare aircraft on the Range tool ›
Last flight
Actual flight path from FlightAware for N711TP. More flight tracking ›
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