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Beechcraft 58 Baron


Baron 58

First flown in June 1969, the Baron 58 became a part of the lineup in 1970, replacing the 56TC, and used the 285-hp Continental engine. It had the fuselage lengthened by 0.25m to provide a more spacious cabin, and an extension of the wheelbase. Ready acceptance of this improved Baron, with delivery figures that averaged about two per week for more than 12 years, resulted in the introduction of a pressurised Model 58P, with first deliveries in late 1975. Beechcraft has added two new versions, the 58P for over-the-weather pressurized comfort and the Baron 58TC for high-altitude performance.

The Baron 58P, Continental TSIO-520-L, 310 hp each, was priced at $200,750 (1976), with propeller synchrophasers as standard. Both these additions use the same 310-hp turbocharged Continental engines enabling them to have a service ceiling of 25,000 feet and above. The Model 58P combined the Model 95-B55 wings, Model 58 tail unit, a strengthened Model 58 fuselage to cater for pressurisation, and main landing gear units as developed for the Model 60 Duke.

All Baron 58s have accommodations for four to six passengers with optional club seating where the rear two pairs face other.

By mating the turbocharged powerplants and beefier wings of the pressurized Baron with the lighter fuselage of the Model 58, Beech has developed a versatile light twin that capitalizes on the performance advantages of turbocharging without adding the cost and weight of pressurization. Everything about the 58TC that doesn't involve pressurization is identical to the equivalent part of the Baron 58P: its wings and landing gear accept the same increased gross weight of 6,100 pounds, its engines also are 310-hp Continental, and its fuel tanks hold an optional capacity of 190 usable gallons. But the 58TC doesn't require the extensive pressurization hardware, wider window posts and smaller rear door that characterize the 58P. The standard Baron 58 fuselage with its convenient double rear-entry doors has been retained to produce an aircraft with the altitude performance of the 58P but with a considerably lower empty weight, a 35-percent-higher floor loading capacity and a lower price tag.

Automatic-wastegate turbocharging, which is the type used on the Baron 58TC, allows an engine to deliver its rated horse-power up to the altitude where the wastegate is fully closed and no more exhaust can be diverted to the turbocharger. For the 58TC, that "critical altitude" is higher than its certificated ceiling of 25,000 feet, which was established on the basis of the 58P design requirements, since FAR 23 places additional structural requirements on pressurized aircraft operating above FL 250. (The 58TC and the 58P share the same type certificate.)

By conditionally restricting the maximum rpm to 2,600, Beech was able to certificate the 58TC to the noise standards that were scheduled to become law in 1980, but that also reduced the normal operating power of each engine from the P Baron's 310 at 2,700 rpm to 301 hp. The pressurized Baron therefore enjoys slightly better twin-engine takeoff performance compared with the 58TC because it has three percent more power available continuously from its engines, but single-engine performance and operations below 97-percent power are the same for both aircraft whenever they are flown at identical weights.

Unlike earlier Barons, the 58P and 58TC are certificated under FAR Part 23, amend-ments 1 through 12. The 58P went through an entire certification process (as opposed to a testing of only the things that have been changed). The wings of the -P and the TC have been strengthened with heavier spars, thicker leading-edge skin and an extra attach point on a stub spar, as on the Duke, which is built in the same plant. And while they were at it, Beech's designers also put Duke landing gear and brakes on the new Barons.

Beechcraft 58P pressurized Baron looks like a Baron 58 but the windows are slightly smaller. A quarter inch comes off all the way around in the process of adding beef to the structure for pressurization. There's a door at the left rear as well as the standard right front door. Some side-mounted airscoops adorn the engine nacelles, and the nacelles are slightly longer than on the other Barons.

Comparing the Pressurized Baron with the regular 58, there are two basic differences: the 58's en-gines are not turbocharged, and its cabin is not pressurized. The airplanes have about the same speed down low; the 58P starts to move away up high, where the turbochargers do their thing. However, because climbing time must be considered, the time en route on most trips would be very close, unless the 58P were to find a more favorable wind up high. The cabins are the same, and the useful loads are close. In operational range, the 58 has a rather clear advantage over the 58P. It also has almost twice the single-engine rate of climb at sea level, but the 58P's turbo-chargers turn the tables on that score at altitude.

An increase in structural capacity allows the 58TC to carry 350 pounds more than the Baron 58. In 1977, a new three-blade propeller is standard on the 58P. Two inches shorter, it improves maximum speed and increases the climb rate by more than 100 fpm. That year, club seating in all models, simplified fuel management, and increased optional fuel capacities were added.

Beech made significant changes in the 58P for 1979. Horsepower increased from 310 to 325 per side, with the Continental TSIO-520-WB replacing the 520-Ls used previously. A heavier crankcase and improved pistons and crankshaft were the main internal changes, allowing the maximum manifold pressure to be raised from 38 to 39.5 inches. The extra power permitted not only a 100-pound increase in maximum gross weight, but also a higher single-engine rate of climb. The cabin pressure differential also went up from 3.7 pounds per square inch to 3.9 psi, giving a cabin altitude of 11,800 feet when the airplane is at its 25,000-foot maximum certificated ceiling. Optional 196-USG fuel tanks (190 usable), comprising four interconnected quick-drain cells in each wing.

4700 Barons had been delivered by 1980, by January 1989 2,182 Model 58s had been delivered. Optional equipment on the 58, E55 and B55 are heavy-duty brakes that offer up to 50 per cent greater stopping power. In 1979, the pressurized Baron’s performance was enhanced by an increase in horsepower from 310 to 325 with the Continental TSlO-520-WB six-cylinder engine. Providing a higher degree of performance, the turbocharged, fuel-injected engine is exclusively a Beech powerplant — shared only by the 58TC. With the additional horsepower, the Baron 58P has a top speed approaching 300 mph. The P-Baron's pressurization system features a variable-rate controller, which allows cabin climb to be adjusted in relation to air-craft climb: you can smoothly reach maximum pressure differential (3.7 psi) at the same time you reach cruise attitude. The same is true on letdown.

Maximum cruise speed for the 58TC was increased to 277 mph. Pressurization differential in the 58P was increased from 3.7 psi to 3.9 psi, providing a sea-level cabin up to 8350 feet. At 25,000 feet, the Baron’s service ceiling, the cabin is a comfortable 11,900 feet.

The Baron's range is increased by as much as 253 miles with optional wet wing tips added to the existing fuel cell system. The Baron 58's capacity will be increased by 28 gallons and the 58P and 58TC by 24 gallons with the addition of the wet wing tips.

In addition to Beech production Barons, at least two turboprop conversions have been developed by other constructors. These include the SFERMA Marquis, produced in small numbers in France, and combining Beech-built Baron airframes with 328kW Turbomeca Astazou engines; and the American Jet Industries Turbo Star Baron powered by two 298kW Allison 250-B17 turboprops.


Baron 58
Engines: 2 x Continental IO-520-C, 285 hp
Wing span: 37 ft 10 in / 11.53 m
Length: 29 ft 10 in / 9.09 m
Cabin length: 12 ft 10 in / 3.01 m
Cabin max width: 3 ft 6 in / 1.07 m
Cabin max height: 4 ft 2 in / 1.27 m
Cabin volume: 135.9 cu.ft / 3.85 cu.m
Baggage compartment fwd: 18 cu.ft / 0.51 cu.m / 300 lb / 136 kg
Baggage compartment rear: 37 cu.ft / 1.05 cu.m / 400 lb / 181 kg
Extended rear baggage compartment: 10 cu.ft / 0.28 cu.m / 120 lb / 54 kg
Empty weight equipped: 3268 lb / 1482 kg
MTOW: 5400 lb / 2449 kg
Max cruise 75% pwr 7000ft / 2135m: 200 kt / 230 mph / 370 kph
Max ROC SL: 1694 fpm / 516 m/min
Service ceiling: 17,800 ft / 5425 m
Range 65% pwr 11,00ft / 3355m: 1052 nm / 1212 mi / 1950 km +res
Seats: 4-6


BE-58 BARON 58
First year built: 1970.
Engines, Two Continental IO-520-CB @ 285hp each.
TBO: 1700 hrs.  
Props: Hartzell 2 blade 78 in.
Seats: 4/6.
Max speed, 208kts.
Cruise speed, 6,000ft: 200kts,
Cruise speed, 8,000ft @ 65% pwr: 190 kts,  
Cruise speed, 10,000ft: 195kts,
Cruise speed, 12,000ft: 184kts.
Fuel flow @ 65% pwr @ 8000 ft: 161 pph.
Endurance @ 65% pwr @ 8000 ft: 7 hr.
Cruise range: 1108-1339nm.
Climb rate: 2eng - 1660fpm @ 104 kts,
Climb rate: 2 Eng. @ 8000ft: 960 fpm.
Climb rate: 1eng - 390fpm @ 100 kts.  
Climb gradient: 958 ft/nm.
SE climb gradient: 234 ft/nm.
Service ceiling 2 eng - 18,600 ft
Service ceiling 1 eng - 7,000ft.
Stall speed: 84 kts
Stall speed gear/flaps down: 74kts.
Take-off dist: 1336ft - to 50’: 2101ft.
Landing dist: 1439ft, From 50ft: 2498ft.
Empty wt: 3361lbs.
Max ramp wt: 5424lbs.
Max T/O wt: 5400lbs.
Max ldg wt: 5400lbs.
Useful load: 2063lbs.
Wing area: 199.2 sq ft.
Wing span: 37ft 10in.
Wing aspect ratio: 7.2.
Wing loading: 27.1 lbs/sq.ft.
Power loading: 9.5 lbs/hp.
Length: 29ft 10in.
Height: 9ft 6in.
Useable fuel: 136, 166 or 194 gal.
Turbulent air penetration speed: 156 kts.

First year built: 1975.
Engines: 2 x Continental TSlO-520-WB, 325 hp.
TBO: 1600 hrs.
Props: Hartzell 3 blade 78 in.
Seats: 4/6.
Max speed: 261 kts.
Cruising Speed: 65% pwr @ 8000 ft: 191 kts.
Cruising Speed: 65% pwr @ 18,000ft: 211 kts.
Cruising Speed: 75% power @ 20,000 ft: 247 mph,
Cruising Speed: 65% power @ 20,000 ft: 232 mph.
Fuel flow @ 65% pwr @ 18,000 ft: 189 pph.
Endurance @ 65% pwr @ 18,000 ft: 5.8 hrs.
Stall Speed: 84 kts, gear/flaps down: 78 kts.
Vmc: 81 kt.
Rate of Climb: Two engines 1475 fpm @ 115 kts
ROC @ 8000 ft: 1281 fpm, One engine 205 fpm @ 115 kts/SL, 107 fpm @ 115 kts/10,000ft.
Climb gradient: 770 ft/nm.
SE climb gradient: 141 ft/nm.
SE ceiling: 13,490 ft.
Takeoff (50 ft obstacle): 2761 ft.
Takeoff: 1654 ft.
Range: 75% power @ 20,000 ft: 937 mi, 65% power @ 20,000 ft: 1021 mi.
Certificated ceiling: 25,000 ft.
8,000 ft cabin alt @: 19,250 ft.
Turbulent air penetration speed: 170 kts.
Empty Weight 4010 lbs.
Max T/O Weight 6200 lbs
Max useful load: 2230 lbs.
Max landing wt: 6200 lbs.
Wing Loading 32.4 lbs/sq.ft.
Power Loading 9.5 lbs/hp.
Fuel Capacity 166 gals, 1140 lbs.
Wingspan 37 ft 10in.
Length 29 ft 11 in.
Height 9 ft 2 in
Wing Area 188.1 sqft.
Wing aspect ratio: 7.6.

Baron 58P
Engines: 2 x Continental TSIO-520-L, 310 hp.
TBO: 1,400 hrs.
Props: constant-speed, full feathering, three-blade, 80-in dia.
Length: 29 ft. 11 in.
Height: 9 ft. 2 in.
Wingspan: 37 ft. 10 in.
Wing area: 188.1 sq. ft.
Wing loading: 32.4 lb/sq.ft.
Seats: 6.
Empty wt: 4,374 lbs.
Useful load: 1766 lbs.
Max ramp wt: 6,140 lbs.
Gross wt: 6,100 lbs.
Pwr loading: 9.8 lb/hp.
Fuel cap: 166 USG/996 lbs.
Minimum runway requirement: 2,761 ft.
ROC: 1,424 fpm.
SE ROC: 205 fpm.
Max op alt: 25,000 ft.
SE service ceiling: 13,220 ft.
Max speed: 231 kt.
Cruise (75% power @ 20,000ft): 215 kt.
Cruise (67% power @ 20,000ft): 202 kt.
Range (75% power @ 20,000 ft, 45-min res): 814 nm.
Range (67 % power 20,000 ft, 45-min res): 887 nm.
Duration @ 67 % power, no res: 5.5 hrs.
Stall speed (clean): 80 kt.
Stall speed (gear, flaps down): 76 kt.

BE-58TC Baron TC
First built: 1976.
Engines: Continental TSIO-520-WB, 325 hp each.
TBO: 1600 hrs.
Props: Hartzell 3-blade, 78-in.
Seats: 4/6.
Length: 29.9 ft.
Height: 9.2 ft.
Wingspan: 37.8 ft.
Wing area: 188 sq.ft.
Wing aspect ratio: 7.6.
Maximum ramp weight: 6240 lbs.
Maximum takeoff weight: 6200 lbs.
Standard empty weight: 3793 lbs.
Maximum useful load: 2447 lbs.
Zero-fuel weight: 5700 lbs.
Maximum landing weight: 6200 lbs.
Wing loading: 33 lbs/sq.ft.
Power loading: 9.5 lbs/hp.
Equipped useful load: 2191 lb.
Payload max fuel: 1051 lb.
Range max fuel/cruise: 1077nm/4.4hr.
Range max fuel /range: 1403nm/7.0hr.
Maximum usable fuel: 1140 lbs.
Best rate of climb: 1,475 fpm @ 115 kts.
Climb gradient: 770 ft/nm.
Rate of climb @ 8,000 ft: 1329 fpm.
Certificated ceiling: 25000 ft.
Maximum single-engine rate of climb: 270 fpm @ 115 kts.
Single-engine climb gradient: 141 ft/nm.
Single-engine service ceiling: 13490 ft.
Maximum speed: 261 kts.
75% cruise: 241 kt.
55% cruise: 202 kt.
Vmc: 65 kt.
Vso: 77 kt.
Cruise @ 65% pwr @ 8,000ft: 191 kts.
Cruise @ 65% power @ 18,000ft: 211 kts.
Fuel flow @ 65% pwr @ 18,000 ft: 189 pph.
Endurance at 65% pwr @ 18,000 ft: 5.8 hrs:
Stalling speed clean: 84 kts.
Stalling speed gear/flaps down: 78 kts.
Turbulent-air penetration speed: 170 kts.

Engines Continental TSIO-520-L, 301 hp @ 2,600 rpm.
TBO: 1,400 hrs.
Propellers Hartzell three-blade, 78-in. diameter.
Length: 29 ft. 11 in.
Height: 9 ft. 2 in.
Wingspan: 37 ft. 10 in.
Airfoil NACA 23016.5 root, 23010.5 tip.
Aspect ratio 7.16.
Wing area 188.1 sq. ft.
Wing loading 32.42 lbs./sq. ft.
Power loading 10.13 lbs./hp.
Seats: 6.
Gross weight: 6,100 lbs.
Empty weight: 4,016 lbs.
Useful load: 2,039 lbs.
Payload with full fuel 899 lbs.
Fuel capacity (standard) 116 USG/996 lbs.
Fuel capacity (optional) 190 USG/1,140 lbs.
Baggage area 28 cu. ft.
Baggage capacity 470 lbs.
Minimum runway requirement 2,495 ft.
Rate of climb 1,461 fpm.
Single-engine rate of climb 204 fpm.
Service ceiling 25,000 ft.
Single-engine service ceiling 14,400 ft.
Maximum level speed 249 knots.
Cruise (74% @ 25,000 ft.) 231 knots.
Economy cruise (55 % @ 25,000ft) 202 knots.
Range @ maximum cruise (optional tanks, 45-min res) 1,020 nm.
Range @ economy cruise (optional tanks, 45-min res) 1,265 nm.
Duration @ max cruise (no res) 5 hrs.
Duration @ economy cruise (no res) 8.25 hrs.
Maneuvering speed 170 knots.
Stall speed (clean) 83 knots.
Stall speed (gear, flaps down) 75 knots.

2008 Beechcraft Baron G58
Engine: Continental IO-550C, 300 hp@SL
TBO: 1700 hr
Fuel type:100LL
Propeller type: CS
Landing gear type: Tri./Retr.
Max ramp weight:5524 lb
Gross weight: 5500 lb
Landing weight: 5400 lb
Maz zero-fuel weight: 5215 lb
Empty weight, std: 4050 lb
Useful load, std: 1450 lb
Payload, full std. fuel: 286 lb
Usable fuel, std: 194 USgal
Wingspan: 37 ft. 10 in.
Overall length: 29 ft. 10 in.
Height: 9 ft. 9 in.
Wing area: 199 sq. ft
Wing loading: 27.6 lbs./sq. ft
Power loading: 9.2 lbs./hp
Wheel size: 6.00 x 6 in
Seating capacity: 6
Cabin doors: 2 (3)
Cabin width: 42 in
Cabin height: 50 in
Cruise speed 75% power: 202 kt
Cruise speed 65% power: 192 kt
Cruise speed 55% power: 177 kt
Max range 75% power: 1052 nm
Max range 65% power: 1101 nm
Max range 55% power: 1388 nm
Vso : 75kt
Best rate of climb, SL: 1700 fpm
Best rate of climb, SE: 390 fpm
Service ceiling: 20,688 ft
Service ceiling, SE: 7284 ft
Takeoff ground roll: 2300 ft
Landing ground roll: 1300 ft


B58 Baron





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