Beechcraft Model 18 Checklist
Beechcraft Model 18 · Checklist
Overview
This document serves as a checklist for the Beechcraft Model 18, a twin-engine aircraft known for its robust design and historical significance. The Beech 18 first flew in 1937 and has been a staple in various aviation roles, including military training during World War II. This checklist is intended for pilots and aviation enthusiasts who operate or are interested in the Beech 18, providing essential procedures and specifications to ensure safe and efficient flight operations. It includes critical airspeeds, operational limits, and maintenance considerations, reflecting the aircraft's unique characteristics and requirements.
- Wingspan: 49 ft 8 in; Length: 35 ft 2 in; Height: 10 ft 5 in.
- Maximum Gross Weight: 6,625 lb; Useful Load: 3,790 lb; Fuel Capacity: 318 gal (312 gal usable).
- Rate of Climb: 1,410 fpm; Service Ceiling: 21,000 ft; Single-Engine Service Ceiling: 7,750 ft.
- Key Airspeeds: VMC: 71 KIAS; VR: 87 KIAS; VNE: 222 KIAS.
- Regular maintenance is critical to prevent oil leaks and ensure performance. Active noise-canceling headsets are recommended for comfort.
Document
Source
Originally published by aeroresourcesinc.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Checklist
- Year
- 1999
- Pages
- 6
- File size
- 5.1 MB
- Publisher
- aeroresourcesinc.com
Most owners only have the POH. Here's the essential set for the Beechcraft Model 18.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
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In this document
Specifications
The Beechcraft Model 18 is powered by two Pratt & Whitney R-985AN-14B engines, each producing 450 horsepower. The aircraft has a wingspan of 49 feet 8 inches, a length of 35 feet 2 inches, and a height of 10 feet 5 inches. It has a maximum gross weight of 6,625 pounds and a useful load of 3,790 pounds. The fuel capacity is 318 gallons, with 312 gallons usable.
Performance
The Beech 18 has a maximum demonstrated crosswind component of 20 knots and a rate of climb at sea level of 1,410 feet per minute. The aircraft's service ceiling is 21,000 feet, with a single-engine service ceiling of 7,750 feet. The takeoff distance over a 50-foot obstacle is 1,980 feet.
Limiting and Recommended Airspeeds
Key airspeeds for the Beech 18 include VMC at 71 KIAS, VR at 87 KIAS, and VNE at 222 KIAS. The best rate of climb (Vy) is 81 KIAS, while the stall speed in landing configuration (VSO) is 73 KIAS.
Operational Considerations
Pilots should be aware of the aircraft's tailwheel characteristics, requiring careful management during takeoff and landing to prevent ground looping. The aircraft's large cockpit windows provide excellent visibility, but noise levels are significant, necessitating the use of active noise-canceling headsets.
Maintenance and Care
The Beech 18 requires diligent maintenance, particularly regarding its Pratt & Whitney radial engines, which are known for their oil leaks. Regular inspections and cleanings are essential to maintain operational integrity and performance.
Safety notes
- Ensure tailwheel is locked before takeoff and landing to prevent ground looping.
- Monitor engine parameters closely; this aircraft requires procedural management.
Full document text
obvious that the gleaming gem was one rare Beech. This stunning example of a corporate time machine belongs to Jim Warren and his wife, Georgia, of Denver. Although it looks vintage 1940s, Warren's airplane was actually manufactured in 1960. It's a Super GIS and was the last of the tail dragger twin Beeches. The com- pany built a final version, the model HIS, with a funny wheel under the nose-but it just never looked right to most twin Beech aficionados. To the purists, the G model was the last of the "real" twin Beeches. As it sits on the ramp, the Beech IS is grand and imposing. With a wing- span of 49 feet, eight inches, and 10 feet five inches from the ground to the tip of its rounded, retro antenna atop the fuselage, this is obviously not your average Baron. The size of the airplane is a large part of its allure. The Model IS Beech first flew in 1937 and was manufactured alongside the Model 17 Staggerwing. As Beech's first twin-engine airplane, it must have turned some heads when it was first introduced. Cessna's T-50 "Bam- boo Bomber" was still a couple of years away. The twin Beech served many of the armed forces in World War II as a transport, high-altitude reconnaissance trainer, and bomber trainer-an estimated 90 percent of As it sits on the ramp, the Beech 18 is grand and imposing. This is not your average Baron. the bomber pilots in World War II trained in the Beech IS. Over the 32- year production run, 7,091 aircraft were built, with the last of the produc- tion running concurrently with the turbine-powered Model 65-90 King Air. Production of the Model IS ended in 1969, with the final aircraft, a tri- gear H model, going to Japan Airlines as a trainer. Most twin Beeches are never seen; they haul countless tons of auto parts, mail, fish, or newspapers in the mid- dle of the night, with oil dripping off every trailing edge and patched fabric control surfaces the norm, not the exception. There is no glory to this kind of work; the Beech IS just gets AOPA PILOT· 78. JULY J999 the job done night after night. But this polished Beech never slung ice or dirt- ied its floor as a freighter; it has served its previous four owners and Jim War- ren only as a corporate chariot. Warren bought the airplane in June 1993 from a rebuilder in Oklahoma. About 95 percent of the polished air- frame restoration was completed, and it was in pretty good shape when War- ren took it home. But as soon as he got it into his meticulous hangar at Centennial Airport in Colorado, War- ren began another long phase of the airplane's metamorphosis into a show-stopper. Every restoration project, it seems, has at least one incredible story that illustrates the synchronicity of these labors of love and lira. When Warren bought his twin Beech, he gutted the inside of the airplane and immediate- ly began redesigning the instrument panel, which was vintage hodgepodge. Around 10:30 one night, while Warren and a helper were working on the air- plane, a man walked up, admired the Beech for a moment, then asked, "Would you like to have a blank instrument panel for this airplane?" The late-night visitor was a local pilot who had found an uncut instru- ment panel hanging in his neighbor's garage; the neighbor had apparently bought the panel blank at a garage sale years before and had no clue as to what it really was. The neighbor gladly gave away this "worthless" piece of aluminum and the pilot visitor had saved it fOLwell, he really didn't know what, until he stood in the doorw.ay of Warren's hangar, admiring the pol- ished Beech. Warren bought the panel, and it is now filled with a modern mixture of Bendix/King avionics and color radar, AOPA PILOT' 79 . JULY 1999 an IFR-certified GPS, and a Century III autopilot. The new panel would look right at home in a King Air. Warren regularly flies the aircraft IFR, and the capability of the avionics has been a real boon to the big Beech's utility. The interior would look equally at home in the Model18's bigger kero- sene-burning brethren. Warren picked the soft tan color scheme and fabrics. The refurbishment took more than a year to complete-with plenty of help. Originally, the airplane fea- tured a factory-installed three-place bench seat along one wall. Warren changed it to a more practical center club arrangement. The bar/refreshment center and small potty in the rear of the cabin make long cross-country flights very comfortable affairs. "This airplane is creature-com- fort comfortable," Warren proudly boasts. Georgia, his wife of 23 years-whom Jim de-scribes as "a white- knuckle flier" -loves the Beech and finds the com- fortable interior a major improvement over their other aircraft, an open- cockpit Waco QCF-2. AOPA PILOT' 80 . JULY 1999 Headsets are a must for this old girl if you want to have any hearing in your old age. The Beech's Pratt & Whitney R-985 radials were re-built by Sam Thomp- son of Tulsa Aircraft Engines, the "finest round engine shop in the world," Warren claims. When re- assembling the parts, Warren asked the overhauler to paint the cylinder barrels gray, not black, and the inside of the cowling white to make oil leaks easier to intercept. By the way, there are no oil leaks on this Beech; Warren doesn't allow that kind of thing. In two days of flying the airplane for this arti- cle, I never saw a drop of oil on the floor, in the wheel wells, or on the cowling. That's unheard of for a round engine. For engines that have always been acknowledged to be a little leaky ("If it ain't leaking, it's out of oil"), to see an engine as clean as this one makes you wonder if you aren't missing a cleanup crew's after- hours efforts. Warren spent two and a half years finishing the air- plane's restoration, doing much of the work him-
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self-he was a mainte- nance officer and crew chief on Sikorsky heli- copters in the military. Much of his effort was sup- plemented by local corpo- rate pilot and A&P Jeff· Benger, who provided the' expert eye and know-how to finish the job right. With the project done, Warren has flown his air- "This airplane is creature-commfort commfortable,"proudly boasts its owner. plane almost 300 hours, including trips as far away as Bangor, Maine, and Buffalo, New York. After 20 years as a hospital administrator and owner of a company that manufactured hospital surgical products, Warren now builds self-storage units along the Colorado Front Range. \ AOPA PILOT· 82. JULY 1999 Beech GI8 Price when new: $63,000 Price as tested: $400,000 There are no oil leaks on this Beech; the owner doesn't allow that kind of thing. Specifications (2) 450-hp Pratt & Whitney R-985AN-14B Recommended TEO 1,450 hr Propellers Hartzell, 3 blade, constant speed, full feathering HC-330-2E, 95 in dia. 35 ft 2 in 10 ft 5 in 49 ft 8 in 324.4 sq ft 29.9Ib/sq ft 1O.781b/hp 7 10 ft 5 in 4 ft4 in 5 ft 6 in 5,910 lb 6,625 lb 9,7001b 3,7901b 3,0751b 1,8821b 1,1671b 9,7001b 9,4001b 318 gal (312 gal usable) 1,9081b (I,872lb usable) 28qt 250lb Limiting and Recommended Airspeeds VMC (min control w/critical engine inoperative) 71 KIAS 81 KIAS 100 KlAS 101 KIAS 133 KIAS 104 KIAS 139 KIAS 139 KIAS 178 KIAS 222 KIAS 87 KIAS 81 KlAS 73 KIAS Vx (best angle of climb) Vy (best rate of climb) VYSE (best engine-out rate of climb) VA (design maneuvering) VFE (max flap extended) VLE (max gear extended) VLO (max gear operating) VNO (max structural cruising) VNE (never exceed) VR (rotation) VS1 (stall, clean) VSO (stall, in landing configuration) For more information, contact Ron Hyde, president of the Beech 18 Society, a division of the Staggerwing Museum Foundation, Inc., Post Office Box 550, Tullahoma, Tennessee 37388; 830/583- 9897; fax 830/583-9749; e-mail rhyde@fnichols.com All specifications are based on manufacturer's cal- • culations. All performance figures are based on standard day, standard atmosphere, sea level. gross weight conditions unless otherwise noted. Max demonstrated crosswind component 20 kt Rate of climb, sea level 1,410 fpm Single-engine ROC, sea level 255 fpm Maximum level speed, sea level 194 kt Cruise speed/endurance w/45-min rsv, std fuel (fuel consumption, ea engine) @ 66.7% power, best economy 166 kt/5.5 hr 9,000 ft (143 pph/23.8gph/eng) @53.3'7'0power, best economy 161 ktl7.5 hr 10,000 ft (113 pphll8.9 gph/eng) Service ceiling 21,000 ft Single-engine service ceiling 7,750 Landing distance over 50-ft obstacle 1,850 ft of other hands on the controls for landing-but having landed sever- al other twin Beeches, I can say that there's nothing cantankerous about the airplane's ground habits. As with most tail draggers, the tailwheel must be on the deck before the rudder loses effectiveness-espe- cially in a crosswind, but that's just taking care of business in a twin Beech. It's got a great, fat wing that allows easy slow flight and gentle stalls; final approach speeds of 90 miles per hour (78 knots) are quite comfortable. When asked what he likes most about his twin-tailed Beech, Warren admits, "That little donut under the tail" (He means the tail wheel) . He then talks at length about his love of radial engines, and the era of the airplane. Are you a hopeless romantic? I ask. "Yes," he admits with- out hesitation. 0 1,980 ft Oil capacity, ea engine Baggage capacity Performance Takeoff distance over 50- ft obstacle Powerplants Length Height Wingspan Wing area Wing loading Power loading Seats Cabin length Cabin width Cabin height Empty weight Empty weight, as tested Maximum gross weight Useful load Useful load, as tested Payload w/full fuel Payload w / full fuel, as tested Maximum takeoff weight Maximum landing weight Fuel capacity, std His goal is to fly his Beech to Europe and Alaska, although he admits either would be "one helluva trip" even in the luxury of his leather-trimmed cabin. Since his airplane has no deice boots and is not equipped for flight into known icing conditions, he is very cautious about weather forecasts. Warren estimates his cruise speed at 150 knots and figures that he burns 19 to 20 gph per engine at 50-percent power. With 318 gallons of fuel, the Beech has great range-Warren fig- ures about six hours, or just under 1,000 nautical miles, with good reserves. Warren is compulsive about this Beech; he insists that your feet are clean (or shoes removed) before walk- ing up the airstair door. He often walks around the airplane with a cleaning rag in hand as it sits on the ramp or in the hangar, removing errant fingerprints and kamikaze bugs. It takes that kind of effort to pro- duce and keep an airplane like this one-a critical eye, and devotion to making it perfect. Flying a twin Beech is a pleasure. The airplane's ailerons delight and surprise you with their nimbleness, causing you to forget you are flying a 10,000-pound airplane designed as a corporate barge. The Model 18 is solid and stately, without being too stodgy. The large cockpit windows make it easy to see out of the Beech, even while taxiing nose-high on the ground. You sit in line with the pol- ished 95-inch Hartzell props, which makes visibility to the sides quite good. But the price for this view is noise; active noise-canceling head- sets are a must for this old girl if you want to have any hearing in your old age. With oil cooler shutters, carburetor air controls, and cowl flaps all bristling from the center console, the airplane needs to be monitored and managed procedurally; this is not an airplane in which to "kick the tires, light the fires, and show me the go handles." The nature of the big Pratts requires addi- tional attention, and a checklist goes a long way. Although the airplane has a bit of a reputation for ground looping, it's undeserved if you just give it the attention that any taildragger deserves-and get the tailwheel locked before takeoff and landing. I never did get to land the airplane- Warren isn't comfortable with the idea AOPA PILOT· 84. JULY 1999