AOPA PILOT • SEPTEMBER 2003
Beechcraft 76 Duchess · Avionics Manual
Overview
This document serves as an avionics manual for the Beechcraft 76 Duchess, detailing its performance, specifications, and operational characteristics. It is intended for pilots and aviation enthusiasts, providing insights into the aircraft's capabilities, training features, and maintenance considerations. The Duchess is recognized for its speed, climb performance, and suitability for training, making it a popular choice among flight schools. The manual includes critical information on engine performance, weight limits, and operational procedures, ensuring that pilots are well-informed about the aircraft's systems and handling characteristics.
- Cruise speed of 166 KTAS at 6,000 feet with 23 GPH fuel consumption.
- Maximum gross weight of 3,900 lbs and useful load of 1,470 lbs.
- Service ceiling of 19,650 feet and climb rate of 1,248 fpm at sea level.
- Two Lycoming O-360 engines, each producing 180 hp.
- Maximum demonstrated crosswind component of 25 knots.
Document
Source
Originally published by www.aeroresourcesinc.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Avionics Manual
- Year
- 2003
- Pages
- 6
- File size
- 5.0 MB
- Publisher
- www.aeroresourcesinc.com
Common. Rarer than 24% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Beechcraft 76 Duchess.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
Free — save the 76 DUCHESS to your watchlist and track it in one place.
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In this document
Performance Specifications
The Beechcraft 76 Duchess is powered by two Lycoming O-360-A1G6D engines, each producing 180 horsepower at 2,700 RPM. It has a maximum level speed of 152 knots at sea level and a cruise speed of 166 knots true airspeed at 6,000 feet with a fuel consumption of 23 gallons per hour. The service ceiling is 19,650 feet, and the aircraft can climb at a rate of 1,248 feet per minute at sea level.
Weight and Balance
The maximum gross weight of the Duchess is 3,900 pounds, with a standard empty weight of 2,446 pounds. This gives a maximum useful load of 1,470 pounds. The aircraft has a fuel capacity of 103 gallons, with 100 gallons usable, allowing for significant payload capabilities.
Operational Characteristics
The Duchess is designed for training and rental, featuring two doors for easy access and excellent visibility. It has a maximum demonstrated crosswind component of 25 knots and requires careful handling due to its effective elevator and fast electric trim system. The aircraft is forgiving in single-engine emergencies, making it suitable for less experienced pilots.
Safety and Maintenance
The Duchess has a strong safety record with few fatalities. Maintenance costs include annual inspections averaging $2,200 and 100-hour inspections at $1,650. The aircraft's design includes features like counter-rotating props to eliminate critical engine issues.
Training Features
The Duchess is often used for ATP training and refresher courses. It is equipped with modern avionics, including a radar altimeter and GPS systems, making it suitable for various training scenarios. The aircraft's design allows for effective training in engine-out procedures and other critical flight maneuvers.
Safety notes
- The Duchess is forgiving in single-engine emergencies.
- Careful handling is required due to effective elevator control.
Full document text
hoped was the good engine. And there I sat, in control but unsure of all those other little things a multiengine pilot should do, like making a decision about whether to feather the bad engine once it is identified. So Wentz did it several times more during the flight that had originated from Cleveland's Burke Lake- front Airport. Even the takeoff was an emergency, as Wentz pulled an engine shortly after I brought the power up and was concen- trating hard on maintaining the center- AOPA PILar· 86 • SEPTEMBER 2003 line as the aircraft began to yaw. This was my second flight for refresher train- ing-yes, the first was easier. This time I was getting something called the Wentz Workout, and that's not a complaint. Wentz is a former aerospace engineer who worked on unmanned missiles de- signed to knock out enemy radar, but he likes flight instructing better. The Duchess is operated by AirSports Aviation and is available not only for training but also for rental to students with as little as 200 hours of total time, The Duchess has a high T-tall (right) that can create an abrupt takeoff for the pilot unfamiliar with its characteristics. The landing gear design (left) softens and absorbs much of the shock of landing. an instrument rating, and 20 hours logged in multiengine aircraft. Primarily its role is as a trainer, allowing the rapidly growing AirSports school to add ATP training to its courses. If you're in a bit of a rush at this point and need to know the bottom line on the Duchess, here it is. The Duchess is fast (160 knots true airspeed [KTAS] at 24 inches of manifold pressure and 2,400 rpm), almost sporty in climb perfor- mance (1,500 fpm on this 18-degree Fahrenheit day last winter), economical (two 180-horsepower engines drink 18 gallons total an hour), and is capable of hauling a reasonable load. With myself (200 pounds) and Wentz (175 pounds) aboard and full fuel of I 00 usable gallons, we each could have taken a Ill-pound suitcase. Not that we would. And it is a safe airplane that will treat the rusty mul- tiengine pilot well, as I learned during several engine-out drills and a minimum controllable airspeed demonstration. (Test pilots demonstrated spin recovery, but Beechcraft decided not to certify it for intentional spins. Multiengine aircraft are not required to demonstrate spin re- covery; many multi engine aircraft, in- cluding the Piper Seminole, have not been spin tested.) According to Vref, AOPA'saircraft valuation service (www. aopa.org/members/vreO, there are 272 Duchess aircraft still flying out of only 437 built. That's bad news because it means they are hard to find and the price is higher because of market demand. The dollars and cents The Duchess at AirSports is leased from owner Blair Martin, a Cleveland-area Duchess owner Blair Martin (left) and Charlie Wentz go for a training flight from Cleveland's Burke Lakefront Airport. The panel Includes a radar altimeter (below). pharmacist who is also a patron of the Rock and Roll Hall of Fame and Muse- um, only a few hundred yards from Burke Lakefront Airport. More about that later. The aircraft had only 1,250 hours total time on the 1982 airframe when he bought it last year: He paid $190,000, or about the same price as when it was new in 1982. (Older models can be found ranging in price from $84,000 to $106,000.) It has had only three owners and was never used for flight instruction. To be honest, Mar- tin had his eye on a new $430,000 Piper Seminole at the time of the Duchess purchase, but he and his partners were frustrated by bankers. "If you don't need the money, they'll give it to you," Martin quipped. Martin bought the aircraft in Min- nesota and took it to Air Camis at Akron- Canton Regional Airport in Ohio for AOPA PILOT· 87 . SEPTEMBER 2003 some freshening. He added a new all- leather interior for $6,900, and installed a Garmin 430 GPS/com ($7,968) and a Garmin 340 audio panel, and several other items such as push-to-talk switch- es (totaling $1,562). (Leather seats were installed at AvCraft Completions in Tyler, Texas.) He had the props over- hauled for $5,112 and did some battery work to cure charging problems for $553. The airplane has its original paint, which is in excellent condition. An an- nual inspection costs about $2,200, while 100-hour inspections are $1,650. Martin said the aircraft must be rent- ed at least 50 hours a month to break even on fuel, oil, the $50 tiedown fee, insurance, engine overhaul, and the monthly loan payment. It rents for $205 an hour to pilots who belong to the school's flying club. Martin's Duchess was a factory de- monstrator from 1982 to 1984. Perhaps that is why it has a radar altimeter: I meant to watch it count off the final 1,000 feet, but somehow found myself too busy with the landings to take a glance. Wentz insists that all landings be nose high-no flat ones allowed. When I did it perfectly once Wentz withdrew a handkerchief from his pocket and-dab- bing his eyes-insisted that he was weep- ing from the sheer beauty of my effort. A great place to train With all those Wentz Workouts, it was nice to have interesting attractions The paint job on the Duchess Is original and looks terrific despite its 21 years. No stranger to the spotlight, it bears the Beech 50th anniversary seal. AOPA PILOT· 88. SEPTEMBER 2003 within walking distance where I could take a break. Martin's status at the Rock and Roll Hall of Fame led to a behind- the-scenes tour of the pyramid like glass structure, not that we had to leave the airport to see an interesting museum. The International Women's Air & Space Museum is located in the Burke Lake- front Airport terminal building. It in- cludes animated exhibits throughout the building, along with a reference li- brary and gift shop in a central office. Especially interesting is a wall of the ter-
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minal where all female astronauts are pictured-both American and Russian: There are 41 photos. The first two in his- tory were Russian. New York City tried mightily to be- come the location for the Rock and Roll Hall of Fame, but the people of Cleve- land wanted it more. Plus, Cleveland has a historical connection to the genre: Cleveland-born radio, television, and movie personality Alan Freed, on his first show on July 11, 1951, refused to use the more common "rhythm and blues" moniker, renaming the music "rock and roll." He died in 1965, his ca- reer in tatters after he fell victim to the payola scandal involving payments to disc jockeys by record companies to feature their artists. Interactive exhibits ---- in the museum allow visitors to hear virtually any song recorded by any major group or artist: I looked up Learning to Fly by Pink Floyd. Or you can read Bob Dylan's thoughts: "Hear- Hits and Misses Hits • Good performer on one engine. • Good payload with full fuel. • Excellent cruise speed of 160 KTAS. • Can climb rapidly. • Prime is done by pushing magneto switch. No manual priming required. • Very forgiving in single-engine emergenc ies. • Large baggage door. • Avionics are divided between two bus bars and two alternators, so if one fails you don't lose both radios. Misses • Electric trim is very fast and can result in overtrimming. • Elevator is very effective and pitch control requires a delicate touch. • Gear can be lowered at 140 KIAS, but can't be raised again until air- speed is 112 KIAS or less. • Nose can't be seen by the pilot, and therefore can't be used as a visual cue during flight. • Doesn't like to slow down and de- scend. Takes some practice to fly it well. • There aren't that many available on the market. • Not much legroom for the rear- seat passengers. -~~~------- ----~-.-- ing Elvis Presley for the first time was like busting out of jail." Later Wentz and I stopped by the Crawford Auto-Aviation Museum oper- ated by the Western Reserve Historical Society at 1082S East Boulevard, next to the campus of Case Western Reserve University. The museum, a IS-minute drive from Burke Lakefront Airport, fea- tures antique autos and several interest- ing aircraft. A trainer from the start Once the side trips were over, it was back to work for another refresher training flight in the Duchess. Wentz teaches ground schools to make up for times when Cleveland-area winters don't sup- port flying. Last winter was especially se- vere. Consequently, Wentz knows systems and multi engine procedures well, as might be expected of any pilot who is also an instructor, ground school teacher, and examiner. He teaches students not to think until they are about 10 steps into any engine-out reaction: Move mixtures, props, and throttles forward; bring gear up; bring flaps up (or flaps up prior to gear if going around on one engine); turn fuel pumps on; move the fuel selector to an- other tank if applicable; identify the dead engine and verify it. Then think. "That's the first time I want to think," said Wentz. Thinking includes deciding whether there is time to troubleshoot, and if not, feath- ering the failed engine and following the engine shutdown checklist. The coun- terrotating props on the Duchess mean there is no critical engine. The Duchess was designed for training and rent- al at Beech Aero Clubs, and many of its special de- sign features make it good for per- sonal travel as well. There are two doors so Wentz and I could enter at the same time and quickly close up the cabin-impor- tant in frigid temperatures. Visibility is greenhouselike, a much appreciated trait given the training environment and the congested airspace around Burke Lakefront, which sits partially on a land- fill next to Lake Erie and the city skyline. The airport was once threatened by clo- sure, but airport officials said city offi- cials now appreciate its role in the local economy and have approved future de- velopment plans. (See "AOPA Action: Fresh Burke Lakefront Bashing Raises Red Flag," July 2002 Pilot.) Celebrities such as football coach Don Shula, actor and director Rob Reiner, singer LeAnn Rimes, then-presidential candidate George W. Bush, former President Bill Clinton (since leaving office), and Oprah Winfrey use it. This year Fleet- The Crawford Museum (left) is a few blocks from the Burke Lakefront Airport, while the Rock and Roll Hall of Fame (below) Is only a few hundred yards away. wood Mac and Elton John used the air- port. It is also favored by visiting basket- ball, hockey, and baseball teams. Even the Ohio governor lands there. The greenhouse visibility has its drawbacks, however. Pilots can't see the nose, so it is impossible to use single- engine tricks like putting the nose on the horizon for the approximate correct climb attitude and speed. In fact, in level cruise the correct Duchess attitude ap- pears to the pilot to be nose down, and it takes some training time before the feel- ing goes away. I found the electric trim to be lightning fast, so fast in fact that on, the first flight I was always over- or un- . dertrimming. By the second flight I had learned to blip the trim switch momen- tarily for finer adjustments. Trim aside, the powerful elevator up there on the T- AOPA PILOT. 89 •SEPTEMBER 2003 SPECSHEET Beechcraft Duchess 76 Price as new: $197,281 Price as tested: $190,000 Single-engine ROC, sea level 230 fpm Max level speed. sea level 152 kt Cruise speed/range w/45-min rsv. (fuel consumption) @ 24 in and 2,400 rpm. best power mixture, 6,000 feet . ........................................ 166 KTAS/600 nm (23 gph) Service ceiling 19,650 ft Single-engine service ceiling 6,170 ft Landing distance over 5().ft obstacle 1.881 ft Landing distance. ground roll 1.000 ft Specifications Powerplants Two Lycoming 0-360-A1G6D. 180 hp @ 2.700 rpm Recommended TBO 2.000 hr (2,200 hr if flown at least 40 hr per month) Propellers Hartzell two-blade, full-feathering. constant-speed. 76-in dia Length 29 ft 5 in Height 9 ft 6 in Wingspan 38 ft Wing area 181 sq ft Wing loading 21.5 Ib/sq ft Power loading 10.8 Ib/hp Seats .4 Cabin length 7 ft 11 in Cabin width 3 ft 8 in Cabin height .4 ft Standard empty weight 2,446 Ib Empty weight. as tested 2.703 Ib Max ramp weight 3.916 Ib Max gross weight 3.900 Ib Max usefulload l,470 Ib Max useful load. as tested 1.197 Ib Max payload w/full fuel 870 Ib Max payload w/full fuel. as tested 597 Ib Max takeoff weight 3.900 Ib Max landing weight 3.900 Ib Fuel capacity. std . .............................. 103 gal (100 gal usable) 618 Ib (600 Ib usable) Baggage capacity 200 Ib, 19.5 cu ft Performance Takeoff distance. ground roll 1.017 ft Takeoff distance over 5().ft obstacle 2.119 ft Accelerate-stop distance 2,450 ft Accelerate-go distance @ 3.600 Ib 6.200 ft Max demonstrated crosswind component . ...................................................... 25 kt Rate of climb. sea level 1.248 fpm Limiting and Recommended Airspeeds VR (rotation) 71 KIAS Vx (best angle of climb) 71 KIAS Vy (best rate of climb) 85 KIAS VXSE (best single-engine angle of climb) . .................................................. 85 KIAS VYSE (best single-engine rate of climb) . .................................................. 85 KIAS VMC (min control w/one engine inoperative) .................................................... 65 KIAS VSSE (min intentional one-engine operation) .................................................. 85 KIAS VA (design maneuvering) 132 KIAS VFE (max flap extended) 110 KIAS VLE (max gear extended) 140 KIAS VLO (max gear operating) Extend 140 KIAS Retract 112 KIAS VNO (max structural cruising) 154 KIAS VNE (never exceed) 194 KIAS VS1(stall. clean) 70 KIAS Vso (stall, in landing configuration) 60 KIAS All specifications are based on manufactur- er's calculations. All performance figures are based on standard day, standard atmosphere. sea level. gross weight conditions unless oth- erwise noted. flight, but it was strengthened as re- quired by an AD and was improved on subsequent aircraft. Overall the aircraft has an excellent safety record with few fatalities. Whether it's initial training, refresher training, or ATP training, you'll enjoy the experience. After a day of engine-outs, the crew at AirSports recommends you celebrate at Johnny's, a steak restaurant on Cleveland's West Sixth Street. You can trust the recommendation because they know how to treat their customers. They get a lot of practice. After all, they have royalty in their midst, the Duchess of Cleveland. /!CR •.'. tail at first gave me fits: Setting the de- scent on the attitude indicator to a bar width down, the aircraft tended to de- scend at 1,000 fpm. But one should hardly complain that the elevator is too effective; it's much better than if it were ineffective. The Duchess 76, so named because it first flew in 1976 (but wasn't delivered to the first customer until 1978), needed few modifications after the design was certified. Over its four-year production run there were improvements to door locks, cowl flap hinges, engine mounts, and in 1981 a muting system for the landing-gear warning horn. The warn- ing horn comes on whenever the air- plane configuration suggests a gear-up landing-annoying when teaching stalls and slow flight. Its airworthiness direc- tives over the years have been relatively minor and affected the main landing gear, flight controls, and the electrical system. The fleet was grounded briefly in 1978 when a trim pushrod failed in AOPA PILOT' 90 •SEPTEMBER 2003 i Links to more information about the Beechcraft Duchess may be found on AOPA Online (www. aopa.org/ pilot! links.shtml). Keyword search: Duchess. E-mail the author at alton.marsh@ aopa.org


