Beechcraft Duchess 76 Technical specifications

'Deechcraft®
Pilot's Operating Handbook
and
FAA Approved Airplane
Flight Manual
FAA Approved in the Normal Category based on FAR 23, This doc-
ument must be carried
in the airplane at all times and be kept within
reach of the pilot during all flight operations. .
This handbook includes the material required to be furnished to the
pilot by FAR 23.
... ""~ ...
. ~. Jackson
Beech Aircraft Corporation
DOA CE-2
Airplane Serial Number:
Airplane Registration Number:
FAA Approved:.
:> ~/]. If':'
COPYRIGHT ©BEECH 1994
PIN 105-590000-5
Issued: January, 1978 PIN 105-590000-5A9
Revised: July, 1994

DUCHESS 76
PILOT'S OPERATING HANDBOOK
AND
FAA APPROVED AIRPLANE FLIGHT MANUAL
A8 Revision October, 1990
LOG OF REVISIONS
Page Description
Title Page Updated
Page A
(A8)
New
10-1 thru Revised Section
X,
10-68 Safety Information (October, 1990)
A8
PAGE A

BEECHCRAFT
Duchess 76
INTRODUCTION
The format and contents of this Pilot's Operating Handbook
and FAA Approved Airplane Flight Manual conform to GAMA
(General Aviation Manufacturers Association) Handbook
Specification Number 1. Use of this specification by all manu-
facturers will provide the pilot with the same type of data in
the same place in all handbooks.
Attention is called to Section X(SAFETY INFORMATION). I
BEECHCRAFT feels that it is very important to have Safety
Information in acondensed form in the hands of the pilots.
The Safety Information should be read and studied. Periodic
review will serve as areminder of good piloting techniques.
WARNING
Use only genuine BEECHCRAFT or
BEECHCRAFT approved parts obtained from
BEECHCRAFT approved sources, in connection
with the maintenance and repair of Beech
airplanes.
Genuine BEECHCRAFT parts are produced and
inspected under rigorous procedures to insure
airworthiness and suitability for use in Beech
airplane applications. Parts purchased from
sources other than BEECHCRAFT, even though
outwardly identical in appearance, may not have
had the required tests and inspections
performed, may be different in fabrication
September, 1983
a

b
eeeCHCRAFT
Duchess 76
techniques and materials, and may be
dangerous when installed in
an airplane.
Salvaged airplane parts, reworked parts
obtai ned from non-BEECHCRAFT approved
sources, or parts, components,
or structural
assemblies, the service history
of which is
unknown or cannot be authenticated, may have
been subjected to unacceptable stresses or
temperatures or have other hidden damage, not
discernible through routine visual or usual
nondestructive testing techniques. This
may
render the part, component or structural
assembly, even though originally manufactured
by BEECHCRAFT, unsuitable
and unsafe for
airplane
use.
B EECHCRAFT expressly disclaims any
responsibility for malfunctions, failures, damage
or injury caused by use of non-BEECHCRAFT
approved parts.
September, 1983

DUCHESS 76
PILOT'S OPERATING HANDBOOK
AND
FAA APPROVED AIRPLANE FLIGHT MANUAL
TABLE OF DIVISIONS
SECTION IGENERAL
SECTION
II LIMITATIONS
SECTION
III EMERGENCY PROCEDURES
SECTION
IV NORMAL PROCEDURES
SECTION VPERFORMANCE
SECTION
VI WEIGHT AND BALANCE/
EQUIPMENT LIST
SECTION Vii SYSTEMS DESCRIPTION
SECTION VIII HANDLING, SERVICING
AND MAINTENANCE
SECTION
IX SUPPLEMENTS
SECTION XSAFETY INFORMATION
September, 1983 e

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BEECHCRAFT
Duchess
76
SECTION I
GENERAL
TABLE OF CONTENTS
SUBJECT PAGE
Important Notice '" 1-3
Use of the Handbook 1-4
Revising the Handbook 1-6
Airplane Flight Manual Supplements
Revision Record 1-6A
Vendor-Issued STC Supplements 1-6A
Airplane Three View _1-7
Ground Turning Clearance 1-8
DESCRIPTIVE DATA 1-9
Engines 1-9
Propellers 1-9
Fuel 1-10
Oil. 1-10
Maximum Certificated Weights 1-10
Standard Airplane Weights 1-11
Cabin and Entry Dimensions 1-11
Baggage Space and Entry Dimensions 1-11
Specific Loadings 1-11
SYMBOLS, ABBREVIATIONS, AND TERMINOLOGY 1-11
Airspeed Terminology 1-12
Meteorological Terminology 1-14
Power Terminology 1-15
Engine Controls and Instruments Terminology 1-16
Airplane Performance and Flight
Planning Terminology 1-17
Weight and Balance Terminology 1-18
September, 1983
1-1

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BEECHCRAFT
Duchess 76
THANK YOU . ..
Section I
General
for displaying confidence in us by selecting aBEECHCRAFT
airplane. Our design engineers, assemblers, and inspectors
have utilized their skills and years of experience to ensure
that the new BEECHCRAFT meets the high standards of
quality and performance for which BEECHCRAFT airplanes
have become.famous throughout the world.
IMPORTANT NOTICE
This handbook should be read carefully bythe owner and the
operator in order to become familiar with the operation of the
airplane. Suggestions and recommendations have been
made within it to aid in obtaining maximum performance
without sacrificing economy. Be familiar with, and operate the
airplane in accordance with, the Pilot's Operating Handbook
and FAA Approved Airplane Flight Manual, and/or placards
which are located in the airplane.
As afurther reminder, the owner and the operator should
also be familiar with the Federal Aviation Regulations appli-
cable to the operation and maintenance of the airplane, and
FAR Part 91, General Operating and Flight Rules. Further,
the airplane must be operated and maintained in accordance
with FAA Airworthiness Directives which may be issued
against it.
The Federal Aviation RegUlations place the responsibility for
the maintenance of this airplane on the owner and the
operator, who should ensure that all maintenance is doneby
qualified mechanics in conformity with all airworthiness re-
quirements established for this airplane.
All limits, procedures, safety practices, time limits, servicing,
and maintenance requirements contained in this handbook
April 1979
1-3

section I
General BEECHCRAFT Duchess76
are considered mandatory for continued airworthiness to
maintain the airplane in acondition equal to that of its original
manufacture.
Authorized BEECHCRAFT Aero or Aviation Centers or
International Distributors or Dealers can provide
recommended modification, service, and operating
procedures issued by both the FAA and Beech Aircraft
Corporation, which are designed to get maximum utility and
safety from the airplane.
USE OF THE HANDBOOK
The Pilot's Operating Handbook is designed to facilitate
maintaining the documents necessary for the safe and effi-
cient operation of the airplane. The handbook has been
prepared in loose leaf form for ease in maintenance and in a
.convenient size for storage. The handbook has been ar-
ranged with quick reference tabs imprinted with the title of
each section and contains ten basic divisions.
I
/
}
1-4
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Section 10
General
Limitations
Emergency Procedures
Normal Procedures
Performance
Weight and Balance/Equipment List
Systems Description
Handling, Servicing, and Maintenance
Supplements
Safety Information
August, 1980

BEECHCRAFT
Duchess 76
NOTE
Section I
General
The owner/operator should always refer to all
supplements, whether STC Supplements or
Beech Supplements, for possible placards,
limitations, normal, emergency and other
operational procedures for proper operation of
the airplane with optional equipment installed.
The following information maybe provided to the
holder of this manual automatically:
1. Original issues and revisions of Class Iand
Class II Service Instructions
2. Original issues and revisions of FAA
Approved Airplane Flight Manual Supplements
3. Reissues and revisions of FAA Approved
Airplane Flight Manuals, Flight Handbooks,
Owner's Manuals, Pilot's Operating Manuals,
and Pilot's Operating Handbooks
This service is free and will be provided only to
airplane owners who are listed on the FAA
Aircraft Registration Branch List or the
BEECHCRAFT International Owners Notification
Service List, and then only if listed by airplane
serial number for the model for which this
handbook is applicable. For detailed information
on how to obtain "Revision Service" applicable
to this handbook or other BEECHCRAFT
Service Publications consult any BEECHCRAFT
Aero or Aviation Center, International Distributor,
or International Dealer, or refer to the latest
revision of BEECHCRAFT Service Instructions
No. 0250-010.
September, 1983 1-5

Section I
General
BEECH CRAFT
Duchess76
Due to the large variety of airplane configura-
tions available through optional
equipment, it
should
be noted that where information pertain-
ing to optional equipment appears in the hand-
book, the optional equipmentwill not normally
be
designated as such. Due to custom design varia-
tions, the illustrations in this handbookwill not
be
typical of every airplane.
Beech Aircraft Corporation expressly reserves
the right to supersede, cancel, and/or declare
obsolete, without prior notice,
any part, part
number, kit, or publication that may be refer-
enced in this handbook.
REVISING THE HANDBOOK
Immediately following the Title Page is the "Log of Revi-
sions" page(s). The Log
of Revisions pages are used for
maintaining alisting of all effective pages in the handbook
(except the SUPPLEMENTS section), and
as arecord of
revisions to these pages. In the lower right corner of the
outlined portion is abox containing acapital letter which
denotes the issue or reissue of
the handbook. It will be
advanced one letter, alphabetically, per reissue. This letter
will
be suffixed by anumber whenever the handbook is
revised. When arevision to the handbook is made, anew
Log of Revisions will be issued.
All Logs of Revisions must be
retained in the handbook to pro,vide acomplete record of
material status until areissue is made.
,)
1-6
September, 1983

BEECHCRAFT
Duchess 76
WARNING
Section I
General
When this handbook is used for airplane opera-
tional purposes it is the pilot's responsibility to
maintain it in current status.
AIRPLANE FLIGHT MANUAL SUPPLEMENTS
REVISION RECORD
Section IX contains the FAA Approved Airplane Flight Man-
ual Supplements headed by aLog of Supplements page. On
the "Log" page is alisting of the FAA Approved Supplemen-
tal Equipment available for installation on the airplane. When
new supplements are received or existing supplements are
revised, anew "Log" page will replace the previous one,
since it contains alisting of all previous approvals, plus the
new approval. The supplemental material will be added to the
grouping in accordance with the descriptive listing.
NOTE
Upon receipt of anew or revised supplement,
compare the "Log" page just received with the
existing "Log" page in the manual. Retain the
"Log" page with the latest date on the bottom of
the page and discard the other log.
VENDOR-ISSUED STC SUPPLEMENTS
When a new airplane is delivered from the factory, the
handbook delivered with it contains either an STC
(Supplemental Type Certificate) Supplement or aBeech
Flight Manual Supplement for every installed item requiring a
supplement. If anew handbook for operation of the airplane
is obtained at alater date, it is the responsibility of the
owner/operator to ensure that all required STC Supplements
(as well as weight and balance and other pertinent data) are
transferred into the new handbook.
September, 1983 1·6A

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BEECHCRAFT
Duchess 76 section I
General
o
o
o
o
r
._------,
WING AREA: 181 SQ. FT.
I ,,I .--------,
~12:6"-J
76" DIA.
=
~
=>
76-607·4
OJ
I
38' 29'5" Ci=--- ~T
III
9'6"
THREE-VIEW
January 1978
1-7

Section I
General BEECHCRAFT
Duchess 76
®
76-604·2
GROUND TURNING CLEARANCE
®Radius for Wing Tip 27feet 2inches
@Radiusfor Nose Wheel 9feet 10 inches
©Radiusfor Inside Gear 3feet 1inch
@Radiusfor Outside Gear 13 feet 8inches
TURNING RADII ARE PREDICATED ON THE USE OF PARTIAL
BRAKING
ACTION AND DIFFERENTIAL POWER.
)
1-8
January 1978

BEECHCRAFT
Duchess 76
DESCRIPTIVE DATA
ENGINES
section I
General
Two Avco Lycoming engines are installed; one 0-360-
A1 G6D (clockwise rotating) located on the left wing, and one
LO-360-A1G6D (counterclockwise rotating) located on the
right wing. The engines are four-cylinder, direct-drive. hori-
zontally opposed, and each rated at 180 horsepower
at 2700
rpm.
Take-off and Maximum
Continuous Power . . . . . Full throttle, 2700rpm
Recommended Maximum
Cruise
Power. . . . . . . . . . . 24 in. Hg, 2700 rpm
PROPELLERS
The airplane
is equipped with two Hartzell, constant-speed,
full-feathering, two-blade propellers: the left engine (clock-
wise rotating) has an HC-M2YR-2CEUF hub with FC 7666A
blades and aC2285-3P spinner; the right engine (coun-
terclockwise rotating) incorporates an HC-M2YR-2CLEUF
hub with FJC 7666A blades and aC2285-3LP spinner.
Pitch settings
at the 30 inch station: Low, 12.1° :!: .1°;
High,
1r to 20°; Feathered, 81° + 1°,
Diameter is 76 inches, with cut-off permitted to 74.0 inches.
January 1978
1-9

Section I
General
FUEL
BEECHCRAFT
Duchess 76
Aviation Gasoline, grade 100 (green) or grade 100LL (blue).
Total Capacity
Total Usable .
OIL
103 gallons
100gallons
I
Engine oils must meet Avco Lycoming Specification No.
I
301 Fand be used in accordance with Avco Lycoming
Service Instructions
No. 1014J or subsequent revisions.
Refer to HANDLING, SERVICING,
AND MAINTENANCE
section for alist of oils meeting this specification.
Average
Ambient MIL-L-6082 MIL-L-22851
Air Temperature Grades
Ashless Dispersant
Grades
Above 60 FSAE 50 SAE 40 or SAE 50
300to 90°F SAE 40 SAE 40
o0SAE 30 SAE 40, SAE
30
oto 70 F
or SAE 20W40
0SAE 20
SAE 30 or SAE 20W30
Below 10 F
Oil Capacity 8quarts each engine
MAXIMUM CERTIFICATED WEIGHTS
)
MaximumHampWeight .
Maximum Take-off Weight
Maximum Landing Weight
Maximum Zero Fuel Weight
Maximum Weight in Baggage Compartment
39161bs
3900lbs
3900lbs
3500lbs
. 200lbs
1-10 September, 1983