Comco Ikarus C42 B Owner's manual

PILOT OPERATING HANDBOOK
for the aircrafts IKARUS C42 B according to
building standard LTF-UL-2019 from 15 January 2019
Modell No. C42 B
German Ident-No. 66141.1 (Issue 1)
Type IKARUS C42B with
reference to the TB-42-024-2020
Aircraft Serial-No. ________-________
Issue: 1
Date of issue: 25.06.2021
This handbook is to be kept in the aircraft at all times.
The described options are certified for Germany and have been tested in
Germany.
Please note:
Different regulations apply in different countries for the use of the C42 series
as a tow plane for gliders, for banner towing or to drop skydivers. Please check
with the authorities responsible for your country.

POH LTF-UL-2019 C42B Issue 1 Page 2 of 84
RECORD OF MANUAL REVISIONS
No. Issue
No.
Description of changes Date Sign
1 1 - C42B according to
LTF-UL-2019
MTOW: 540 kg
25.06.2021 H. Lieb
2
3
4
5
6
7
8
9
10

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Manufacturer Contact Information
COMCO IKARUS GmbH
Am Flugplatz 11
88367 Hohentengen
Germany
Tel: [phone]
Fax: [phone]
Email: post@comco–ikarus.de
Owner 1. ____________________________________________
2. ____________________________________________
3. ____________________________________________
4. ____________________________________________
This Pilot Operating Handbook belongs to the aircraft with
Serial-No. ________-________ and is to be kept in the aircraft at all times.

POH LTF-UL-2019 C42B Issue 1 • Pilot Operating Handbook
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Introduction
C42 series aircraft are built in compliance with the airworthiness
requirements of various countries and are certified as Microlight, Ultralight,
Advanced Ultralight and Light Sport Aircraft.
To operate the aircraft the pilot must hold a license or certificate appropriate
to this category of aircraft. The aircraft is not to be flown unless it is
registered, carries registration markings in accordance with the
requirements of the country in which the aircraft is to be flown, and has a
Permit to Fly or certificate of Airworthiness valid in the country of operation.
The aircraft is to be flown under daytime VFR conditions. Flights in other
conditions than daytime VFR without the correct aircraft equipment and pilot
ratings is extremely dangerous and can result in serious injury or death.
Pilots holding licences for other categories, even higher ones, are required
to be checked out by an appropriately qualified instructor prior to flying this
aircraft as it possesses characteristics that are unique to light sport type
aircraft. These characteristics include low inertia, susceptibility to turbulence
and wind gradient and special engine considerations.
The safety of all occupants, the aircraft and persons on the ground are the
sole responsibility of the Pilot in command. Do not operate this aircraft in a
manner that would endanger the occupants, the aircraft or persons on the
ground.

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UL engines are not certified aircraft engines, the flight path must always be
selected so that a landing is safely possible in the event of engine failure.
Changes to the control system, structure,
wings and engine are prohibited.
These changes would invalidate any certificate of airworthiness or permit to
fly and as such would result in an insurance becoming null and void.
All operating difficulties and equipment failures should be reported to your
dealer or the manufacturer.
For fire safety reasons, smoking is prohibited on board of the aircraft.
All values given in this manual refer to the
MTOW and all speeds given are Indicated Air Speeds (IAS).

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Three-sided views
IKARUS C42B
Figure 1: 3-side view C42B

POH LTF-UL-2019 C42B Issue 1 • Pilot Operating Handbook
Table of contents
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Title page ....................................................................................................... -
Record of Manual Revisions ........................................................................ 2
Manufacturer Contact Information ................................................................ 3
Introductory .................................................................................................. 4
Three-sided views ........................................................................................ 6
Table of contents .......................................................................................... 8
1 Operating limitations .......................................................................... 10
1.1 Airspeeds .................................................................................. 10
1.2 Weights ..................................................................................... 10
1.3 Structural limitations.................................................................. 11
1.4 Center of gravity limits .............................................................. 11
1.5 Airspeed markings .................................................................... 11
1.6 Engine rpm limitations .............................................................. 12
1.7 Rpm indicator markings ............................................................ 12
1.8 Flap settings .............................................................................. 12
1.9 Propellers for ROTAX 912 UL .................................................. 12
1.10 Propellers for ROTAX 912 ULS ................................................ 13
1.11 Engine limitations ROTAX 912 UL / ULS ................................. 14
2 Operating limitations .......................................................................... 15
3 Dimensions .......................................................................................... 15
4 Minimum equipment ........................................................................... 15
5 Approved equipment .......................................................................... 16
6 Data plate & manufacturer`s information plate ................................ 17
7 Weight and balance ............................................................................ 18
7.1 Weighing ................................................................................... 18
7.2 Loading plan ............................................................................. 19
8 Ground handling ................................................................................. 20
8.1 Shunting .................................................................................... 20
8.2 Hanging-up ............................................................................... 20

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8.3 Parking ...................................................................................... 21
8.4 Tie-Down ................................................................................... 21
9 Operation of the engine ...................................................................... 23
9.1 General information .................................................................. 23
9.2 Equipment with radiator flap ..................................................... 24
9.3 Notes for using the LiFe-starter battery .................................... 25
10 Flight performances ............................................................................ 27
10.1 Take-off distance ...................................................................... 27
10.2 Take-off speed .......................................................................... 27
10.3 Rate of climb ............................................................................. 27
10.4 Cruising speed .......................................................................... 28
10.5 Engine off performance ............................................................ 28
11 Pre-flight inspection ........................................................................... 29
11.1 Engine ....................................................................................... 29
11.2 Landing gear ............................................................................. 29
11.3 Left wing .................................................................................... 30
11.4 Left side of fuselage .................................................................. 30
11.5 Empennage ............................................................................... 31
11.6 Right side of fuselage ............................................................... 31
11.7 Right wing ................................................................................. 31
11.8 Cabin, inside and outside ......................................................... 32
11.9 Instruments ............................................................................... 32
11.10 Drainage ................................................................................... 32
11.11 Safety clip draintap ................................................................... 33
12 “Before take-off” checklist ................................................................. 34
13 Flight Operations ................................................................................ 35
13.1 Taxiing ...................................................................................... 35
13.2 Take-off and climb .................................................................... 35
13.3 Cruising flight ............................................................................ 37
13.4 Turning flight ............................................................................. 37
13.5 Stalls ......................................................................................... 38
13.6 Descent and landing ................................................................. 39
13.7 Shutting down the engine ......................................................... 39
13.8 Sudden loss of engine power ................................................... 40
13.9 Emergency procedures ............................................................. 41
13.10 Use of the built-in parachute rescue system ............................ 43

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14 Attaching the wings ............................................................................ 45
14.1 Attaching the wings to the fuselage .......................................... 45
14.2 Folding the wings for hangaring ................................................ 47
15 Rigging data ........................................................................................ 48
16 Information for ultralights with towing device ................................. 52
16.1 Glider towing ............................................................................. 52
16.2 Banner tow ................................................................................ 59
16.3 Inspection and maintenance intervals ...................................... 65
17 Features of the aircraft equipped for handicapped pilots .............. 66
18 Additional instructions for dropping skydivers ............................... 68
19 Flying the aircraft with removed doors ............................................. 70
20 Care and maintenance ........................................................................ 71
21 COMCO IKARUS Manufacturer Warranty ......................................... 73
22 Appendix .............................................................................................. 77
22.1 Placards .................................................................................... 77
22.2 Reporting form .......................................................................... 78
22.3 Inspections performed .............................................................. 79
22.4 Location of the parachute rescue system ................................. 80
22.5 Cirquit diagram C42 Series ....................................................... 83
23 List of illustrations .............................................................................. 84
24 List of tables ........................................................................................ 84

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1 Operating limitations
1.1 Airspeeds
All speeds are Indicated Air Speeds (IAS).
Stall speeds
Flaps 0: .............................................................. VS1 = 43 kn / 80 km/h
Flaps 1: ................................................................ VS = 41 kn / 75 km/h
Flaps 2: .............................................................. VS0 = 38 kn / 70 km/h
Speed for best climbing
Flaps 0 ...................................................................... VY = 62 kn / 115 km/h
Maximum speed with landing flap set
Flaps 1 / 2 ................................................................ VFE = 75 kn / 140 km/h
Maximum manoeuver speed .....................................VA = 88 kn / 163 km/h
Maximum speed in turbulent air ...............................VB = 100 kn / 185 km/h
Never-exceed speed ............................................. VNE = 120 kn / 222 km/h
If VA speed is exceeded, only little rudder movement are allowed.
1.2 Weights
Maximum Take-off weight (MTOW) ................................. 1190 lbs / 540 kg
Empty weight (see. most recent weight & balance plan) .................. lbs / kg
Minimum payload (see. most recent weight & balance plan)
min. .......................................................................................121 lbs / 55 kg