Textron Cessna MK206-34-09 User manual

Single Engine MODIFICATION KIT
MK206-34-09
TITLE
GDL-69A XM WEATHER DATA ANTENNA REPLACEMENT
EFFECTIVITY
The airplanes that follow equipped with the Garmin G1000 Nav III System:
Model Serial Numbers
172R 17281357 thru 17281440
172S 172S10432 thru 172S10600
182T 18281869, 18281876 thru 18281977
T182T T18208665, T18208669 thru T18208796
206H 20608279, 20608284 thru 20608296
T206H T20608682, T20608705 thru T20608774
DESCRIPTION
This modification kit provides instructions and parts to replace the CI2580-410 GPS/VHF/XM Antenna with
a CI2580-200 Antenna and a CI420-10 Antenna.
APPROVAL
FAA approval has been obtained on technical data in this publication that affects airplane type design.
CHANGE IN WEIGHT AND BALANCE
MODEL ................................ All models
WEIGHT CHANGE ........................ 0.16 pound
ARM .................................. 64 inches
RESULTANTMOMENT ..................... 10.0 inch-pounds
MOMENT/1000 .......................... +0.01 inch-pound
December 13, 2007 Page 1 of 11
To obtain satisfactory results, procedures specified in this publication must be accomplished in accordance with accepted methods and
prevailing government regulations. Cessna Aircraft Company cannot be responsible for the quality of work performed in accomplishing the
requirements of this publication.
Cessna Aircraft Company, Product Support, P.O. Box 7706, Wichita, Kansas 67277, U.S.A. [phone], Facsimile [phone]
COPYRIGHT © 2007

MATERIAL INFORMATION
NOTE: The modification kit below covers installation for one airplane.
NEW P/N QUANTITY DESCRIPTION OLD P/N DISPOSITION
MK206-34-09 1 Kit, consisting of the
following parts:
B24809 1 Gasket None None
CI2580-200 1VHF/GPS Antenna CI2580-410 Discard
CI420-10 1 XM Antenna None None
MS24693S53 4Screw MS27039 Discard
MS51957-47 4Screw None None
1 Instructions
The material that follows, or equivalent, is necessary:
NAME NUMBER MANUFACTURER USE
Alodine 1132
Marker U074093 Cessna Aircraft Company
Cessna Parts Distribution
5800 East Pawnee
PO Box 1521
Wichita, KS 67218
To apply to bare metal
Sealant (Semkit,
3.5 ounces)U060031 Cessna Aircraft Company Cessna Parts Distribution
5800 East Pawnee
PO Box 1521
Wichita, KS 67218
To seal antenna to
fuselage
ACCOMPLISHMENT INSTRUCTIONS
1. Prepare the airplane for maintenance.
A. Make sure that all switches are in the OFF/NORM position.
B. Disconnect electrical power from the airplane.
(1) Disconnect the airplane battery.
(2) Disconnect external electrical power.
C. Attach maintenance warning tags to the battery and external power receptacle that have "DO NOT
CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS" writtenonthem.
D. Remove the headliner trim and overhead console as necessary to get access to the CI2580-410
VHF/GPS/XM Antenna #2 connectors and to install the new CI420-10 XM Antenna. (Refer to the
applicable maintenance manual, Chapter 25, Interior Upholstery - Maintenance Practices.)
NOTE: Full removal of the headliner and the interior trim is not necessary to get access to the
connectors and to install the new antenna. If you remove only the minimum necessary,
there is less risk of accidental damage to the airplane interior.
2. (Refer to Figure 4.) Remove the CI2580-410 VHF/GPS/XM Antenna #2 (on the left side of the airplane)
and put a label on each connector. Discard the antenna and attachment hardware. (Refer to the
applicable maintenance manual, Chapter 23, Communications - Maintenance Practices.)
3. Apply U060031 Sealant in one continuous bead all around the holes on the bottom of the CI2580-200
VHF/GPS Antenna.
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4. Remove unnecessary U060031 Sealant. Remove all sealant surfaces other than the bottom of the
CI2580-200 VHF/GPS Antenna.
5. (Refer to Figure 1, Detail A and View A-A (172), Figure 2, Detail A and View A-A (182), or Figure 3,
Detail A and View A-A (206).) With the four MS24693S53 Screws, install one CI2580-200 VHF/GPS
Antenna in the position where you removed the CI2580-410 VHF/GPS Antenna #2. Do not apply sealant
on top of the antenna mounting screws. (Refer to the applicable maintenance manual, Chapter 23,
Communications - Maintenance Practices.)
6. (Refer to Figure 1, Detail B and View B-B (172), Figure 2, Detail B and View B-B (182), or Figure 3, Detail
B and View (206).) Install the CI420-10 XM Antenna as follows:
A. Find the factory-installed 0511816 Doubler for the CI420-10 XM Antenna.
B. Use the hole in the center of the 0511816 Doubler to match drill one 0.75-inch diameter hole through
the airplane skin.
C. If there is not sufficient clearance for the CI420-10 XM Antenna, remove a maximum of 0.25 inch of
the material aft of the drilled 0.75-inch diameter hole to get clearance.
D. From the airplane interior, use the four nutplate holes (for the MS51957-47 Screws) in the 0511816
Doubler to match drill four Number 40 (0.098-inch diameter) holes.
E. From the airplane exterior, match drill the four Number 40 (0.098-inch diameter) holes to four
0.209-inch diameter holes.
F. Deburr the holes and apply Alodine to bare metal.
G. Make sure that the area on the skin where you will install the CI420-10 XM Antenna is clean. (Refer
to the applicable wiring diagram manual, Chapter 20, Bonding and Grounding - Maintenance
Practices.)
H. Put the B24809 Gasket and the CI420-10 XM Antenna in position on the fuselage.
I. With the four MS51957-47 Screws, attach the CI420-10 XM Antenna.
7. Make sure that there is a correct electrical bond between the two antennas and the airplane structure
as follows:
A. Remove one screw.
B. With an ohmmeter, measure the electrical resistance from the antenna base metal insert to the
structure at the screw position. The maximum allowable resistance (in ohms) at each of the four
measured positions is 0.0025.
C. Install the screw and remove and install each of the remaining screws in turn as you measure
the electrical resistance at each screw hole.
8. Torque the four MS51957-47 Screws that attach the CI420-10 XM Antenna to 25, +5 or −5 inch-pounds.
NOTE: Do not apply sealant around the CI420-10 XM Antenna.
9. Attach the cable assembly for VHF/GPS to the CI2580-200 VHF/GPS Antenna.
10. Do the routing of the XM antenna cable as necessary, and attach the cable assembly from the GDL-69A
to the CI420-10 XM Antenna.
11. Install the headliner and overhead console as necessary. (Refer to the applicable maintenance manual,
Chapter 25, Interior Upholstery - Maintenance Practices.)
12. Remove maintenance warning tags from battery and external power receptacle and connect the battery.
13. Make sure that the antennas operate correctly as follows:
A. Put the airplane in a position that gives a clear view to the southern horizon for XM.
B. Make sure that all of the necessary circuit breakers are engaged for normal mode startup of the
G1000 System.
C. Put the BAT MASTER switch to the ON position
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D. Put the AVIONICS MASTER switches to the ON position.
E. With the large and the small FMS knobs on the MFD, go to the AUX - GPS STATUS page.
F. In the GPS STATUS box, make sure that the GPS SOLUTION shows 3D NAV or 3D DIFF NAV and
the SBAS shows ACTIVE.
G. Turn to a local .VHF COMM frequency on the VHF COMM #2 radio and make sure that you can
receiveontheVHF COMM #2 radio.
H. With the large and the small FMS knobs on the MFD, go to the AUX - XM RADIO page and push
the INFO softkey to show the AUX - XM INFORMATION page.
I. Make sure that the DATA SIGNAL STRENGTH box shows STRONG.
J. Make sure that the AUDIO SIGNAL STRENGTH box shows STRONG.
K. Put the MASTER BAT switch and the AVIONICS BUS 1/BUS 2 switches in the off position.
14. Make an entry in the airplane logbook stating that this Modification Kit has been installed.
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Figure 1. GDL-69A XM Weather Data Antenna Replacement (172) (Sheet 1)
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Figure 1. GDL-69A XM Weather Data Antenna Replacement (172) (Sheet 2)
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Figure 2. GDL-69A XM Weather Data Antenna Replacement (182) (Sheet 1)
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Figure 2. GDL-69A XM Weather Data Antenna Replacement (182) (Sheet 2)
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Figure 3. GDL-69A XM Weather Data Antenna Replacement (206) (Sheet 1)
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Figure 3. GDL-69A XM Weather Data Antenna Replacement (206) (Sheet 2)
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Figure 4. Identification of Connectors for CI2580-410 VHF/GPS/XM Antenna (Sheet 1)
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