Multi-engine

Service Bulletin
May 11, 2009 MEB09-2

TITLE

MAIN LANDING GEAR TORQUE TUBE LIFE LIMIT

EFFECTIVITY
Model Year Serial Numbers
310L 1967 310L0001 thru 310L0207
310N 1968 310N0001 thru 310N0198
310P/T310P 1969 310P0001 thru 310P0240
310Q/T310Q 1970 thru 1974 310Q0001 thru 310Q1160
310R/T310R 1975 thru 1981 310R0001 thru 310R2140
320E 1967 320E0001 thru 320E0110
320F 1968 320F0001 thru 320F0045
335 1980 335-0001 thru 335-0065
340 1972 340-0001 thru 340-0115
340 1973 340-0151 thru 340-0260
340 1974 340-0301 thru 340-0370
340 1975 340-0501 thru 340-0555
340A 1976 340A0001 thru 340A0125
340A 1977 340A0201 thru 340A0375
340A 1978 340A0401 thru 340A0562
340A 1979 340A0601 thru 340A0801
340A 1980 340A0901 thru 340A1045
340A 1981 340A1201 thru 340A1280
340A 1982 340A1501 thru 340A1543
340A 1984 340A1801 thru 340A1817
401 1967/68 401-0001 thru 401-0322
401A 1969 401A0001 thru 401A0132
401B 1970/71 401B0001 thru 401B0121
401B 1972 401B0122 thru 401B0221
402 1967/68 402-0001 thru 402-0322
402A 1969 402A0001 thru 402A0129
Page 1 of 9
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, Customer Service, P.O. Box 7706, Wichita, Kansas 67277, U.S.A. (316) 517-5800, Facsimile (316) 942-9006

COPYRIGHT © 2009
 402B 1970/1971 402B0001 thru 402B0122
402B 1972 402B0201 thru 402B0249
402B 1973 402B0301 thru 402B0455
402B 1974 402B0501 thru 402B0640
402B 1975 402B0801 thru 402B0935
402B 1976 402B1001 thru 402B1100
402B 1977 402B1201 thru 402B1250
402B 1978 402B1301 thru 402B1384
411 1965/1966 411-0001 thru 411-0250
411A 1967/1968 411-0251 thru 411-0300
414 1970 414-0001 thru 414-0099
414 1971 414-0151 thru 414-0175
414 1972 414-0251 thru 414-0280
414 1973 414-0351 thru 414-0437
414 1974 414-0451 thru 414-0550
414 1975 414-0601 thru 414-0655
414 1976 414-0801 thru 414-0855
414 1977 414-0901 thru 414-0965
421 1967/1968 421-0001 thru 421-0200
421A 1969 421A0001 thru 421A0158
421B 1970 421B0001 thru 421B0056
421B 1971 421B0101 thru 421B0147
421B 1972 421B0201 thru 421B0275
421B 1973 421B0301 thru 421B0486
421B 1974 421B0501 thru 421B0665
421B 1975 421B0801 thru 421B0970

PURPOSE

It has been determined that all 5045010 Torque Tubes other than 5045010-32 and 5045010-33 Torque Tubes
must be replaced after 4000 flight hours. Replacement 5045010-32 and 5045010-33 Torque Tubes do not
have a life limit. Non-compliance with this service bulletin could potentially result in the fatigue failure of a
5045010 Torque Tube.

COMPLIANCE

Mandatory:

Airplanes with over 10,000 hours must replace the torque tube within the next 100 hours of operation or 6
months, whichever occurs first.
Airplanes with 8,000 to 10,000 hours must replace the torque tube within the next 200 hours of operation
or 12 months, whichever occurs first.

MEB09-2
Page 2 May 11, 2009
 Airplanes with 6,000 to 8,000 hours must replace the torque tube within the next 400 hours of operation
or 18 months, whichever occurs first.
Airplanes with 4,000 to 6,000 hours must replace the torque tube within the next 600 hours or 24 months ,
whichever occurs first.
NOTE: A magnetic particle inspection in accordance with the applicable Supplemental Inspection Document
32-10-01 (300 Models) or 32-10-02 (400 Models) must be completed every 100 hours of operation if
replacement of the torque tube(s) cannot be accomplished in the specified time above.

APPROVAL

FAA approval has been obtained on technical data in this publication that affects airplane type design.

MAN-HOURS

Approximately 0.8 man-hour per airplane to do the inspection.

If necessary, approximately 4.8 man-hours per side to replace a torque tube.

If necessary, approximately 12.0 man-hours to complete landing gear rigging.

MATERIAL

The parts below are available from Cessna Parts Distribution through an appropriate Cessna Service Station.

NOTE: The Airplane model and serial number, and total time in service must be provided with the
order. The order will not be processed without this information.

Part Number Description Qty/Airplane

5045010-32 Right Torque Tube 1
5045010-33 Left Torque Tube 1

ACCOMPLISHMENT INSTRUCTIONS

Change In Weight And Balance

Negligible

Material Information
The parts below may be necessary:

New P/N Quantity Description Old P/N Disposition

5045010-32 1 Right Torque Tube 5045010 Discard
5045010-33 1 Left Torque Tube 5045010 Discard

1. Do as follows for each of the two main landing gear (MLG) torque tube assemblies that are installed
on your airplane:

A. Look at applicable airplane paperwork such as logbooks, work orders, and sales/shipping receipts to
see if one or more of the MLG torque tubes that follow are installed on your airplane:

MEB09-2
May 11, 2009 Page 3
 • 5045010-1
• 5045010-2
• 5045010-7
• 5045010-8
• 5045010-13
• 5045010-14
• 5045010-19
• 5045010-20
• 5045010-24
• 5045010-25.
(1) If one or more of the part number torque tubes shown in the list above are installed, do an
inspection of the torque tubes to see if you must replace them. Go to Step 2.

(2) If you cannot find from your paperwork which part number torque tubes are installed, go
to Step 2.

(3) If a 5045010-32 Right Torque Tube Assembly and a 5045010-33 Left Torque Tube Assembly
are installed, go to Step 11.

2. Prepare the airplane for maintenance.

A. Electrically ground the airplane.

B. Make sure that all switches are in the OFF/NORM position.

C. Disconnect electrical power from the airplane.

(1) Disconnect external electrical power.

(2) Disconnect the airplane battery.

D. Attach maintenance warning tags to the battery and external power receptacle that have "DO NOT
CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS" written on them.

3. Get access to do the inspection of the 5045010 Torque Tube Assembly. (Refer to the applicable section
of the service/maintenance manual.)

NOTE: You can see the torque tube assembly from under the wheel well. You can remove one of the
circular panels from forward of the wheel well to see the forward side of the torque tube.

4. Examine the 5045010 Torque Tube Assembly to see if it is a 5045010-32 Right Torque Tube Assembly or
a 5045010-33 Left Torque Tube Assembly.

NOTE: You can use a flashlight and a mirror if necessary.

A. Look for a part number stamped on the torque tube assembly.

(1) If there is a 5045010-32 (for the right torque tube assembly) or a 5045010-33 (for the left torque
tube assembly) part number stamped on the torque tube assembly, go to Step 9.

(2) If there is no part number stamped on the torque tube assembly, go to Step 4B.

(3) If there is a part number other than 5045010-32 or a 5045010-33 stamped on the torque
tube assembly, go to Step 5.

MEB09-2
Page 4 May 11, 2009
 B. (Refer to Figure 1, View A-A.) Examine the brace on the fork bolt tube.
(1) If there are no braces on the tube, the torque tube assembly installed on your airplane is not
a 5045010-32 Right Torque Tube Assembly or a 5045010-33 Left Torque Tube Assembly.
Go to Step 5.
(2) If there is only one brace on the tube, the torque tube assembly installed on your airplane is
not a 5045010-32 Right Torque Tube Assembly or a 5045010-33 Left Torque Tube Assembly.
Go to Step 5.
(3) If there are two braces on the tube, go to Step 4C.

C. Measure the outer diameter of the fork bolt tube:

(1) If the outer diameter of the tube is approximately 0.91 inch, the torque tube assembly installed
on your airplane is a 5045010-32 Right Torque Tube Assembly or a 5045010-33 Left Torque
Tube Assembly. Go to Step 9.
(2) If the outer diameter of the tube is approximately 0.68 inch, the torque tube assembly installed
on your airplane is not a 5045010-32 Right Torque Tube Assembly or a 5045010-33 Left
Torque Tube Assembly. Go to Step 5.
5. Return the airplane to service as follows:

A. Put the airplane on jacks. (Refer to the applicable section of the service/maintenance manual.)
B. (Refer to Figure 1, Detail A and Detail B.) Remove the 5045010 Torque Tube Assembly from the
airplane. Keep the attachment hardware, but discard the nuts and the cotter pins. (Refer to the
applicable section of the service/maintenance Manual.)
C. If you must replace the left and/or the right torque tube assembly and you will do the replacement
now, go to Step 6.
D. If you must replace the left and/or the right torque tube assembly and you cannot do the replacement
now, do as follows:
(1) Do a magnetic particle inspection in accordance with the Supplemental Inspection Document
32-10-01 (300 Models) or 32-10-02 (400 Models) now and again each 100 hours until you
do the replacement.

(a) If one or more cracks are found, you must replace the torque tube before further flight.

(b) If no cracks are found, do as follows:

1 Install the used torque tube assemby in accordance with Step 6 thru Step 11.
2 Do a magnetic particle inspection in accordance with the Supplemental Inspection
Document 32-10-01 (300 Models) or 32-10-02 (400 Models) each 100 hours until
you replace the used torque tube assembly with a 5045010-32 Right Torque Tube
Assembly (5045010-33 Left Torque Tube Assembly).

WARNING: YOU MUST REPLACE THE TORQUE TUBE

ASSEMBLY WITHIN THE TIME AND CONDITION
LIMITS SPECIFIED IN THIS SERVICE BULLETIN.
FATIGUE FAILURE OF THE MLG TORQUE TUBE
ASSEMBLY CAN CAUSE DAMAGE TO THE
AIRPLANE AND DANGER TO PASSENGERS
DURING LANDING.
3 Replace the used torque tube assembly when you can in accordance with Steps 6
thru 11 and the Compliance Section of this service bulletin.
(2) Go to Step 6.

MEB09-2
May 11, 2009 Page 5
6. Install the 5045010-32 Right Torque Tube Assembly (5045010-33 Left Torque Tube Assembly) with
the kept attachment hardware.

A. Do a visual inspection of the kept hardware that attaches the torque tube assembly to the outboard
push-pull tube, uplock push-pull tube, support, 5027002-5 Support Bracket Assembly, and outboard
drive tube.

(1) If the kept hardware is in serviceable condition, keep it.

(2) If the kept hardware is not in serviceable condition, discard it.

B. Install the 5045010-32 Right Torque Tube Assembly (5045010-33 Left Torque Tube Assembly) to
the outboard push-pull tube, uplock push-pull tube, support, outboard drive tube, and 5027002-5
Support Bracket Assembly with the new nuts and cotter pins and the kept or new washers and bolts
in accordance with the applicable Illustrated Parts Catalog. (Refer to the applicable section of
the service/maintenance manual.)

7. Do all parts of the rigging of the landing gear system. (Refer to the applicable sections of the
service/maintenance manual.)

8. Take the airplane off jacks. (Refer to the applicable section of the service/maintenance manual.)

9. Install the equipment that you removed for access. (Refer to the applicable sections of the
service/maintenance manual.)

10. Remove maintenance warning tags and connect the airplane battery.

11. Make an entry in the airplane logbook that states compliance and method of compliance with this
Service Bulletin.

NOTE: This information must be considered an amendment to the Cessna Manufacturer's

Service/Maintenance Manual or Instructions for continued airworthiness and must be
accomplished for ongoing airworthiness compliance as necessary in accordance with 14 CFR
Part 43.13.

MEB09-2
Page 6 May 11, 2009
 Figure 1. MLG Torque Tube Replacement (Sheet 1)

MEB09-2
May 11, 2009 Page 7
 Figure 1. MLG Torque Tube Replacement (Sheet 2)

MEB09-2
Page 8 May 11, 2009
CREDIT

Not applicable

OWNER NOTIFICATION

On May 11, 2009 the following Owner Advisory message will be sent to applicable owners of record in
MEB09-2A.

Dear Cessna Owner:

This Owner Advisory is to inform you that MEB09-2 Main Landing Gear Torque Tube Life Limit has been issued.

It has been determined that all 5045010 Torque Tubes other than 5045010-32 and 5045010-33 Torque Tubes
must be replaced after 4000 flight hours. Replacement 5045010-32 and 5045010-33 Torque Tubes do not
have a life limit. Non-compliance with MEB09-2 could potentially result in the fatigue failure of a 5045010
Torque Tube.

Compliance is mandatory:

Airplanes with over 10,000 hours must replace the torque tube within the next 100 hours of operation or 6
months, whichever occurs first.
Airplanes with 8,000 to 10,000 hours must replace the torque tube within the next 200 hours of operation
or 12 months, whichever occurs first.
Airplanes with 6,000 to 8,000 hours must replace the torque tube within the next 400 hours of operation
or 18 months, whichever occurs first.
Airplanes with 4,000 to 6,000 hours must replace the torque tube within the next 600 hours or 24 months ,
whichever occurs first.
NOTE: A magnetic particle inspection in accordance with the applicable Supplemental Inspection Document
32-10-01 (300 Models) or 32-10-02 (400 Models) must be completed every 100 hours of operation if
replacement of the torque tube(s) cannot be accomplished in the specified time above.

The information contained in the referenced Cessna Service Bulletin shall be considered an amendment to the
Cessna Manufacturer's Service/Maintenance Manual or Instructions for continued airworthiness, and must be
accomplished for ongoing airworthiness compliance in accordance with 14 CFR Part 43.13.

Please contact a Cessna Multi-engine Service Station for detailed information and arrange to have Cessna
Service Bulletin MEB09-2 accomplished on your airplane.

* * * * * * *

MEB09-2
May 11, 2009 Page 9