# Cessna Single Engine Service Bulletin SEB07-2: Revision 2

- Rights: © Textron Aviation Inc. Filed by the FAA in regulations.gov docket FAA-2016-5579; AD 2016-14-05 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Cessna Single Engine Service Bulletin SEB07-2](https://openairdocs.org/service-documents/cessna/seb07-2.md)
- Title as filed: SEB07-2
- Pages: 12
- PDF: https://openairdocs.org/files/sha256/d0/09/d009f49a947dfde274539e32398fbedb6ead6049629af32eff4bdf033726b524
- Page: https://openairdocs.org/service-documents/cessna/seb07-2/file/d009f49a947d

## Text

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### Page 1 (OCR)

Single Engine
Cessna
A Textron Company
Service Bulletin
June 18, 2007  SEB07-2
Revision 2
TITLE
ENGINE MOUNT BRACKET INSPECTION
EFFECTIVITY
Model  Year  Serial Numbers
172B  1961  17247747 thru 17248734
172B  630
172C  1962  17248735 thru 17249544
172D  1963  17249545 thru 17250572
172E  1964  17250573 thru 17251822
172E  639
172F  1965  17251823 thru 17253392
172G  1966  17253393 thru 17254892
172H  1967  17254893 thru 17256492
172H  1967  17256494 thru 17256512
172H  638
1721  1968  17256513 thru 17257161
172J  660
172K  1969  17257162 thru 17258486
172K  1970  17258487 thru 17259223
172L  1971  17259224 thru 17259903
172L  1972  17259904 thru 17260758
172M  1973  17260759 thru 17261444
172M  1973  17261446 thru 17261577
172M  1973  17261579 thru 17261898
172M  17256493
172M  1974  17261899 thru 17263458
172M  1975  17263459 thru 17265684
172M  1976  17265685 thru 17267584
172N  1977  17267585 thru 17269309
Original Issue: April 16, 2007
Revision 1: May 14, 2007  Page 1 of 13
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. (316) 517-5800, Facsimile (316) 942-9006
COPYRIGHT © 2007

### Page 2 (OCR)

172N  17261445
172N  1978  17269310 thru 17270049
172N  1978  17270051 thru 17271034
172N  17261578
172N  1979  17271035 thru 17272884
175  1958 thru 1959  55001 thru 56238
175  28700A, 626, 640
175A  1960  56239 thru 56777
175A  619
175B  1961  17556778 thru 17557002
175C  1962  17557003 thru 17557119
P172D  1963  P17257120 thru P17257188
R172K  1977  R1722000 thru R1722724
R172K  1978  R1722725 thru R1722929
R172K  1979  R1722930 thru R1723199
FP172  1963  FP172-0001 thru FP172-0003
F172D  1963  F172-0001 thru F172-0018
F172E  1964  F172-0019 thru F172-0085
F172F  1965  F172-0086 thru F172-0179
F172G  1966  F172-0180 thru F172-0319
F172H  1967  F172-0320 thru F172-0431
F172H  1967  F172-0436 thru F172-0442
F172H  1967  F172-0444 thru F172-0446
F172H  1968  F172-0432 thru F172-0435
F172H  1968  F172-0443
F172H  1968  F172-0447 thru F172-0559
F172H  1969  F172-0560 thru F172-0654
F172H  1970  F17200655 thru F17200754
F172K  1971  F17200755 thru F17200804
F172L  1972  F17200805 thru F17200904
F172M  1973  F17200905 thru F17201034
F172M  1974  F17201035 thru F17201234
F172M  1975  F17201235 thru F17201384
F172M  1976  F17201385 thru F17201514
F172N  1977  F17201515 thru F17201639
F172N  1978  F17201640 thru F17201749
F172N  1979  F17201750 thru F17201909
FR172E  1968  FR17200001 thru FR17200060
FR172F  1969  FR17200061 thru FR17200145
FR172G  1970  FR17200146 thru FR17200225
FR172H  1971  FR17200226 thru FR17200275
SEB07-2 Revision 2
Page 2  June 18, 2007

### Page 3 (OCR)

FR172H  1972  FR17200276 thru FR17200350
FR172J  1973  FR17200351 thru FR17200440
FR172J  1974  FR17200441 thru FR17200530
FR172J  1975  FR17200531 thru FR17200559
FR172J  1976  FR17200560 thru FR17200590
FR172K  1977  FR17200591 thru FR17200620
FR172K  1978  FR17200621 thru FR17200630
FR172K  1979  FR17200631 thru FR17200655
PURPOSE
Reports have been received of cracks being found in some upper and lower engine truss mounting brackets
that are installed behind the firewall. This Service Bulletin provides instructions to do an inspection of the
brackets, and if necessary, to replace the brackets. Non compliance with this Service Bulletin could result in
having less than the desired structural integrity of the upper and lower engine truss mounting brackets.
COMPLIANCE
NOTE: Compliance with this revision is required if in compliance with the Original Issue or with Revision 1 of
this Service Bulletin. The repetitive inspection requirements remain the same.
For 175 Models:
Mandatory:
If any of the four (4) original brackets have not been replaced, accomplish this inspection on the affected
brackets) at the next scheduled inspection not to exceed 25 hours of operation or 12 months/annual inspection,
whichever occurs first. Repeat this inspection every 2,500 hours of operation thereafter.
NOTE: This inspection shall be accomplished on any replaced bracket at 2,500 hours of operation after
replacement and every 2,500 hours of operation thereafter.
If either the Original Issue of SEB07-2 or SEB07-2 Revision 1 has been accomplished, removal and replacement
of the engine truss to firewall mount bracket bolts and nuts shall be accomplished at the next scheduled
inspection not to exceed 100 hours of operation or 12 months/annual inspection, whichever occurs first.
For 172 Models:
Mandatory:
If any of the four (4) original brackets have not been replaced, accomplish this inspection on the affected
brackets) at the next scheduled inspection not to exceed 100 hours of operation or 12 months/annual
inspection, whichever occurs first. Repeat this inspection every 2,500 hours of operation thereafter.
NOTE: This inspection shall be accomplished on any replaced bracket at 2,500 hours of operation after
replacement and every 2,500 hours of operation thereafter.
If either the Original Issue of SEB07-2 or SEB07-2 Revision 1 has been accomplished, removal and replacement
of the engine truss to firewall mount bracket bolts and nuts shall be accomplished at the next scheduled
inspection not to exceed 100 hours of operation or 12 months/annual inspection, whichever occurs first.
SEB07-2 Revision 2
June 18, 2007  Page 3

### Page 4 (OCR)

APPROVAL
FAA approval has been obtained on technical data in this publication that affects airplane type design.
MAN-HOURS
Approximately 7.4 man-hours for inspection
If necessary, approximately 3.0 man-hours to replace each bracket
If in compliance with the Original Issue of SEB07-2 or SEB07-2 Revision 1, approximately 7.0 man-hours to
remove and replace the engine truss to firewall mount bracket bolts and nuts
MATERIAL
The parts below are available from Cessna Parts Distribution through an appropriate Cessna Service Station
for the suggested list price shown.
Part Number  Description  Qty/Airplane  Price
AN6 (See the  Bolt  4
Applicable Illustrated
Parts catalog for the
specific part numbers)
MS21045L6  Nut  4  $  1.30 (PS) ea MQ 10
NAS1149F0663P  Washer  8  $  0.07 (PS) ea MQ 100
S1450-23N22-100  Washer  4  $  5.20 (PS) ea
CR3523-5-03  Rivet  8 (if required)  4.23 (PS) ea MQ 25
MS20470AD5-6A  Rivet  8 (if required)  $  27.63 (PS) Ib
MS20470AD5-8A  Rivet  8 (if required)  $  27.19 (PS) Ib
0513132-9  Lower Left Mounting  1 (if required)  $  138.00 (S) ea
Bracket
0513132-10  Lower Right Mounting  1 (if required)  $  131.00 (S) ea
Bracket
0513132-11  Upper Mounting  2 (if required)  $ 218.00 (S) ea
Bracket (Right and
Left)
U074093  Alodine 1132 Marker  (as required)  152.00 (VR) ea
K000912  Corrosion Resistant  (as required)  339.00 (VS) ea
Primer (1.5 gal kit)
ALL PRICES SUBJECT TO CHANGE WITHOUT NOTICE
ACCOMPLISHMENT INSTRUCTIONS
Change In Weight And Balance
Negligible
SEB07-2 Revision 2
Page 4  June 18, 2007

### Page 5 (OCR)

The equipment below, or equivalent, will be necessary to do the inspection.
Name  Number  Manufacturer  Use
Borescope  Commercially available  To do the visual
Olympus, Storz, or equivalent  inspection for cracks
• 0.125-inch (2.00 mm)
diameter
• 7.87-inch (200 mm) length
probe
• 70 to 80-degree field
of view at a 30-degree
fore-oblique angle. (70 to
80-degree direct field of
view at a O-degree angle is
acceptable.)
NOTE: For airplanes not in compliance with SEB07-2 Revision 1, go to Step 1.
NOTE: For airplanes in compliance with SEB07-2 or SEB07-2 Revision 1, you must remove and replace the
AN6 Bolt and the MS21045L6 Nut in all positions, and torque the nut to 160 to 190 inch-pounds. Go
to Step 1.
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 haveiDO NOT
CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS" written on them.
2. Remove the upper and the lower engine cowlings. (Refer to the applicable sections of the service manual.)
3. Remove the pilot and the copilot seats. (Refer to the applicable sections of the service manual.)
WARNING:  WHILE YOU DO THIS INSPECTION, MAKE SURE THAT THE
ENGINE IS SAFELY HELD IN PLACE. ONE AFTER THE OTHER,
THE BOLTS THAT HOLD THE ENGINE TRUSSES TO THEIR
MOUNTING BRACKET WILL BE REMOVED. IF YOU DO NOT
SECURE THE ENGINE DURING THE INSPECTION, IT CAN MOVE
AND CAUSE INJURY TO PERSONNEL AND DAMAGE TO THE
AIRPLANE.
4.  Use an engine hoist to remove all of the engine weight from the engine truss.
NOTE: For airplanes in compliance with SEB07-2 or SEB07-2 Revision 1, go to Step 8.
NOTE: For airplanes not in compliance with SEB07-2 or SEB07-2 Revision 1, go to Step 5.
5.  Do an inspection of the left 0513132-11 Upper Mounting Bracket:
A.  (Refer to Figure 1, View A-A and Detail A.) From a position under the instrument panel, move the
wires and the insulation away from the bolt that attaches the upper left engine truss to the left
0513132-11 Upper Mounting Bracket.
SEB07-2 Revision 2
Page 6  June 18, 2007

### Page 6 (OCR)

B. Remove and discard the bolt, washers, and nut that attach the truss to the left 0513132-11 Upper
Mounting Bracket.
C. (Refer to Figure 1, View B-B.) Put a borescope through the slot in the 0513132-7 Upper Left Stringer.
(Refer to Figure 1, View D-D.) Look carefully for a deformed or cracked left 0513132-11 Upper
Mounting Bracket.
(1) If you do find deformities or cracks, go to Step 5E.
(2) If you do not find deformities or cracks, go to Step 6.
E.  (Refer to Figure 1, View B-B.) Remove the left 0513132-11 Upper Mounting Bracket from the
0513132-7 Upper Left Stringer and the airplane skin.
(1) Remove the two rivets that attach the left 0513132-11 Upper Mounting Bracket to the hat
section of the 0513132-7 Upper Left Stringer.
(2) Remove the four rivets that attach the left 0513132-11 Upper Mounting Bracket to the flange
of the 0513132-7 Upper Left Stringer and the airplane skin.
(3)  As necessary, remove rivets that are adjacent to the left 0513132-11 Upper Mounting Bracket
until you can remove the left 0513132-11 Upper Mounting Bracket from the 0513132-7 Upper
Left Stringer and the airplane.
(4)  Discard the left 0513132-11 Upper Mounting Bracket.
F.  Install the new left 0513132-11 Upper Mounting Bracket to the upper left engine truss.
Put the left 0513132-11 Upper Mounting Bracket in position at the 0513132-7 Upper Left
Stringer.
Install the two MS20470AD5-6A Rivets and two MS20470AD5-8A Rivets that attach the left
513132-11 Upper Mounting Bracket to the 0513132-7 Upper Left Stringer and the airplane skin.
(3)  Drill the four existing Number 30(0.128-inch diameter) holes in the new left 0513132-11
Upper Mounting Bracket, 0513132-7 Upper Left Stringer, and airplane skin with a Number 21
(0.159-inch diameter) drill.
Drill two Number 21(0.159-inch diameter) holes through the left 0513132-11 Upper Mounting
Bracket and the hat of the 0513132-7 Upper Left Stringer.
(5)  Drill one 0.375-inch diameter hole through the left 0513132-11 Upper Mounting Bracket for the
AN6 Bolt.
(6) Deburr the holes and apply Alodine to bare metal.
(7) Install the two CR3523-5-03 Rivets that attach the left 0513132-11 Upper Mounting Bracket to
the 0513132-7 Upper Left Stringer.
(8) Install rivets to replace the ones that you removed to get access to the 0513132-11 Mounting
Bracket.
(9) Apply Alodine to bare metal.
(10) Do a touch-up of the paint as necessary.
(11) (Refer to Figure 1, Detail A.) With the AN6 Bolt, S1450-23N22-100 Washer, two
NAS1149F0663P Washers, and MS21045L6 Nut, attach the upper left engine truss to the left
0513132-11 Upper Mounting Bracket.
(12) Torque the MS21045L6 Nut to 160 to 190 inch-pounds.
(13) Go to Step 6.
SEB07-2 Revision 2
June 18, 2007  Page 7

### Page 7 (OCR)

6. Repeat Step 5 for the right 0513132-11 Upper Mounting Bracket.
A.  (Refer to Figure 1, Detail A.) For the installation of the upper right engine truss to the right
0513132-11 Upper Mounting Bracket, use the same hardware that is specified in Step 5F(11).
7. Do an inspection of the lower left and lower right engine truss mounting brackets as follows:
Remove floorboard access panels and rudder pedal access panels as necessary to get access to
the 0513132-10 Lower Right Mounting Bracket and the 0514132-9 Lower Left Mounting Bracket.
CAUTION: When you remove the lower mounting bracket bolts, you must remove the two lower
bolts at the same time. When you install the lower mounting bracket bolts, you must
install the two lower bolts at the same time. Failure to do this can cause damage
to the engine truss, the 0513132-5 Lower Left Stringer, and the 0513132-6 Lower
Right Stringer.
B. (Refer to all applicable details and views in Figure 1.) Do Steps 5B thru 5F again for the 0513132-10
Lower Right Mounting Bracket and the 0514132-9 Lower Left Mounting Bracket as necessary. Go
to Step 9.
8.  (For airplanes in compliance with the original issue of SEB07-2 or SEB07-2 Revision 1) Remove and
replace the AN6 Bolts and the MS21045L6 Nuts as follows:
A.  (Refer to Figure 1, Detail A and Detail B.) From a position under the instrument panel, move the
wires and the insulation away from the bolts that attach the upper left and the upper right engine
truss to the upper mounting brackets.
B. Remove floorboard access panels and rudder pedal access panels as necessary to get access to
the bolts that attach the lower left and the lower right engine trusses to the lower mounting brackets.
C.  Remove and discard the upper left AN6 Bolt and MS21045L6 Nut that attach the engine truss to the
mounting bracket, and install a new AN6 Bolt and MS21045L6 Nut. Torque the MS21045L6 Nut
to 160 to 190 inch-pounds.
D. Repeat Step 8C for the upper right AN6 Bolt and MS21045L6 Nut.
CAUTION: When you remove the lower mounting bracket bolts, you must remove the two lower
bolts at the same time. When you install the lower mounting bracket bolts, you must
install the two lower bolts at the same time. Failure to do this can cause damage
to the engine truss, the 0513132-5 Lower Left Stringer, and the 0513132-6 Lower
E. Remove and discard the lower left and lower right AN6 Bolts and MS21045L6 Nuts that attach the
engine truss to the mounting brackets, and install new AN6 Bolts and MS21045L6 Nuts. Torque the
MS21045L6 Nuts to 160 to 190 inch-pounds.
9.  install all of the equipment that you moved and removed.
10. Install the pilot's and the copilot's seats.
11. Install the upper and the lower engine cowlings.
12. Remove the maintenance warning tags and connect the airplane battery.
13. Make an entry in the airplane logbook that states compliance and method of compliance with this Service
Bulletin, and also state when the next inspection is due.
NOTE: This information 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 as required per 14 CFR Part 43.13.
SEB07-2 Revision 2
Page 8  June 18, 2007

### Page 8 (OCR)

NOTE: Refer to the applicable illustrated parts
catalog for the correct ANG Bolt to install.
VIEW A-A  NAS1149F0663P
B  Washer
NAS1149F0663P  (2 Required)
Washer
(2 Required)
S1450-23N22-100
Washer  Truss
(1 Required)  (Reference)  AN6
AN6  Boit
Bolt  (1 Required)
(1 Required)  (NOTE)
(NOTE)  S1450-23N22-100
Truss  Washer
(Reference)  MS21045L6  (1 Required)
MS21045L6  Nut
Nut  (1 Required)
(1 Required)  DETAIL A
DETAIL B  Left Side Shown, Right Side Opposite
Left Side Shown, Right Side Opposite
For Model 172 thru 172N, R172K, FP172, F172D thru F172N, and FR172E thru FR172K Airplanes
Figure 1. Engine Mount Bracket Inspection (Sheet 1)
SEB07-2 Revision 2
June 18, 2007  Page 9

### Page 9 (OCR)

B6404
VIEW A-A  B
AN6
AN6  Bolt
Bolt  S1450-23N22-100  (1 Required)
S1450-23N22-100  (1 Required)  Washer  (NOTE)
Washer  (NOTE)  (1 Required)
(1 Required)
Truss
Truss  (Reference)
(Reference)
NAS1149F0663P
NAS1149F0663P  Washer
Washer  (2 Required)
(2 Required)  MS21045L6  Nut
MS21045L6  Nut  (1 Required)  DETAIL A
(1 Required)  DETAIL B  Left Side Shown, Right Side Opposite
Left Side Shown, Right Side Opposite
For Model 175 thru 175C and P172D Airplanes
Figure 1. Engine Mount Bracket Inspection (Sheet 2)
SEB07-2 Revision 2
Page 10  June 18, 2007

### Page 10 (OCR)

B6403  0513132-11  MS20470AD5-6A
Upper Mounting Bracket  Rivet
(Right and Left)  (2 If Required)
(2 If Required)  DI
ф-
WL MS20470AD5-8A
5.59 Rivet
(2 If Required)
0.375-Inch  Ф
BL  Diameter Hole  D
19.56  (1 Required)  CR3523-5-03  0513132-8
0513132-11  Rivet  Upper Right Stringer
VIEW D-D  Upper  (2 If Required)  (Shown)
Mounting  0513132-7
Bracket  Upper Left Stringer
(Reference)  VIEW B-B  (Opposite)
(Reference)
0513132-10
Lower Right Mounting Bracket
(Shown)
0513132-9
Lower Left Mounting Bracket
(Opposite)
(1 Each If Required)  14.61  BL  CR3523-5-03
Rivet
(2 If Required)
WL
18.25
0.375-Inch
Diameter Hole  MS20470AD5-6A
(1 Required)  Rivet
(2 If Required)
0513132-6
VIEW E-E  E  Lower Right Stringer
(Shown)
MS20470AD5-8A  0513132-5
Rivet  Lower Left Stringer
(2 If Required)  0513132-10 E  (Opposite)
Lower Right  (Reference)
Mounting
Bracket
(Reference)
VIEW C-C
Figure 1. Engine Mount Bracket Inspection (Sheet 3)
SEB07-2 Revision 2
June 18, 2007  Page 11

### Page 11 (OCR)

CREDIT
Not applicable
OWNER NOTIFICATION
A.  On April 16, 2007 the following Owner Advisory message was sent to applicable owners of
record in SEB07-2A.
Dear Cessna Owner:
This Owner Advisory is to inform you that SEB07-2: Engine Mount Bracket Inspection has been
released.
Reports have been received of cracks being found in some upper and lower engine truss
mounting brackets that are installed behind the firewall. This Service Bulletin provides instructions
to do an inspection of the brackets, and if necessary, to replace the brackets. Non compliance
with this Service Bulletin could result in having less than the desired structural integrity of the
upper and lower engine truss mounting brackets.
For 175 Models:
Mandatory:
if any of the four (4) original brackets have not been replaced, accomplish this inspection on the
affected brackets) at the next scheduled inspection not to exceed 25 hours of operation or 12
months/annual inspection, whichever occurs first. Repeat this inspection every 2,500 hours of
operation thereafter.
NOTE: This inspection shall be accomplished on any replaced bracket at 2,500 hours of
operation after replacement and every 2,500 hours of operation thereafter.
For 172 Models:
Mandatory:
If any of the four (4) original brackets have not been replaced, accomplish this inspection on the
affected brackets) at the next scheduled inspection not to exceed 100 hours of operation or 12
months/annual inspection, whichever occurs first. Repeat this inspection every 2,500 hours of
operation thereafter.
NOTE: This inspection shall be accomplished on any replaced bracket at 2,500 hours of
operation after replacement and every 2,500 hours of operation thereafter.
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 as
required per 14 CFR Part 43.13.
Please contact a Cessna Single Engine Service Station for detailed information and arrange to
have Cessna Service Bulletin SEB07-2 accomplished on your airplane.
B.  On May 14, 2007 the following message was sent to applicable owners of record in SEB07-2AR1
for the following model 172 airplane serial numbers: 28000 thru 29999, 36000 thru 36999, 46001
thru 46754, 610, 612, 615, 46755 thru 47746, 622, and 625.
Dear Cessna Owner:
This Owner Advisory is to inform you that SEB07-2 Revision 1 has been issued to remove your
airplane serial number from the Effectivity section of the Service Bulletin. Research of our records
revealed that your airplane is not affected by Service Bulletin SEB07-2.
SEB07-2 Revision 2
Page 12  June 18, 2007

### Page 12 (OCR)

C.  On June 18, 2007 the following Owner Advisory will be sent to applicable owners of record in
SEB07-2AR2.
Dear Cessna Owner:
This Owner Advisory is to inform you that Service Bulletin SEB07-2 Revision 2 has been issued
to revise the torque value of the engine truss to firewall mounting bracket bolts and nuts and
to require the replacement of these bolts and nuts if in compliance with the Original Issue of
SEB07-2 or SEB07-2 Revision 1.
SEB07-2 Revision 2 provides instructions to do an inspection of the upper and lower engine truss
mounting brackets that are installed behind the firewall, and if necessary, to replace the brackets.
It also provides instructions to replace the engine truss to firewall mounting bracket bolts and
nuts for airplanes in compliance with the Original Issue of SEB07-2 or SEB07-2 Revision 1.
Non compliance with this Service Bulletin could result in having less than the desired structural
integrity of the upper and lower engine truss bolts, nuts, and mounting brackets.
NOTE: Compliance with SB07-2 Revision 2 is required if in compliance with the Original Issue
or Revision 1 of this Service Bulletin. The repetitive inspection requirements remain
the same.
For 175 Models:
Mandatory:
If any of the four (4) original brackets have not been replaced, accomplish this inspection on the
affected brackets) at the next scheduled inspection not to exceed 25 hours of operation or 12
months/annual inspection, whichever occurs first. Repeat this inspection every 2,500 hours of
operation thereafter.
NOTE: This inspection shall be accomplished on any replaced bracket at 2,500 hours of
operation after replacement and every 2,500 hours of operation thereafter.
If either the Original Issue of SEB07-2 or SEB07-2 Revision 1 has been accomplished,
removal and replacement of the engine truss to firewall mount bracket bolts and nuts shall be
accomplished at the next scheduled inspection not to exceed 100 hours of operation or 12
months/annual inspection, whichever occurs first.
For 172 Models:
Mandatory:
If any of the four (4) original brackets have not been replaced, accomplish this inspection on the
affected brackets) at the next scheduled inspection not to exceed 100 hours of operation or 12
months/annual inspection, whichever occurs first. Repeat this inspection every 2,500 hours of
operation thereafter.
NOTE: This inspection shall be accomplished on any replaced bracket at 2,500 hours of
operation after replacement and every 2,500 hours of operation thereafter.
If either the Original Issue of SEB07-2 or SEB07-2 Revision 1 has been accomplished,
removal and replacement of the engine truss to firewall mount bracket bolts and nuts shall be
accomplished at the next scheduled inspection not to exceed 100 hours of operation or 12
months/annual inspection, whichever occurs first.
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 as
required per 14 CFR Part 43.13.
Please contact a Cessna Single Engine Service Station for detailed information and arrange to
have Cessna Service Bulletin SEB07-2 Revision 2 accomplished on your airplane.
SEB07-2 Revision 2
June 18, 2007  Page 13

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