# Cessna Service Letter 680-53-05: Revision 2

- Rights: © Textron Aviation Inc. Filed by the FAA in regulations.gov docket FAA-2016-3705; AD 2017-06-13 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Cessna Service Letter 680-53-05](https://openairdocs.org/service-documents/cessna/sl-680-53-05.md)
- Title as filed: SL680-53-05R2
- Pages: 8
- PDF: https://openairdocs.org/files/sha256/3e/2f/3e2f09cdddaa05373ef05382d9eb09b19e9fd06e53ae9bfa37dc48fa1a3f3764
- Page: https://openairdocs.org/service-documents/cessna/sl-680-53-05/file/3e2f09cdddaa

## Text

Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

Citation
SER
VICE
LETTER
SL680
-
53
-
05
REVISION
TRANSMITT
AL
This
sheet
transmits
Revision
2
to
SL680
-
53
-
05
,
which:
A.
Changes
the
compliance
statement
to
,
"MANDA
T
OR
Y
.
Airplanes
with
7
,
000
or
more
flight
hours
,
this
service
letter
must
be
accomplished
within
100
flight
hours
from
the
date
of
receipt
of
the
original
issue
and
then
every
100
flight
hours
thereafter
until
SB680
-
53
-
08
is
completed."
B.
Updated
the
serials
included
in
the
EFFECTIVITY
section.
C.
Updates
the
area
to
be
inspected
to
include
the
entire
length
of
vertical
stif
feners.
NOTE:
This
revision
replaces
the
original
issue
and
previous
revision
of
SL680
-
53
-
05
in
their
entirety
.
REVISION
COMPLIANCE
NO
EFFECT
.
Airplanes
previously
modified
by
this
service
letter
are
not
af
fected
by
this
revision.
LOG
OF
REVISIONS
Original
Issue
December
22
,
2014
Revision
1
March
12
,
2015
Revision
2
September
30
,
2015
Original
Issue
-
December
22
,
2014
SL680
-
53
-
05
Revision
2
-
September
30
,
2015
Page
1
of
1
Cessna
Aircraft
Company
,
Cessna
Customer
Service
,
P
.O.
Box
7706
,
Wichita
,
KS
67277
,
U.S.A.
1
-
316
-
517
-
5800
COPYRIGHT
©
2014

### Page 2

(No text on this page.)

### Page 3

Citation
SER
VICE
LETTER
SL680
-
53
-
05
REVISION
TRANSMITT
AL
This
sheet
transmits
Revision
1
to
SL680
-
53
-
05
,
which:
A.
Adds
the
word
"general"
to
better
define
the
visual
inspection
that
is
required
in
the
REASON
section
,
DESCRIPTION
section
,
and
Step
4.
B.
Adds
the
note
to
Step
4
defining
a
general
visual
inspection.
NOTE:
This
revision
replaces
the
original
issue
of
SL680
-
53
-
05
in
its
entirety
.
REVISION
COMPLIANCE
NO
EFFECT
.
Airplanes
previously
modified
by
this
service
letter
are
not
af
fected
by
this
revision.
LOG
OF
REVISIONS
Original
Issue
December
22
,
2014
Revision
1
March
12
,
2015
Original
Issue
-
December
22
,
2014
SL680
-
53
-
05
Revision
2
-
September
30
,
2015
Page
1
of
1
Cessna
Aircraft
Company
,
Cessna
Customer
Service
,
P
.O.
Box
7706
,
Wichita
,
KS
67277
,
U.S.A.
1
-
316
-
517
-
5800
COPYRIGHT
©
2014

### Page 4

(No text on this page.)

### Page 5

Citation
SER
VICE
LETTER
SL680
-
53
-
05
TITLE
FUSELAGE
-
AFT
CANTED
BULKHEAD
INSPECTION
EFFECTIVITY
MODEL
SERIAL
NUMBERS
680
(Citation
Sovereign)
-
0001
,
-
0002
,
-
0006
,
-
0025
,
-
0030
,
-
0031
,
-
0032
,
-
0046
,
-
0051
,
-
0057
,
-
0064
,
-
0066
,
-
0067
,
-
0082
,
-
0104
,
-
0108
,
-
01
12
,
-
01
18
,
-
0120
,
-
0125
,
-
0132
,
-
0139
,
-
0140
,
-
0141
,
-
0144
,
-
0147
,
-
0148
,
-
0149
,
-
0153
,
-
0157
,
-
0160
,
-
0162
,
-
0163
,
-
0164
,
-
0166
,
-
0167
,
-
0169
,
-
0170
,
-
0171
,
-
0173
,
-
0174
,
-
0175
,
-
0176
,
-
0177
,
-
0178
,
-
0179
,
-
0180
,
-
0182
,
-
0183
,
-
0185
,
-
0186
,
-
0192
,
-
0193
,
-
0196
,
-
0200
,
-
0202
,
-
0204
,
-
0205
,
-
0206
,
-
0208
,
-
021
1
,
-
0216
,
-
0220
,
-
0221
,
-
0222
,
-
0227
,
-
0229
,
-
0230
,
-
0231
,
-
0234
,
-
0235
,
-
0236
,
-
0238
,
-
0241
,
-
0242
,
-
0243
,
-
0245
,
-
0246
,
-
0249
,
-
0252
,
-
0253
,
-
0255
,
-
0256
,
-
0257
,
-
0258
,
-
0260
,
-
0262
,
-
0268
,
-
0270
,
-
0271
,
-
0280
,
-
0282
,
-
0283
,
-
0284
,
-
0285
,
-
0289
,
-
0291
,
-
0292
,
-
0296
,
-
0297
,
-
0300
,
-
0301
,
-
0302
,
-
0303
,
-
0304
,
-
0306
,
-
0307
,
-
0313
,
-
0315
,
-
0317
,
-
0318
,
-
0322
,
-
0323
,
-
0324
,
-
0327
,
-
0328
,
-
0329
,
-
0333
,
-
0334
,
-
0336
,
-
0337
,
-
0339
,
-
0340
,
-
0342
,
-
0344
,
-
0346
,
-
0347
,
-
0348
,
-
0349
680
(Citation
Sovereign+)
-
0501
,
-
0504
,
-
0505
,
-
0509
,
-
0510
,
-
051
1
,
-
0512
,
-
0513
,
-
0514
,
-
0515
,
-
0516
,
-
0517
,
-
0519
,
-
0520
,
-
0522
,
-
0524
,
-
0525
,
-
0526
,
-
0527
,
-
0531
REASON
Airplanes
with
more
than
7
,
000
flight
hours
need
to
do
a
general
visual
inspection
of
the
aft
canted
bulkhead.
DESCRIPTION
This
service
letter
provides
instructions
to
do
a
general
visual
inspection
of
the
aft
canted
bulkhead.
COMPLIANCE
MANDA
T
OR
Y
.
Airplanes
with
7
,
000
or
more
flight
hours
,
this
service
letter
must
be
accomplished
within
100
flight
hours
from
the
date
of
receipt
of
the
original
issue
and
then
every
100
flight
hours
thereafter
until
SB680
-
53
-
08
is
completed.
LABOR
HOURS
WORK
PHASE
MAN
-
HOURS
Inspection
0.5
Original
Issue
-
December
22
,
2014
SL680
-
53
-
05
Revision
2
-
September
30
,
2015
Page
1
of
3
Cessna
Aircraft
Company
,
Cessna
Customer
Service
,
P
.O.
Box
7706
,
Wichita
,
KS
67277
,
U.S.A.
1
-
316
-
517
-
5800
This
document
contains
technical
data
and
is
subject
to
U.S.
export
regulations.
This
information
has
been
exported
from
the
United
States
in
accordance
with
export
administration
regulations.
Diversion
contrary
to
U.S.
law
is
prohibited.
ECCN:
9E991
COPYRIGHT
©
2014

### Page 6

SL680
-
53
-
05
Page
2
Revision
2
-
September
30
,
2015
Citation
SER
VICE
LETTER
SL680
-
53
-
05
W
ARRANTY
Eligibility:
All
airplanes
identified
in
the
Serial
Ef
fectivity
section
of
this
service
letter
.
Parts:
Authorized
Citation
Service
Facilities
,
individual
operators
,
or
other
maintenance
facilities
may
submit
a
Claim
Form
for
the
parts
kit(s)
required
for
accomplishment
of
this
service
letter
,
provided
the
work
is
completed
and
the
claim
submitted
by
the
expiration
date
shown
below
.
Labor:
Authorized
Citation
Service
Facilities
may
submit
a
Claim
Form
for
accomplishment
of
this
service
letter
,
on
eligible
airplanes
,
provided
the
work
is
completed
and
the
claim
submitted
by
the
expiration
date
shown
below
.
Expiration:
W
as
January
31
,
2017
,
will
update
to
match
the
expiration
of
SB680
-
53
-
08.
ACCOMPLISHMENT
INSTRUCTIONS
1.
Prepare
the
airplane
for
maintenance.
A.
Make
sure
that
the
airplane
is
electrically
grounded.
B.
Make
sure
that
all
switches
are
in
the
OFF
/
NORM
position.
C.
Disconnect
electrical
power
from
the
airplane.
(1)
Disconnect
the
airplane
batteries.
(2)
Disconnect
external
electrical
power
.
D.
Attach
maintenance
warning
tags
to
the
batteries
and
external
power
receptacle
that
have
"DO
NOT
CONNECT
ELECTRICAL
POWER
-
MAINTENANCE
IN
PROGRESS"
written
on
them.
2.
Make
sure
the
tail
stand
is
in
position
under
the
tail
of
the
airplane.
3.
Open
the
tailcone
maintenance
door
to
access
to
the
forward
side
of
the
aft
canted
bulkhead.
4.
(Refer
to
Figure
1.)
Do
a
general
visual
inspection
for
signs
of
debond
and
paint
cracking
around
the
edges
of
the
vertical
and
horizontal
stif
feners
outlined
in
Figure
1.
NOTE:
The
Cessna
Model
680
Maintenance
Manual
defines
a
general
visual
inspection
as
a
visual
examination
of
an
interior
or
exterior
area
,
installation
or
assembly
to
detect
obvious
damage
,
failure
,
or
irregularity
.
This
level
of
inspection
is
made
under
normally
available
lighting
conditions
such
as
daylight
,
hangar
lighting
,
flashlight
,
or
drop
-
light
and
may
require
removal
or
opening
of
access
panels
or
doors.
Stands
,
ladders
,
or
platforms
may
be
required
to
gain
proximity
to
the
area
being
checked.
A.
Report
all
signs
of
debond
or
paint
cracking
to
Cessna
Structures
at:
csstructures@txtav
.com
,
or
Phone:
316
-
517
-
6061.
NOTE:
If
there
are
indications
of
debond
or
paint
cracking
along
the
edges
of
the
vertical
or
horizontal
stif
feners
,
provide
as
much
detail
,
with
pictures
if
possible
to
Cessna
Structures
and
Customer
Support
T
eam
Sovereign
soon
as
possible
and
before
the
next
scheduled
flight.
5.
Close
the
tailcone
maintenance
door
.
6.
Remove
the
maintenance
warning
tags
and
connect
the
airplane
batteries.
7.
Record
that
this
service
letter
has
been
completed.
A.
Complete
a
Maintenance
T
ransaction
Report.
B.
Put
a
copy
of
the
completed
Maintenance
T
ransaction
Report
in
the
airplane
logbook.
C.
Send
a
copy
of
the
completed
Maintenance
T
ransaction
Report
to:
CESCOM
C
/
O
Camp
Systems
International
Incorporated
,
8201
East
34th
Street
North
,
Building
1
100
Suite
1
101
Wichita
,
KS
67226.

### Page 7 (OCR)

Citation  SERVICE LETTER  A Textron Company  Cessna
SL680-53-05
A98042
00000
Inspect area
within outline.
DETAIL А  6910T1001
A6912T1054
Figure 1. Aft Canted Bulkhead (Sheet 1)
SL680-53-05
Revision 2 - September 30, 2015  Page 3

### Page 8

(No text on this page.)

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