Single Engine 

SERVICE KIT Cessna A Textron Crnpanu 

TITLE 

COPILOT SECONDARY SEAT STOP INSTALLATION 

EFFECTIVITY 

Model 

190 

190 

195 

195 

195A 

195A 

1956 

195B 

- Year 

1948 thru 1953 

1948 thru 1953 

1948 thru 1953 

1948 thru 1953 

1948 thru 1953 

1948 thru 1953 

1948 thru 1953 

1 948 thru 1953 

Serial Numbers 

7004 thru 7999 

1 6000 thru 161 83 

7004 thru 7999 

16000 thru 16183 

7004 thru 7999 

16000 thru 16783 

7004 thru 7999 

16000 thru 16183 

DESCRIPTION 

To install a new-design secondary seat stop. 

APPROVAL 

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

REFERENCE 

CHANGE IN WEIGHT AND BALANCE 

MODEL ................. WEIGHT INCREASE ......... 1.3 pounds 

ARM .................... Refer to the Airplane Weight and Balance Report 

and Equipment List to calculate the Arm and the 

Moment. 

RESULTANT MOMENT ....... MOMENT11 000 ............ 

Mav 14.2007 Page 1 of 9 

To obtain saTstactory results,procedures specified ~n 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 accornpl~shing the 

requirements ot this publrcatlon. 

Cemsna Alrcraft Company. Product Support, P.O. Box 7706, Wichita. Kansas 67277. U.S.A. (31 6; 517-5800, Facsimile (318) 442-9006 

COPYRIGHT Q 2007 
SERVICE KIT 

SKI 95-1 2 

MATERIAL INFORMATION 

The parts below install the secondary seat stop on the copilot seat for one airplane. 

NEW P/N QUANTITY DESCRIPTION OLD PIN DISPOSITION 

AN31 6-5R 

AN4-5A 

AN525-1 OR8 

H880015 

MS20392-1 C23 

M S20470AD4-4 

MS20470AD4-5 

MS21042-3 

MS24665-132 

MS35333-41 

MAS1 149FN432P 

NAS 11 49F0332P 

NAS1149F0432P 

51 050-2 

S2300-26 

0399377-4 

1299377-1 4 

505590-401 

1 Kit, consisting of the 

following parts: 

1 

24 inches 

1 

Nut 

Bolt 

Screw 

Grommet 

Pin 

Rivet 

Rivet 

Nut 

Cotter Pin 

Lock Washer 

Washer 

Washer 

Washer 

Grommet 

Bracket 

Extrusion 

Doubler Assembly 

Reel Assembly 

Instructions 

The material, or equivalent, listed in this table will be necessary. 

None 

None 

None 

None 

Same 

None 

None 

None 

Same 

None 

None 

None 

None 

None 

None 

None 

None 

None 

NAME 

Adhesive 

NUMBER MANUFACTURER 

EC1300LP (1 Pint) Cessna Aircraft Company 

Cessna Parts Distribution 

5800 East Pawnee 

PO Box 1 521 

Wichita. KS 6721 8 

None 

None 

None 

None 

Discard 

None 

None 

None 

Discard 

None 

None 

None 

None 

None 

None 

None 

None 

None 

USE 

To install the 

grommet 

ACCOMPLISHMENT INSTRUCTIONS 

1. Prepare the airplane for maintenance. 

A. Make sure that all switches are in the OFFMORM position. 

0. Disconnect electrical power from the airplane. 

(1 ) Disconnect the airplane battery. 

Page 2 
SERVICE KIT 

(2) Disconnect exlernal electrical power. 

C. Attach maintenance warning tags to the battery and external power receptacle that have "DO NOT 

CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS" written on them. 

2. Remove the airplane interior and the access panels as necessary to get access to the seats and floorboard 

areas where you must install the seat 5top. (Refer to the applicable sections of the Service Manual.) 

3. Do an inspection of the seat rails, rollers, roller hous~ngs, and stop pins. Refer to Cessna Service 

Information Letter SE83-6 and FAA Airworthiness Directive (AD) 87-20-03 Revision 2 or subsequent 

revision. 

4. Repair or replace components as necessary. 

5. Install the secondary seat stop as follows: 

NOTE: You can remove and install the seat as necessary as you do this installation. 

A. (Refer to Figure 1, Detail A and View G-G.) Make the 0399377-3 Cable End Mounting Bracket 

as follows: 

(1) Cut the 0399377-3 Cable End Mounting Bracket to the correct dimensions from the 0399377-4 

Extrusion. 

(2) Remove the sharp edges of the 0399377-3 Cable End Mounting Bracket. Do not drill holes 

in the 0399377-3 Cable End Mounting Bracket at this time. 

B. (Refer to Figure 1, Detail A and Views A-A, 0-0, and G-G.) Install the 0399377-3 Cable End 

Mounting Bracket as follows: 

(1) Temporarily install the S2300-26 Bracket on the 505530-401 Cable Assembly with the two 

AN316-5R Nuts and the two MS35333-41 Lock Washers. Make sure that you put the S2300-26 

Bracket on the center of the threaded end of the 505530-401 Cable Assembly. 

NOTE: You can make the hole in the S2300-26 Bracket larger to a 0.31 2-inch diarne:er. 

(2) Remove and discard the existing forward MS20392 Pin on the left seat-stop pin release handle. 

(3) Install the 505530-401 Cable Assembly with the MS20392-1 C23 Pin and the two 

NASI 149FN432P Washers. 

(4) Attach the stop pin spring and install the MS24665-132 Cotter Pin temporarily, as necessary. 

(5) (Refer to Figure 1, View A-A,) Attach the 505530-401 Cable Assembly to the 505590-401 

Reel Assembly. 

(6) (Refer to Figure 1, Detail 0.) Put the seat stop in the fully engaged position. 

(7) (Refer to Figure 1, Views A-A and B-B.) Put the 0399377-3 Bracket and the S2300-26 Bracket 

in position. 

(8) Keep an edge distance of no less than two fastener diameters between the edge of the 

0399377-3 Cable End Mounting Bracket and the center of the fasteners that you will install 

in the bracket. 

(9) (Refer to Figure 1, View G-G.) Drill four Number 30 (0.128-inch diameter) holes in the seat 

frame and the 0399377-3 Cable End Mounting Bracket for the MS20470AD4-4 Rivets that 

install the 0399377-3 Cable End Mounting Bracket to the seat frame. 

(10) Deburr and apply Alodine to the holes. 

(1 1) Attach the 0399377-3 Cable End Mounting Bracket to the seat frame with temporary fasteners. 

C. (Refer to Figure 1, Detail 8.) Install the seat in the airplane with each of the seat stop pins fully 

inserted into a seat rail hole. 

D. (Refer to Figure I, Views A-A and 643.) Put the S2300-26 Bracket in position and make marks 

for the hole locations. 

SKI 95- 12 

Page 3 
SERVICE KIT 

(Refer to Figure 1, View B-B.) Remove the 505530-401 Cable Assembly from the MS20392-1 C23 

Pin. 

(Refer to Figure 1 , Detail A,) Remove the 52300-26 Bracket from the 505530-401 Cable Assembly. 

Remove the 0399377-3 Cable End Mounting Bracket from the seat frame. 

Drill two Number 30 (0.128-inch diameter) holes in Ihe 0399377-3 Cable End Mounting Bracket for 

the rivets that attach the S2300-26 Bracket. 

Deburr and apply Alodine to the holes. 

Install the S2300-26 Bracket to the 0399377-3 Cable End Mounting Bracket with the two 

MS20470AD4-5 Rivets. 

(Refer to Figure 1, Detail A.) Attach the 0399377-3 Cable End Mounting Bracket to the seat frame 

with the four MSZ0470AD4-4 Rivets. 

(Refer to Figure 1, View B-B.) Inslall the 505530-401 Cable Assembly in the S2300-26 Bracket with 

the two AN316-5R Nuts and the two MS35333-41 Lock Washers. Do not tighten the AN31 6-5R Nuts. 

Attach the 505530-401 Cable Assembly to the MS20392-1 C23 Pin again with the two 

NAS1149FN432P Washers. 

Attach the stop pin spring or install the MS24665-132 Cotter Pin, as necessary. 

(Refer to Figure 1, Views D-D and E-E.) Make two 0399377-2 Belt Reel Brackets as follows: 

(1) Cul the 0399377-2 Bell Reel Brackets to the correct dimensions from the 0399377-4 Extrusion. 

(2) Drill four 0.203-inch diameter holes in each of the two 0399377-2 Belt Reel Brackets. 

(3) Deburr and apply Alodine to the holes. 

(Refer to Figure 1, View A-A.) With the four AN525-1 ORB Screws, NAS1149F0332P Washers, and 

MS21042-3 Nuts, install the belt reel frame of the 505590-401 Reel Assembly to the two 0399377-2 

Brackets. Put the 0399377-2 Brackets in position with the two flanges together. 

Drill four 0.203-inch diameter holes in the 0311302 Stiffener on the seat base assembly to match the 

holes in the lwo 0399377-2 Brackets. 

Deburr and apply Alodine to the holes. 

(Refer to figure 1, View A-A,) With the four AN525-10R8 Screws, NAS1149F0332P Washers, and 

MS21042-3 Nuts, install the two 0399377-2 Brackets (with the 505590-401 Reel Assembly installed) 

to the 031 1 302 Stiffener on the seat base assembly. 

(Refer to Figure 1, View A-A and View 8-B.) Install the S1050-2 Grommet in the forward side of the 

lightening hole in the 0311 302 Stiffener and install the H880015 Grommet on the forward edge of 

the seat frame as follows: 

1 Solvent clean the area around the hole where you will install the S1050-2 Grommet. Make sure 

that you remove all dust, dirt, lint, grease, oil, and moisture. 

(2) Put EC1300LP Adhesive on the surfaces of the seat frame, 0311 302 Stiffener, and grommets 

that you will bond together. 

(3) Put the grammets on the 0311302 Stiffener and push the grommets tightly against the 0311302 

Stiffener and the forward edge of the seat frame. 

(4) If there 1s too much adhesive, clean it from Ihe surface. 

(5) Hold the grommets in position with a fixture or clamps until the adhesive cures. 

(Refer to Figure 1, View C-C.) Install the 1299377-1 4 Doubler Assembly as follows: 

Page 4 

(1) Find the best position under the floorboard to install the 1299377-1 4 Doubler Assembly. 

It must be within the shaded area in View C-C of Figure 1 

It must be between the seat ralls 
SERVICE KIT 

It must be forward of the first hole for the seat stop pins 

It musl align wlth the attach point of the 505590-401 Reel Assembly to the seat base Irame 

There must be no intorference between the 1299377-14 Doubler Assembly and the 

structure of the airplane. 

(2) Use the 1299377-14 Doubler Assembly as a pattern. 

(3) Drill one 0.266-inch diameter hole through the floorboard to attach the belt end fitting. 

(4) Drifl four Number 30 (0.1 28-inch diameter) holes through the floorboard. 

(5) Install the 1299377-14 Doubler Assembly to the floorboard with the four MS20470AD4-4 Rivets. 

V. Install the carpet or other floor covering. 

W. Find the 0.266-inch diameter hole in the floorboard and make a hole in the floor covering to match 

the 0.266-inch diameter hole in the floorboard. 

X. (Refer to Figure 1, Views C-C and F-F.) Attach the belt end fitting to the floorboard and the 

1299377-1 4 Doubler Assembly with the AN4-5A Bolt and the NAS1149F0432P Washer. 

NOTE: You can use a longer AN4 Bolt as necessary to make sure that the bolt threads engage 

correctly. 

Y. (Refer to Figure 1, Detail 8.) With the seat installed in the airplane, put the seat stop pin on the 

top of the seat rail and put the seat in position. 

6. (Refer to Figure 1, Detail B and Views A-A and B-B.) Adjust the manual lock as follows: 

A. Put the stop pins 0.1 0 inch above the seat rail. 

0. Adjust the 505530-401 Cable Assembly at the S2300-26 Bracket with the AN316-5R Nuts to release 

the belt reel manual lock. 

C. Put the stop pin 0.05 inch above the seat rail. 

D. Adjust the 505530-401 Cable Assembly a1 the 52300-26 Bracket with the AN31 6-5R Nuts to lock the 

belt reel manual lock. 

E. If necessary, do Step 6 again until you see that the manual lock operates correctly. 

F. Tighten the AN316-5R Nuts. 

7, Install the equipment that you removed to get access to the seats and floorboard areas where you 

installed the seat stop. 

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

9. Make an entry in the airplane logbook that this Service Kit has been installed, 

Page 5 
SERVICE KIT - - 

SKI 95-1 2 

NOTE 1: All dimensions shown 

are in inches. 

Attach Point for 

505530-401 

Cable Assembly to 

505590-401 

Reel Assembly 

(Reference) 

505590-401 031 1302 

Cable Assembly 

MS21042-3 Nut 

(4 Each Required) 

Centerline - - - 

Belt Reel Bracket 

(2 Required) 

MS20392-1 C23 

MS24665-132 

NAS1149F0332P 

Left Seat Stop Pin 

Nut 

(I Required) (Reference) (Reference) 

(4 Each Required) VIEW A-A M99T377 

-- - . . . View Looking Down AA0399T377 - - 

Figure 1. Copilot Secondary Seat $top Installation (she; 1) 

Page 6 
SERVICE KIT 

NAS1149FN432P 

Washer 

(2 Required) 

AN31 6-5R Nut 

MS24665-132 

(1 Each Required) 

Cable End 

Bracket 

(Referrnee) 

View Looking Inboard at Lett Seat Stop 

Left Side of Seat Frame Not Showrl 

Left Seat Stop Pin Spring Not Shown 

Number 30 

(0.128-Inch Diameter) Hole 

MS20470AD4-4 Rivet 

(4 Each Required) 

I o(0) .. 0.266-Inch Diameter Hole 

%r%rOBgie Q gi 

m 00 mu 0 0 '\' 0 - (,Required) 

Doubler Assembly 

Seat Rail 

FWD) 

88W78T1:: 

- . VIEW CrC .. CM133flT37: -. - 

Figure 1. Copilot Secondary Seat Stop Installation (Sheet 2) 

Page 7 
SERVICE KIT 

I L 

0.56 \ E + / &?;is, 0399377-2 Belt Reel 

0.20 Bracket 

Radius vypical) (Reference) 

(Note 2) 

A 

0399377-2 

3.88 1-25 Belt Reel 0.203-Inch 

Bracket Diameter Hole 

(Reference) I4 Required) 

VIEW E-E 

AN4-5A Bolt 

NASl149F0432P 

1 Each Required) 

Floorboard 

(Reference) 

Doubler Assembly 

(1 Required) 

NOTE 2: Screw hole locations must FWD) 

align with 505590-401 

Reel Assembly. VIEW F-F 

Right Side of Seat Frame Not Shown - - . .- - -- . .. - 

Figure 1 . Copitot Secondary Seat .Stop Installation (Sheet 3) 

Page 8 
SERVICE KIT 

86523 52300-26 NOTE 3: Rivet hole location 

Bracket Number 30 must align with 

0.128-Inch Diameter S2300-26 Bracket. 

2 Each Required) 

MS20470AD4-4 

Rivet 

(4 Required) 

DETAIL A 

Hole 

(4 Required) 

VIEW G-G 

DETAIL DETAIL 6 DETAIL B 

Pin fully engaged Pin on top of Seat Rail Pin 0.10 (+0.05 or -0.00) 

Belt Reel locked To 0.05 above the Seat Rail Belt Reel unlocked A039QT377 

Belt Reel Imked ~~0399~377 

. 80399-377 

Figure 1. Copilol Secondaty Seat Stop Installation (Sheet 4) 

Page 9