Cessna 172 R & S

Lycoming IO-360 180 HP Engine


Item #

Part #

Description

1

9954100-7

Riser OEM Cylinder #1

2

9954100-6

Riser OEM Cylinder #2

3

9954100-4

Riser OEM Cylinder #3

4

9954100-5

Riser OEM Cylinder #4

5

9954100-9

Muffler 15'' Tailpipe (no internal baffles)

5

A1754001-23

AWI FAA / PMA Muffler certified for use on R-S model aircraft 100% 321 SS

5

K1754001-23

Knisley FAA / PMA Muffler certified for use on R-S model aircraft 100% 321 SS

6*

9954100-3

Muffler Shroud (One Piece)

7*

0554001-5

Muffler Shroud (Two Piece)

8*

0750161-25

Riser Clamp Half (requires two per connection)

9*

2-hole Lycoming 77611

Exhaust Gasket (requires 4)

*Items not shown

Cessna 172R Comply within the next 50 HRS ''TIS''

AD 98-02-05 Aircraft equipped with Aeroquip Muffler P/N 00624-NH4000011-10 & 71379 0554011-2 Must be replaced due to Carbon Monoxide contamination potential.

Muffler Outer rings stamped ''PT'' & ''PTT'' are NOT Areoquip mufflers.


*** AD2018-02-04 Effective February 21 2018***

AWI Mufflers P/N A1754001-23 & A1754001-25

Cracks found around U collar attachment to skin casing, possible carbon monoxide contamination into cockpit.

Affected AWI serial numbers AWI P/N A1754001-23 (33553-33557) (34728-35322) (35322-35329) (35670; 38481-38485) (38584-38586) (38723-38727)

Affected AWI serial numbers AWI P/N A1754001-25 (32795-32800) (33558-33569) (33779-33790) (34636-34653) (34968-34984) (35159-35176) (37903-37906) (38174-38193) (38502-38506) (38566-38575) (38817-38836)