(b)
Remove screws from angle and bracket supports.

(c)
Carefully remove window with retainer ring by pushing it in toward center of fuselage.

(d)
Separate retainer ring from window.

(e)
Remove excess sealant from retainer ring and around window opening.

2. Installationof Side Windows (Figure 403)
(a)
Applyliberal amount of sealant to both frame and windlow until a uniform thickness is obtained.

(b)
Applybeadof sealant around inside rim of retainer ring.

(c)
Applyvinyl tape to surface of retainer ring contacting withgasket. (Surfaceof retainer ring must be free of paint prior to applying adhesive.) Place gasket on retainer ring and place retainer ring around window. Install window from inside cabin.

(d)
Secureretainerring.

(e)
Install trim moulding around inside window.

(f)
Apply bead of sealant aroundouter perimeter of window and fuselage.

3. Emergency Exit Window (Figure 404)
There is a 25.75 inch by 19.75 inch emergency exit window on the right side of the fuselage. By pulling the release handle at the top of the window frame, the latch is unlocked and the window and frame will be pulled into the cabin. The exit window and frame is factory sealed to keep cabin pressurized. Whenever exit window is removed, carefully reinstall it to not damage seal. Removal and installation of emergency exit window plexiglass is the same as for side windows. After reinstallation of emergency exit window, safety release handle (shown in Figure 404) using MS20995-CY20safety wire.
EFFECTIVITY:

040-999 56-20-00
56-20-00 PAGE
Jan 10/90

PIPER AIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL

NOTE: 1. Lightly sandwindowunderfillet with 180sandpaper.Cleanwith Stoddardsolvent and applyPR142Primer.
NOTE: 2. Sand paint,sealant,etc from cutoutedge. CleanwithStoddardsolventand apply coatof PR142 primer.
FUSELAGESKIN
CHANNEL

SEALANT(PRC1425)
FAYINGSEALUSING
SEALANT(PRC 1425)

SUPPORT(279-019)

.15" TO .25"

MASKTHISLINETO PREVENTSANDINGEXPOSED WINDOW(SEENOTE1) VINYL
TAPE SEENOTE2
WINDOW
SEALANT
(PRC 1425) (279-019)

WINDOW
VINYLTAPE
RETAINERRING
1.50
CHANNEL SEALANT (PRC1425)

FUSELAGESKIN (279-019)
DOUBLER

Installation of Side Windows
Figure 403

EFFECTIVITY:
040-999

Page
Jan 10/90 56-20-00
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL

Note: SealSurfacesindicatedwith PR383conformingto MIL-S-11031B.
Outer Plate

Cover-Placard 
A 
A  Inner 

Outer

OuterPlate
VIEWA-A

Washer
Intercostal Channel

Skin-Fuselage
Intercostal 
Skin- i  VIEWB-B 
Fuselage 
HandleCover 

SafetyWire Handle
Moulding
EmergencyExitWindows Figure404

EFFECTIVITY: 
040-999 
56-20-00
 PAGE3Jan 10/90 

PIPER AIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCE MANUAL

CHAPTER 57
LIST OF EFFECTIVE PAGES

CHAPTER
SECTION
57-EFFECTIVITY 57-CONTENTS 57-00-00 57-10-00 57-10-00 57-10-00 57-10-00 57-10-00 57-60-00
CHAPTER 
PAGE  DATE  SECTION  PAGE  DATE 
1  Jan 10/90 
1  Jan 10/90 
1  Jan 10/90 
1  Jan 10/90 
2  Jan 10/90 
3  Jan 10/90 
4  Jan 10/90 
5  Jan 10/90 
1  Jan 10/90 

LISTOF EFFECTIVE PAGESJan10/90

SUBJECT
Descriptionand Operation
Removalof Wing Installationof Wing
Ailerons Aileron Balancing Procedure
PIPER AIRCRAFT

PA-42-720(Advanced Trainer)
MAINTENANCE MANUAL
CHAPTER57 -WINGS TABLE OF CONTENTS CHAPTER 57-00-00
57-10-00
57-60-00
PAGE
1
1 2
1
1

EFFECTIVITY:
040-999
CONTENTS an10/90

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL

Wings
A. Descriptionand Operation
The Cheyenne IIIA wing consists of all metal, full cantilever, and semi-monocoque construction.Within each wing are three bladder-type fuel cells and a wing tip fuel tank. The main landing gear, built into wheel wells under each wing, are enclosed by doors when retracted. A full length I beam type main spar is attached to a forged wing carry through section which creates a continuous main spar. Additionalsupport for the wing is also provided by front and rear spar connections.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：夏延飛機維護手冊 Cheyenne IIIA PA-42-720 AMM 2(124)