NOTE:
Left Wing Shown, Right Wing Opposite and Noted Material Outlines in Dots Used on Right Wing Only.
* Heat Treat to 2024-T4 After Forming. **Heat Treat to 2024-T42 After Forming.
Skin Material -Fuselage Figure 1
EFFECTIVITY:
040-999
Jan 109053-10-00
Jan 10/90
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. Main Frame (continued)
1
5
1. Tail Recognition Lights, Elevator Controls, Stabilizer Attachment, Elevator Push Rod 2 Inspection,Elevator Sector, Rudder and Elevator Cables 3 Inspection,PressurizationOutflow Valves
4.
ELT
5.
Emergency Exit
6.
ECU, Hydraulic Reservoir and Powerpack
7.
Radarand Battery
8.
Antenna and Cable (Exec)
9.
Rudder Trim
10.
Avionics Bay, Nose Gear Steering connections
11.
Hydraulic Fill, Brake Reservoir
12.
Nose Baggage Compartment, Oxygen Bottle, ECU Ground Cooling fan, Electrical Control Panel
13.
APU Receptacle
14.
Nose Gear Doors, Nose Emergency Gear Extension System
15.
"Q" Sensor Relays
16.
Below Floor Acess, Rudder Cables, ECS Lines and Misc.
17.
Elev., Rudder, Elev. Trim and Rudder Trim Cables
18.
Elev., Rudder, Elev. Trim and Rudder Trim Cables
19.
Rudder Sector, Rudder Cables and Rudder Trim Cables
Skin Material -Fuselage Figure 2
EFFECTIVITY:
53-10-00 PAGE
10/90
53-10-00Jan3
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. Auxiliary Structure
1. FloorboardInstallation
Thefloorboard installation consists of individual floor panels attached to the aircraft bulkheads,
beams,and stiffeners. Two control systemaccess panels are provided for inspection purposes, aft
of station 57.00.
NOTE: Individual floor panels must be identified during removal to facilitate reinstallation.
332.00
ControlSystems Access Panel
SeatTracks
Sta. 57.00
Floorboard Installation
Figure3
(a)
FloorboardRemoval
(1.) Remove carpeting,seats, and other fixtures as necessary.
(2.) Removerequiredscrewsfromfloorboard.
(3.) Remove floorboardfromsupportingstructure.
(b)
FloorboardInstallation
(1.) Placefloorboard into position. Securewith properlength screws.
CAUTION: USE SPECIFIED LENGTH SCREWS ONLY TO PREVENT POSSIBLE DAMAGETO TUBING OR ELECTRICAL WIRING.
(2.) Installcarpeting and fixturespreviouslyremoved.
EFFECTIVITY:
040-999
PAGE 10/90
Jan 10/90 53-10-00
PIPERAIRCRAFT
PA-42-720 (Advanced Tralner)
MAINTENANCEMANUAL
C. AttachFittings
1. Seat Rails
Theseat rails, located in the crew and passenger areas, provide attachment points for the crew
and passenger seats. Seat rails consist of 2024-T4 extruded aluminum alloy. These are secured
to the fuselage assembly with steel flat-head structural screws.
D. AerodynamicFairings
1.
NoseCone
The nose cone, made of fiberglass, is hinged to provide easy access to the radar unit. For removal and installation procedure, refer to 52-40-00.
2.
Tail Cone
The tail cone, consisting of a stinger with an attached ventral fin, is high strength Kevlarmaterial and riveted together to form one complete assembly.
CAUTION: KEVLAR ABSORBS AND RETAINS WATER FROM RAGGED AND UNPREPARED EDGES. UNLESSPROPERLYDRILLED,HOLES ADDED TO KEVLAR PERMIT WATER TO BE ABSORBED AND WILL ADVERSELY AFFECTSTRUCTURE STRENGTHAND AIRCRAFT WEIGHTAND BALANCE. ENSUREALL EDGES ARE PROPERLYSEALED. (REFER TO DUPONT CUTTINGAND MACHINING GUIDE IN THE VENDOR PUBLICATION LIST.)
(a) TailCone Removal
1.
Removefour screws securing closure plate to tail cone. Remove closure plate.
2.
Remove screws securing tail cone assembly to fuselage. Remove tail cone.
(b) TailCone Installation
1.
Placetail cone into position on fuselage. Securewith flat-head screwspreviously removed.
2.
Install closure plate.Secure with four flat-head screwspreviouslyremoved.
3.
Fuselage to Wing Fillets
Aerodynamicsmoothnessbetweenthe fuselage and wing is provided by fuselageto wing fillets. Each wing fillet installation consistsof a forward fillet, upper fillet, aft fillet, lower forwardfillet, and loweraft fillet. The forward, upper, and aft fillet assembliesare made of high-strengthKevlar fiber, and are secured to the fuselage and wing with flat-headmachinescrews.
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