WT9 Dynamic LSA. AIRCRAFT MAINTENANCE MANUAL (AS-AMM-01-000, 22. 05. 2017)

ALL

Page 05-11

PERIODIC INSPECTIONS

05-11

REPLACEMENT SCHEDULE

The  first  replacement  must  be  performed  no  later  than  the  recommended  period.
The  condition  of  the  item  at  the  end  of  the  first  period  can  be  used  as  a  criterion
for de-termining subsequent periods.
Items  NOT  listed  in  Tab.  05-2  are  to  be  replaced  "ON  CONDITION".
If  "ON  CONDITIONS"  items  are  worn,  inoperative,  inaccurate,  and  intermittent
and are not repairable through normal maintenance practices, they must be replaced.
Requirements on replacement of aircraft parts and equipment are given in Tab. 05-2.

CAUTION

ONLY ORIGINAL PARTS PROVIDED WITH EASA FORM 1 PURCHASED
FROM THE AIRCRAFT OR ORIGINAL EQUIPMENT MANUFACTURERS
SHALL BE INSTALLED ON THE WT9 DYNAMIC LSA AIRCRAFT.

CHPT. ITEM

REPLACEMENT

Battery

5 years or capacity drop bellow 80% or expi-
ration date on battery whichever comes first.

SV-BAT-320 battery

When test duration is less than 45 min.

EPS Magnum 601 S-LSA

18 years;
Every 6 years rocket inspection and para-
chute repacking.

Safety harness Schroth

12 years

ELT Kannad 406 AF-COMPACT
main unit battery

6 years or expiration date on battery.

ELT Kannad AF INTEGRA main
unit battery

7 years or expiration date on battery.

Fuel system rubber hoses

5 years

Rubber damper, rubber support
and rubber ropes of nose gear leg

5 years

Rubber supports of main gear
legs

5 years

Engine rubber parts

5 years;
For more information, refer to Line Mainte-
nance Manual for Rotax Engine Type 912
Series (Ref. No. MML-912).

Engine mount shocks

5 years

Engine fuel pump

5 years;
For more information, refer to Line Mainte-
nance Manual for Rotax Engine Type 912
Series (Ref. No. MML-912).

Cooling system rubber hoses

5 years

Oil system rubber hoses

5 years

Tab.

05-2

Replacement of Aircraft Parts

ALL

Page 05-13

PERIODIC INSPECTIONS

05-12

OVERHAUL SCHEDULE

The  first  overhaul  must  be  performed  no  later  than  the  recommended  period.
The  condition  of  the  item  at  the  end  of  the  first  period  can  be  used  as  a  criterion
for determining subsequent periods.
Items  NOT  listed  in  Tab.  05-3  are  to  be  overhauled  "ON  CONDITION".  If  "ON
CONDITIONS" items are worn, inoperative, inaccurate,  and intermittent and are not
repairable  through  normal  maintenance  practices,  they  must  be  overhauled
or replaced.
Requirements on overhaul aircraft parts and equipment are given in Tab. 05-3.

CAUTION

ONLY ORIGINAL PARTS PROVIDED WITH EASA FORM 1 PURCHASED
FROM THE AIRCRAFT OR ORIGINAL EQUIPMENT MANUFACTURER
SHALL BE INSTALLED ON THE WT9 DYNAMIC LSA AIRCRAFT.

CHPT. ITEM

OVERHAUL

Propeller KW-31

Recommended period is 1400 hours
or

months whichever comes first.

For overhaul period refer to the

“UM

-05 EN - User Manual Aircraft

Propeller Type-Model KW-

31”, last

valid issue.

Engine

Recommended period between over-
hauls is 2000 hours or 15 years,
whichever comes first. For more
information, refer to Maintenance
Manual (Line Maintenance) for Rotax
Engine Type 912 Series (Ref.
No. MML-912) and Service Bulletin
No. SB-912-041, last valid issue.

Tow release E 85/1-79

2000 starts / 10000 actuations or
4 years whichever comes first.

Tab.

05-3

Overhaul of Aircraft Parts

ALL

Page 05-15

PERIODIC INSPECTIONS

05-20

SCHEDULED MAINTENANCE CHECKS

CAUTION

THE RECOMMENDED PERIODS DO NOT CONSTITUTE A GUARANTEE
THE ITEM WILL REACH THE PERIOD WITHOUT MALFUNCTION.

1. RESPONSIBILITY OF OWNER

The owner is responsible for maintaining the aircraft in an airworthy condition, including
compliance with all applicable Airworthiness Directives.
The owner must ensure that qualified personnel do the maintenance.
The owner should ensure that the airframe, aircraft systems and power plant mechanic
inspecting the aircraft has access to all necessary manuals and service information.
The owner is responsible to obtain specific approval from their local Airworthiness
Authority for any alternation to the inspect program.
The owner is responsible to ensure that all service bulletins which are pertinent
to his particular operation are complied with.

2. AUTHORISATION TO PERFORM

In the particular chapters of Aircraft Maintenance Manual are established the levels
of certification needed to accomplish the task.

A. Heavy maintenance

Heavy maintenance is authorised to be performed by:

•

Independent certifying staff qualified in accordance with Part-66

•

Maintenance personnel of a Part-M, Section A Subpart F maintenance
organisation

B. Line maintenance

Line maintenance is authorised to be performed by:

•

Independent certifying staff qualified in accordance with Part-66

•

Maintenance personnel of a Part-M, Section A Subpart F maintenance
organisation

•

Some line maintenance is authorised to be performed by a Pilot/Owner
qualified in accordance with M.A.803.

Minimum required authorisation for performing of 25 hr. / 100 hr. / annual / special
inspection is independent certifying staff qualified in accordance with Part-66 or higher.

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

3. INSPECTION GUIDELINES

The List of Inspection Requirements is given in Tab. 05-4.
Detailed inspection procedures of systems and components in the aircraft will be found
in various chapters of this Aircraft Maintenance Manual.

4. INSPECTION OF ITEMS

–

GENERAL

ln the text of individual operations, where the check for condition is required, dominant
activities carried out at checking for condition can be mentioned in brackets,
e. g. "check fuselage skin for condition (damage, deformation, cracks)".

A. Movable parts:

lnspect for lubrication, servicing, security of attachments, binding, excessive
wear, safetying, proper operation, proper adjustment, correct travel, cracked fit-
tings, security of hinges, defective bearings, cleanliness, corrosion, deformation,
sealing and tension.

B. Fluid lines and hoses:

lnspect for leaks, cracks, collapsing, twisting, dents, kinks, chaffing, proper bend
radius, security, discoloration, deterioration, proper routing, rubber hoses
for hardness or flexibility loss and metal lines for corrosion, check service life
of hoses.

C. Metal parts:

lnspect for attachments, fatigue cracks, broken spot-welds, distortion, deteriora-
tion, condition of paints (especially clamps and hose ties at seams and around
fasteners for onset of corrosion) and any other apparent damage.

D. Composite parts:

lnspect for cracks, separation of bond, delamination, wear, overheating, fluid
saturation, deformation, condition of paint and any other apparent damage.

Structural fasteners:

lnspect for wear, damage, stretch, proper torque (when inspection indicates
the need for a torque check), and safety wiring.

Filters, screens and fluids:

lnspect for cleanliness and replace at specified intervals.

G. Wiring:

lnspect for security, chafing, defective insulation, loose and broken terminals,
heat deterioration, terminals corrosion and any other apparent damage.

ALL

Page 05-17

PERIODIC INSPECTIONS

5. SCHEDULED INSPECTION PROGRAM

AC TYPE: WT9 Dynamic LSA

AC MODEL: Club

SERIAL NUMBER:

REGISTRATION NUMBER:

LAST INSPECTION DATE:

LAST INSPECTION HOURS:

TOTAL F.H.:

CYCLES:

DATE IN:

DATE OUT:

INSPECTION INTERVAL (inappropriate scrape):

First 25 hr.

100 hr. / Annual

Special

Preparatory works

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Check status of:

•

Applicable Airworthiness Directives

•

Applicable Service Bulletins

•

Log Books (reported problems)

•

Registration Certificate

2. Inspect life limited parts (replaced, overhauled).

3. Drain the fuel tanks. Inspect drain valves for condition, obstruction

and blockage.

4. Clean the aircraft fully (exterior, interior).

5. Visual inspection of interior marking and placards for condition

(legibility and intactness).

6. Visual inspection of exterior marking and placards for condition

(legibility and intactness).

7. Jack the aircraft.

Tab.

05-4

Scheduled Maintenance Tasks (page 1 of 13)

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

Engine Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Engine Inspection.

For engine inspection, refer to Maintenance Manual (Line Maintenance) for Rotax Engine Type 912
Series (Ref. No. MML-912), latest issue.

2. Engine Cowlings and Firewall

2.1

Remove engine cowlings. Clean and perform visual inspection
for cracks, damages, loose or missing fasteners. Inspect
the condition of oil inspection door.

2.2

Visual inspection of engine cowlings fireproofing for condition
and attachment (bottom cowling only).

2.3

Visual inspection of landing lights for condition, attachment
and security.

2.4

Visual inspection of firewall and seals for cracks, condition
and attachment.

2.5

Visual inspection of all parts installed at firewall for condition,
attachment and security.

3. Battery

3.1

Remove battery cover. Visual inspection of terminals and cables
corrosion, tightening and condition. Inspection of battery charge
condition.

3.2

Visual inspection of battery attachment and condition of fireproof-
ing. Install battery cover.

4. Engine Mount

4.1

Visual inspection of engine mounts for weld cracks, bending,
corrosion and distortion.

4.2

Visual inspection of rubber silentblocks for cracks, excessive
deformation and condition.

4.3

Visual inspection of engine attachment, bolts and nuts security
(engine

–

engine mount, engine mount - firewall).

4.4

Remove the engine mount attaching bolts (engine mount -
firewall). Visual inspection of bolts for cracks, deformation
and damage. Install the bolts and inspect for proper nut torque.

600 hr.

5. Fuel System

5.1 Remove the fuel filter covers.

5.2

Visual inspection of fuel hoses and connections for condition, leak
and security. Visual inspection of fireproof insulation for conditions,
integrity, chafing and security.

5.3 Check and clean the strainers. Replace fuel filters.

5.4

Check the vent hoses at the bottom of fuselage for damage,
obstruction and blockage.

5.5 Install the fuel filter covers.

Tab.

05-4

Scheduled Maintenance Tasks (page 2 of 13)

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Page 05-19

PERIODIC INSPECTIONS

Engine Group (Continued)

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

6. Oil System

6.1 Visual inspection of oil tank for condition, attachment and security.

6.2

Visual inspection of oil cooler and oil thermostat for condition, leak,
attachment and security.

6.3

Visual inspection of hoses and connections for condition, leak
and security. Visual inspection of fireproof insulation for conditions,
integrity, chafing and security.

6.4 Check oil level. Add or change oil if necessary.

7. Cooling System

7.1

Visual inspection of water radiator and water thermostat for condi-
tion, leak, attachment and security.

7.2

Visual inspection of hoses and tubes for condition, leak, attach-
ment and security.

7.3

Visual inspection of overflow bottle for condition, attachment
and security. Add or change coolant if necessary.

7.4

Check the coolant level in the expansion tank and overflow bottle.
Add or change coolant if necessary.

7.5 Check the coolant condition. Change as necessary.

7.6

Towing version only:
Visual inspection of cooling air distributor for condition and attach-
ment.

8. Induction system

8.1

Visual inspection of carburettors, drip trays and control cables
for condition, attachment and security.

8.2

Visual inspection of airbox and airbox-carburettors hoses
for condition, attachment and security.

8.3

Visual inspection air filter holder for condition, attachment
and security. Check the operation of carburettor preheating control.

8.4

Visual inspection of air filter for condition, contamination,
attachment and security. Clean or replace impure filter.

8.5

Visual inspection of intake manifold and air hoses for condition,
attachment and security.

8.6

Visual inspection of shroud and air hose for condition, attachment
and security.

9. Exhaust System

9.1

Visual inspection of muffler for condition, attachment, cracks,
corrosion, deformations or damages and security.

9.2

Visual inspection of exhaust pipes for condition, attachment,
cracks, corrosion, deformations or damages and security

Tab.

05-4

Scheduled Maintenance Tasks (page 3 of 13)

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

Engine Group (Continued)

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

10. Heating and Venting

10.1

Visual inspection of mixing chamber for condition, attachment
and sealing.

10.2

Check operation of mixing chamber

’

s heating and venting flaps

control.

10.3

Visual inspection of shroud and intake deflector for conditions,
attachment and security.

10.4

Visual inspection of air hoses for condition, attachment
and security.

11. Engine Wiring

11.1 Visual inspection of wires for damage and security.

11.2

Visual inspection of sensors for condition, attachment
and security.

12. Lubrication in Engine Compartment

12.1 Lubricate according to lubrication chart (Chapter 12-20).

13. Engine Cowlings and Firewall

13.1 Install lower engine cowlings.

Propeller Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

1. Propeller PerformanceLine 175/xxx/805.5

1.1

Remove the spinner. Visual inspection of spinner for condition,
cracks and damage.

1.2

Visual inspection of propeller blades, especially on leading edges
for condition, nicks, bends, cracks and damage.

1.3

Visual inspection of propeller hub for condition, cracks, attachment
and security.

1.4 Inspect for proper nut torque.

6 months

1.5 Install spinner.

Propeller KW-31

For propeller inspection, refer to

“UM

-05 EN - User Manual Aircraft Propeller Type-Model KW-

31”,

last valid issue.

Tab.

05-4

Scheduled Maintenance Tasks (page 4 of 13)

ALL

Page 05-21

PERIODIC INSPECTIONS

Landing Gear and Brake System Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

1. Nose Landing Gear

1.1

Remove nose wheel fairing. Clean and perform visual inspection
for condition, crack, rubbing and damage.

1.2

Visual inspection of tire for cuts, uneven or excessive wear
and slippage.

1.3 Inspect proper tire pressure.

1.4

Inspect wheel disc for damage and the condition of bearings
by rotating wheel.

1.5

Visual inspection of carbon fork for condition, attachment,
delamination and damages.

1.6

Visual inspection of nose gear leg condition, attachment,
bushings, cracking, condition and security.

1.7

Visual inspection of lower and upper supports for condition,
deformations and cracks.

1.8

Visual inspection of bolt connections in the lower and upper
supports for condition and security.

1.9

Visual inspection of center mechanism for wear, condition,
attachment and security.
Operational inspection of center mechanism (turn the nose wheel
from side to side).

1.10

Visual inspection connection of steering push-pull rods
for condition, attachment and security.

1.11

Visual inspection of the rubber ropes for chafing and excessive
wear. Replace if necessary.

1.12 Lubricate according to lubrication chart (Chapter 12-20).

2. Main Landing Gear

2.1

Remove the main wheel fairings and main leg fairings. Clean
and perform visual inspection for condition, crack, rubbing
and damage.

2.2

Visual inspection of tires for cuts, uneven or excessive wear
and slippage.

2.3 Inspect proper tires pressure.

2.4

Inspect wheel discs for damage and the condition of bearings
by rotating wheels.

2.5

Visual inspection of landing gear legs for condition, cracks
or damage.

2.6

Visual inspection of fuselage structure at the entry points of landing
gear legs for delaminations.

2.7

Visual inspection of main gear legs for attachment and securing.
Inspect for proper nut torque.

2.8 Lubricate according to lubrication chart (Chapter 12-20).

Tab.

05-4

Scheduled Maintenance Tasks (page 5 of 13)

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

Landing Gear and Brake System Group (Continued)

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

3. Brake System

3.1

Visual inspection of callipers, brake discs and brake pads
for condition, attachment, wear, evidence of overheating
and securing.

3.2 Remove upholstery, both seats and pedestal panel.

3.3

Visual inspection of brake hoses for condition, attachment
and leak.

3.4

Visual inspection of master cylinder and pressure limiter
for condition, attachment and leak.
Operation inspection of master cylinder. Adjust if necessary.

3.5

Inspect the brake fluid level in reservoir. Add brake fluid,
if necessary.

3.6 Inspect the brake fluid condition. Change as necessary.

3.7 Lubricate according to lubrication chart (Chapter 12-20).

3.8 Install nose wheel fairing, main wheel fairings and main leg fairings.

Wing Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

1. Wing

1.1

Visual inspection of wings for condition, delaminations, deteriora-
tion, distortion, cracks, paint condition and other damages.

1.2

Visual inspection of stall strips and ACI stall warner for condition
and attachment.

1.3

Visual inspection of pitot probe for condition, attachment
and obstruction.

1.4

Visual inspection of anti-collision/strobe lights for condition
and attachment.

1.5

Inspect wing attachment plays by moving of wing tip up-down
and forward-backward.

1.6

Remove the wings. Visual inspection of bushings and wing root
ribs for cracks, delaminations and splintering. Lubricate bushings
and install wings.

200 hr.

1.7 Knock thoroughly the skin in order to detect delamination of shells.

Tab.

05-4

Scheduled Maintenance Tasks (page 6 of 13)

ALL

Page 05-23

PERIODIC INSPECTIONS

Wing Group (Continued)

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

2. Ailerons and Trim Tab

2.1

Visual inspection of ailerons and trim tab for condition, delamina-
tions, deterioration, distortion, cracks, paint condition and other
damages.

2.2

Visual inspection of ailerons and trim tab for attachment
and security.

2.3

Visual inspection of aileron and trim tab hinges for condition, wear,
play and freedom of movement.

2.4 Lubricate according to lubrication chart (Chapter 12-20).

2.5

Visual inspection of aileron sealing tapes for conditions
and attachment.

3. Wing Flaps

3.1

Visual inspection of wing flaps for condition, delaminations, deteri-
oration, distortion, cracks, paint condition and other damages.

3.2 Visual inspection of wing flaps for attachment and security.

3.3

Visual inspection of wing flap hinges for condition, wear, play
and freedom of movement.

3.4

Visual inspection of wing flaps stops for condition when the wing
flaps are retracted.

3.5 Lubricate according to lubrication chart (Chapter 12-20).

Fuselage Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Visual inspection of fuselage for condition, delaminations, deterio-
ration, distortion, cracks, paint condition and other damages.
Pay special attention to the bottom of wing central section
and walkway areas.

Visual inspection of landing gear legs attachment in the fuselage
for cracks, delamination and other damages.

3. Visual inspection of lower fin for attachment, cracks and damage.

4. Visual inspection of antennas for condition and security.

5. Knock thoroughly the skin in order to detect delamination of shells.

Tab.

05-4

Scheduled Maintenance Tasks (page 7 of 13)

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

Canopy Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Visual inspection of canopy for condition, operation, delaminations,
deterioration, distortion, cracks, scratches, paint condition
and other damages.

2. Visual inspection of canopy hinges for operation and security.

3. Check operation of gas struts, their attachment and security.

Check operation of canopy latch mechanism. Check the condition
of canopy guide pins and sliding slots in fuselage.

Visual inspection of air outlets for condition, obstruction
or blockage.

6. Lubricate according to lubrication chart (Chapter 12-20).

Clean the windshield and venting windows. Visual inspection
of venting windows for condition and function.

Empennage Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

1. Horizontal Stabilizer and Elevator

1.1

Visual inspection of horizontal stabilizer and elevator for condition,
delaminations, deterioration, distortion, cracks, paint condition
and other damages. Pay special attention to the connection
with the fuselage.

1.2 Visual inspection of elevator for attachment and security.

1.3

Visual inspection of elevator hinges for condition, wear, play
and freedom of movement.

1.4 Lubricate according to lubrication chart (Chapter 12-20).

1.5

Visual inspection of elevator sealing tapes for conditions
and attachment.

2. Vertical Stabilizer and Rudder

2.1

Visual inspection of vertical stabilizer and rudder for condition,
delaminations, deterioration, distortion, cracks, paint condition
and other damages.

2.2 Visual inspection of rudder for attachment and security.

2.3

Visual inspection of rudder hinges for condition, wear, play
and freedom of movement.

2.4 Lubricate according to lubrication chart (Chapter 12-20).

2.5

Visual inspection of rudder sealing tapes for conditions and attach-
ment.

Tab.

05-4

Scheduled Maintenance Tasks (page 8 of 13)

ALL

Page 05-25

PERIODIC INSPECTIONS

Control Systems Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

1. Elevator and Aileron Control

1.1

Visual inspection of control yoke for excessive play, smooth
operation and security.

1.2

Inspect of elevator control system push-pull rods, joints and attach-
ment in the fuselage for condition, excessive play and security.

1.3

Inspect of aileron control system push-pull rods, joints and attach-
ment in the wing and fuselage for condition, excessive play
and security.

1.4 Lubricate according to lubrication chart (Chapter 12-20).

1.5

Operational inspection of elevator control system for travel
and freedom of movement.

1.6

Operational inspection of aileron control system for travel
and freedom of movement.

2. Rudder Control System, Nose Wheel Steering

2.1

Visual inspection of rudder pedals for excessive play, smooth
operation and security.

2.2

Inspect the control cables for condition, attachment, wear,
and security.

2.3

Inspect of rudder control system joints and attachment for condi-
tion, excessive play and security.

2.4

Inspect connection of push-pull rods to nose landing gear leg
for condition, free play and security.

2.5 Operational inspection of remote-control adjustment of pedals.

2.6 Inspect the cable tension.

2.7 Lubricate according to lubrication chart (Chapter 12-20).

2.8

Operational inspection of rudder control system for travel
and freedom of movement.

Tab.

05-4

Scheduled Maintenance Tasks (page 9 of 13)

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

Control Systems Group (Continued)

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

3. Pitch and Roll Trim Systems

3.1

Operational inspection of pitch trim system springs, support lever
and actuator for condition, attachment, free play and security.

3.2

Operational inspection of roll trim system and actuator for condi-
tion, attachment, free play and security.

3.3 Lubricate according to lubrication chart (Chapter 12-20).

3.4

Operational inspection of pitch trim system for travel and freedom
of movement.

3.5

Operational inspection of roll trim system for travel and freedom
of movement.

Wing Flap Control System Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Remove the flap torsion tube covers and booster cover in the bag-
gage compartment.

Visual and operational inspection of slotted link for condition, wear,
proper function, free play and security.

Visual inspect the flap control system joints, booster and flap
torsion tube condition, attachment and security.

4. Lubricate according to lubrication chart (Chapter 12-20).

5. Install the pedestal panel.

Set the flap control lever gradually to all positions and check free
play of control system.

Operational inspection of wing flaps control system for smooth
motion and safe locking in all positions.

Install the flap torsion tube covers and booster cover
in the baggage compartment.

Tab.

05-4

Scheduled Maintenance Tasks (page 10 of 13)

ALL

Page 05-27

PERIODIC INSPECTIONS

Emergency Parachute System Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

1. Lock the EPS actuator.

Visual inspection of actuator and actuator protector for condition,
attachment, twine and seal condition.

3. Remove emergency parachute system cover.

4. Visual inspection of rocket for condition, attachment and security.

Visual inspection of parachute container for condition, attachment
and security.

6. Visual inspection of straps for security.

7. Install emergency parachute system cover.

CAUTION

IF INSTRUCTIONS FOR CONTINUED AIRWORTHINESS OF EMERGENCY
PARACHUTE SYSTEM ARE NOT MET, THE PARACHUTE SYSTEM MUST BE MARKED

“INOPERATIVE”.

Cockpit Group

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Visual inspection of safety belts for condition, attachment, wear
and locking.

2. Visual inspection of upholstery for condition and wear.

3. Visual inspection of seats for delamination, cracks and damages.

4. Remove the instrument panel cover.

Drain and perform visual inspection of pitot-static system
for condition.

6. Functional inspection of pitot-static system for tightness.

Max.

2 years

Visual and functional inspection of altimeters and altitude encoder
for condition and calibrations.

Max.

2 years

Visual and functional inspection of airspeed indicators for condition
and calibration.

Max.

2 years

9. Functional inspection of ELT (self-test).

10.

Visual inspection of ELT for condition, attachment, battery
corrosion and security.

Tab.

05-4

Scheduled Maintenance Tasks (page 11 of 13)

SCHEDULED MAINTENANCE CHECKS

28. 04. 2021

PERIODIC INSPECTIONS

Cockpit Group (Continued)

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

11.

Visual inspection of instrument panel for condition, attachment
and security.

12. Visual inspection of instruments for conditions and attachment.

13.

Visual inspection of wires and connectors for condition, attachment
and security.

14.

Check operation of throttle control and choke control. Check
for condition, movement and locking of controller in selected
position.

15. Lubricate according to lubrication chart (Chapter 12-20).

16. Install the instrument panel cover

17. Install seats and upholstery.

18. Lower the aircraft.

Towing equipment

Interval

(flight hours)

Initials:

First

25 hr.

100 hr./

Annual/

Special

Visual inspection of tow release for condition, attachment
and security.

Visual inspection of rear-view camera for condition, attachment
and security. Check function of rear-view camera.

Inspect the tow release control handle and levers for condition,
attachment, wear and security.

Inspect the tow release control cable and joints for condition,
attachment, wear and security.

Visual inspection of rear-view mirror for condition, attachment
and security.

Tab.

05-4

Scheduled Maintenance Tasks (page 12 of 13)

WT9 Dynamic LSA. AIRCRAFT MAINTENANCE MANUAL (AS-AMM-01-000, 22. 05. 2017) - page 4