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

LIST OF EFFECTIVE PAGES

INTRODUCTION

Page No.

Date of Issue Effectivity

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REVISIONS

INTRODUCTION

01-60

REVISIONS

1. MANUAL REVISIONS

CAUTION

THE MANUAL OWNER IS RESPONSIBLE FOR KEEPING IT UP-TO-
DATE.

A. Procedure:

All Revisions / Temporary revisions of this Manual are made as follows:
(1) The aircraft manufacturer will send the Revision / Temporary revision

with new manual pages:
(a) Free of charge to the Authority and to all foreign aviation authorities

on request.

(b) For a charge to the other manual holders who ask for sending them

(2) The manual holder is obliged to:

(a) Carry out revisions according to the text Revision / Temporary

revisions (replace old pages of the manual with new ones)

(b) Confirm revision in the LOG OF REVISION / LOG OF TEMPORARY

REVISION (Section 01-60).

2. MARKED OF REVISIONS

Each page that includes a revised or completed material is marked Rev. ... / Temp.
Rev. ... at the footer of the page, together with the date of Revision / Temporary
revision.
Revisions are marked by a solid revision bar along the outside margin. Simple revisions
in a figure are marked with a black arrow in a circle, which indicates that a part
of the figure has been changed.
In this way are marked only substantive changes, additions or deletions information.
Formal corrections and shifted texts are not marked.
Pages with a Temporary Revision are printed on a yellow paper.

Effectivity:

ALL

12. 06. 2020

INTRODUCTION

4. LOG OF REVISIONS

Rev. No. Affected Pages

Description / Effectivity

Date of Issue

Incorporated
by / Date

01-19, 01-22, 01-28, 01-32,
01-44, 11-9, 28-18 to 28-20,
39-6

Correction of interior
placards. Change of fuel
selector.

02. 02. 2018

Aerospool
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01-1, 01-3, 01-5, 01-7, 01-9,
01-14, 01-15, 01-19 to
01-40, 01-44, 04-3, 04-4,
05-3, 05-13, 05-19 to 05-21,
05-25, 05-27 to 05-29,
05-32, 05-33, 06-1 to 06-12,
07-2, 07-4, 07-6, 07-8, 10-1,
10-5 to 10-14, 11-3 to 11-18,
12-1 to 12-36, 20-10, 21-3 to
21-20, 23-3, 23-7, 23-8,
24-1, 24-3, 24-4, 24-6 to
24-11, 24-13 to 24-18, 25-7
to 25-8, 25-11, 25-13 to
25-16, 25-18, 25-20, 27-7 to
27-18, 27-22 to 27-36, 27-39
to 27-50, 27-53 to 27-56,
28-3, 28-7, 28-8, 28-10 to
28-20, 28-22 to 28-27, 28-30
to 28-34, 28-37, 31-5, 31-7,
31-12 to 31-14, 32-1 to
32-56, 33-6 to 33-9, 34-5,
34-10 to 34-14, 34-21,
34-29, 34-32 to 34-35, 39-1
to 39-3, 39-5 to 39-62, 51-1,
51-2, 51-6, 51-10, 51-11,
51-17, 51-18, 52-1, 52-3,
52-5, 52-6, 52-8, 52-10,
55-12, 56-11, 56-12, 56-16,
57-7 to 57-10, 57-19 to
57-26, 61-1 to 61-18, 71-5,
71-9 to 71-22, 71-25 to
71-40, 73-4, 75-1, 75-14,
76-5 to 76-12, 77-1, 77-3,
77-7 to 77-24, 78-6 to 78-10,
79-5 to 79-12, 95-1 to 95-24

Added towing equipment:
In flight adjustable propeller
KW-31, tow release, rear-
view mirror, cooling air
distributor and cooling
system, placards. Overhaul
schedule. Formal changes.
Figure improvements.
Mistake corrections.

04. 07. 2019

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REVISIONS

INTRODUCTION

Rev. No. Affected Pages

Description / Effectivity

Date of Issue

Incorporated
by / Date

01-1, 01-9, 01-10, 01-13,
01-19, 01-20, 01-23, 01-25
to 01-33, 01-38, 01-44,
01-45, 05-11, 05-17, 12-20
to 12-22, 23-7, 24-3, 24-5,
24-16, 25-1, 25-11 to 25-24,
28-31, 28-32, 28-37, 31-7
to 31-9, 32-43, 32-46, 32-48
to 32-43, 32-46, 32-48 to
32-50, 33-4 to 33-7, 34-1,
34-2, 34-6, 34-14 to 34-38,
39-1, 39-2, 39-7, 39-10,
39-27, 39-28, 39-42, 39-46
to 39-49, 39-51, 39-58,
39-59, 77-23

Added ACL/POS/NAV lights
AVE-WPSTG/R 20D MOD
(2) as equivalent substitution
for AVE-WPSTG/R 20D
MOD (1).
Added ELT Kannad AF
INTEGRA as equivalent
substitution for ELT Kannad
406 AF-COMPACT. Brake
hoses connection change.
Supplemented schedule
replacement. Improved stall
warning system scheme.
Supplemented procedures.
Administrative corrections.

29. 01. 2020

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01-1, 01-3, 01-9, 01-11,
01-12, 01-19 to 01-44, 05-18
to 05-24, 05-32, 08-3, 08-5
to 08-7, 08-9 to 08-11,
08-13, 11-10, 11-15 to
11-18, 12-1 to 12-4, 12-7 to
12-36, 23-5 to 23-7, 23-9,
24-3, 24-16, 24-18, 28-1,
28-3 to 28-10, 28-12 to
28-14, 28-16 to 28-18, 28-20
to 28-24, 28-27, 28-29 to
28-42, 32-1, 32-6, 32-10,
32-11, 32-41 to 32-45, 32-48
to 32-58, 34-1 to 34-3, 34-5,
34-9, 34-11 to 34-23, 34-27
to 34-46, 39-1 to 39-62,
57-17, 57-19 to 57-21,
71-17 to 71-19, 73-3, 73-4,
79-3 to 79-13

Added equipment XPDR
Garmin GTX 335, traffic
sensor AT-1, antennas
GA 35 and AV-75, altitude
encoder GAE12. Added fuel
pressure sensor KAVLICO.
Instrument panels
unification. Placards
actualization. Removal of
brake fluid bleeding
procedure duplicity.

Correction of washer’s order

for aileron and wing flaps
attachment. Inspection
checklist corrections.
Improved figures.
Administrative corrections.

12. 06. 2020

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01-19, 01-20, 01-22, 01-32
to 01-34, 01-36, 01-43,
05-18, 12-10, 51-07, 52-01
to 52-10, 56-01 to 56-18,
61-09 to 61-11, 76-01 to
76-12

Added simple throttle
controller. New adhesive for
windshield and windows
bonding. Unification of
canopy versions.
Administrative corrections.

24. 11. 2020

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01-3, 01-19, 01-20, 01-22,
01-23, 01-25, 01-33 to
01-37, 01-43, 01-44, 05-1 to
05-34, 10-1 to 10-14, 11-1 to
11-18, 12-12, 12-15, 12-18,
12-23, 12-32, 24-16, 57-17,
61-1 to 61-18, 71-1 to 71-40,
75-1 to 75-14, 79-1 to 79-14

Reduced inspection
tolerance for annual
inspection. Supplemented
replacement schedule and
TBO information. Removed
and updated references to

external propeller’s manuals.

Placards update.
Administrative corrections.

28. 04. 2021

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AIRWORTHINESS LIMITATIONS

AIRWORTHINESS

LIMITATIONS

04-00 AIRWORTHINESS LIMITATIONS

1. GENERAL

The  Airworthiness  Limitations  chapter  is  approved  by  European  Aviation  Safety
Agency  (EASA)  in  accordance  with  the  applicable  certification  procedures  and
the  type  certification  basis.  It  specifies  the  airworthiness  limitations  required
by CS-LSA.

This chapter specifies the maximum intervals for replacement and/or maintenance
requirements of aircraft components, systems and structures determined by life limits
and/or requiring monitoring during scheduled maintenance.

NOTE

All time limits and requirements listed in this chapter are also included
in Chapter 05 PERIODIC INSPECTIONS.

The following airworthiness limitations and requirements are separated into groups
as described below:

Maintenance limitations

Checks of components and systems that are required to be performed during
scheduled maintenance.

Replacement limitations

List of time limits at which aircraft manufacturer considers that specific
components must be replaced.

Structural limitations

Limitations of the aircraft structures based on calculations and tests approved
by the EASA.

Effectivity:

ALL

04. 07. 2019

AIRWORTHINESS
LIMITATIONS

2. DESCRIPTION

Maintenance limitations

The scheduled maintenance requirements are found in Chapter 05-20
SCHEDULED MAINTENANCE CHECKS.

Replacement limitations

List of items with time limits for the exchange of the aircraft certain parts are
shown in Chapter 05-11 REPLACEMENT SCHEDULE.

List of items with time limits for the overhaul of the aircraft certain parts are
shown in Chapter 05-12 OVERHAUL SCHEDULE.

Structural limitations

The life of the aircraft structures is established to be on conditions.

ALL

Page 05-3

PERIODIC INSPECTIONS

05-00

GENERAL

1. INTRODUCTION

This chapter includes the aircraft manufacturer's recommended time limits, mainte-
nance checks and inspections (both scheduled and unscheduled).
Recommended intervals for items inspection are based on normal usage under
average environmental conditions.

2. SPECIAL CONDITIONS

All inspection intervals for scheduled maintenance checks, replacement and overhaul
schedule and special inspections schedule noted in this manual are based on average
usage and average environmental conditions. Aircraft operated in abnormal environ-
ments (i.e. tropic, humid or cold climates, i.e. dusty and salt-water environment, etc.)
may be worn, corroded, etc. more. Operation in abnormal environments can influence
inspections, overhauls, lubrication, etc. frequency.
In these areas, periodic inspections should be performed in shortened inspection
periods based on operator

’s

experiences.

3. DEFINITIONS

100-HOUR INSPECTION

Same as an annual condition inspection, except the interval of inspection is 100 h
of operation instead of 12 calendar months. This inspection is utilized when the LSA is
being used for commercial operations such as flight instruction or rental, or both

ANNUAL CONDITION INSPECTION

Detailed inspection accomplished once a year on LSA in accordance with instructions
provided in the maintenance manual supplied with the aircraft. The purpose
of the inspection is to look for any wear, corrosion, or damage that would cause
an aircraft to not be in a condition for safe operation.

CALENDAR TIME

The time from the date on the original airworthiness certificate issued with each new
aircraft, to be used as the basis for determination of all maintenance, TBO or replace-
ment intervals.

CONDITION

lnspection for, but not limited to, cleanliness, cracks, deformation, corrosion, wear,
and loose or missing fasteners.

CORROSION

Pitting, or a surface breakdown of a material due to chemical or electro-chemical attack
by atmosphere, moisture or other agents.

DAMAGED

Rendered unusable for its intended purpose.

FAA

United States Federal Aviation Administration.

GENERAL

28. 04. 2021

PERIODIC INSPECTIONS

FLIGHT TIME / FLIGHT HOURS

The time in service from the moment the aircraft leaves the ground until it touches
the ground at the end of the flight.

FUNCTIONAL INSPECTION

It is a quantitative inspection to determine if one or more functions of an item performs
within specified limits. The function inspection is a comparative examination of a sys-
tem or an item against specific standard.

HEAVY MAINTENANCE

Any maintenance, inspection, repair, or alteration a manufacturer has designated that
requires specialized training, equipment, or facilities.

INSPECTION

An examination of an item.

ITEM

Any component or its sets of parts (including the components itself) isolated
as an entity for inspection.

LINE MAINTENANCE

Any repair, maintenance, scheduled checks, servicing, inspections, or alterations
not considered heavy maintenance that is approved by the manufacturer and is spec-

ified in the manufacturer’s maintenance manual.

LSA REPAIRMAN MAINTENANCE

U.S. FAA-certificated repairman (light sport aircraft) with a maintenance rating
as defined by 14 CFR Part 65, authorized to perform line maintenance on aircraft cer-
tificated as special LSA aircraft. Authorized to perform the annual condition/100-h
inspection on an LSA, or an equivalent rating issued by other civil aviation authorities.

MAINTENANCE MANUAL(S)

Manual provided by an LSA manufacturer or supplier that specifies all maintenance,
repairs, and alterations authorized by the manufacturer.

MAINTENANCE

Means inspection, overhaul, repair, preservations and the replacement of parts,
but excludes preventive maintenance.

MAJOR REPAIR, ALTERATION, OR MAINTENANCE

Any repair, alteration, or maintenance for which instructions to complete the task
excluded from the maintenance manual(s) supplied to the consumer are considered
major.

MANUFACTURER

Any entity engaged in the production of an LSA or component used on an LSA.

MINOR REPAIR, ALTERATION, OR MAINTENANCE

Any repair, alteration, or maintenance for which instructions provided for in the mainte-
nance manual(s) supplied to the consumer of the product are considered minor.

ALL

Page 05-5

PERIODIC INSPECTIONS

ON CONDITION

The necessary inspections and/or checks to determine that a malfunction or failure will
not occur prior to the next scheduled inspection.

OPERATING HOURS OF ENGINE

The time in service when the engine is running irrespective of the load factor
of the engine, such as idling or takeoff power.

OPERATIONAL INSPECTION

The  purpose  of  operational  inspection  is  to  determine  that  a  system  or  an  item  is
operable. This inspection requires no special equipment. The operational inspection
is  comparable  to  the  inspection  performed  out  by  the  flight  crew.  The  purpose
of  the  operational  inspection  is  to  determine  that  an  item  is  fulfilling  its  intended
purpose. It does not require quantitative tolerances. This is a failure finding task.

OVERHAUL

Maintenance, inspection, repair, or alterations that are only to be accomplished
by the original manufacturer or a facility approved by the original manufacturer
of the product.

SCHEDULED MAINTENANCE

Preventative maintenance tasks scheduled to be accomplished at specified intervals.

SPECIAL INSPECTION

lnspection of components or systems based on calendar time, hours or cycles which
does not coincide with the scheduled inspection.

UNSCHEDULED MAINTENANCE

Inspections and checks for damage after operating the aircraft in conditions which
could require unscheduled maintenance, i. e. hard landing, etc.

VISUAL INSPECTION

An observation to determine that item is fulfilling its intended purpose. Visual inspection
criteria can be accomplished without disassembly or removal of adjacent equipment.
It does not require quantitative tolerances. This is a failure finding task.

WEAR

Material or part consumed as a result of exposure to operation or usage.

ALL

Page 05-7

PERIODIC INSPECTIONS

05-10

TIME LIMITS

The inspections described herein constitute what the aircraft manufacturer considers
necessary to ensure the continued airworthiness of WT9 Dynamic LSA aircraft.

1. INTRODUCTION

The inspection program is based on the number of flight hours, operating hours
of engine and calendar time. The method for recording flight hours and operating hours
of engine remains consistent throughout the life of the aircraft.
The owner or operator must record the number of flight hours, operating hours
of engine and time of operation used for purpose of complying with inspection intervals.

2. INSPECTION INTERVALS

The aircraft manufacturer

’

s inspection program has been developed to enable

an owner to accomplish requested inspections and maintenance with Civil Aviation
Authorities regulations.
lf two inspection requirements are given for one inspection item, the limit that is
reached first must be applied.
The following inspection intervals at which the items are to be inspected on normal
usage under average environmental conditions.

A. 25-hour inspection

For the new aircraft, the special inspection must be performed at first 25 flight
hours.

B. 100-hour inspection

Complete inspection of aircraft must be performed each 100 flight hours.
At the aircraft with less than 100 flight hours flown per year an annual inspection
must be performed.

C. Annual inspection

Complete inspection of aircraft must be performed each 12 calendar months.
The inspection items to be covered in the annual inspection are identical
to the 100-hour inspection items.

D. Special inspection intervals

For special inspections specified in other intervals than 100-hour or annual,
t

he inspection of aircraft’s part or system must be performed each prescribed

interval.

Unscheduled maintenance checks

Abnormal aircraft operations require special maintenance checks. Definitions
and unscheduled inspection procedures are listed in the Chapter 05-50.

TIME LIMITS

28. 04. 2021

PERIODIC INSPECTIONS

3. INSPECTION TOLERANCES

The inspection intervals shall not deviate from the inspection time limits shown in table
of inspection tolerances (see Tab. 05-1). The exceeding of scheduled inspection inter-
val shall be used only to finish the flight that started before inspection interval
or for a flight with the purpose to reach a place, where the inspection will be carried
out.

CAUTION

IF IS THE WORD

“max.”

IS PRESCRIBED (SEE TABLE

05-4) DO NOT

APPLY

TOLERANCE.

INSPECTION INTERVAL

MAX.
TOLERANCE

INSPECTION
ENVELOPE

START

FINISH

25-hour inspection

2.5 hours

5 hours

2.5 hours be-
fore due date

2.5 hours af-
ter due date

100-hour inspection

10 hours

20 hours

10 hours be-
fore due date

10 hours after
due date

Annual inspection
(12 calendar months)

1 month

2 months

1 month before
due date

1 month after
due date

Special interval - flight
hours

10%

20%

10% before
due date

10% after due
date

Special interval - date

10%

20%

10% before
due date

10% after due
date

Tab.

05-1

Inspection Tolerances

Example: If 100-hour inspection is scheduled, it must be accomplished anytime
between 90 and 110 hours. The next 100-hour inspection must be accomplished
anytime between 190 and 210 hours, etc.
Each inspection interval can be exceeded by allowed tolerances or can be performed
early at any time prior to the regular interval as provided bellow (see Fig. 05-1):

•

ln the event of compliance of any inspection scheduled, that occurs within inspec-
tion tolerances, the next phase due point remains as originally set (see
Fig. 05-1, EXAMPLES 1 and 2).

•

ln the event of early compliance of any inspection scheduled, that occurs more
ahead than inspection tolerances of schedule, the next phase due point must be
rescheduled to establish a new due point from the time of early accomplishment
(see Fig. 05-1, EXAMPLES 3 and 4).

•

ln the event of late compliance of any inspection scheduled, the next inspection
in sequence retains a due point from the time to the late inspection was originally
scheduled (see Fig. 05-1, EXAMPLE 5).

NOTE

Inspection intervals and tolerances specified by the original equip-
ment manufacturers, Airworthiness Directives, etc. take prece-
dence over inspection intervals and tolerances authorized by air-
craft manufacturer.

TIME LIMITS

28. 04. 2021

PERIODIC INSPECTIONS

4. SERVICE BULLETINS

The aircraft manufacturer issues service information for owners in the form of three
classes of service bulletins. The service bulletins determine the time limit until the air-
craft must comply with.

A. Mandatory Service Bulletin

(“Safety Related”)

Mandatory Service Bulletin is issued in such cases:

•

Failure to meet airworthiness requirements - for repair of structural deficien-
cies, the inspection of critical parts, replacement of critical parts of the air-
craft's structure and parts used in aircraft assemblies.

•

Necessary airworthiness conditions changes concerning actions having
a direct impact on the safety, changes in

the Pilot´s Operating Handbook

(chapters Limitations, Normal Procedures, Emergency Procedures),
changes in the time limits and content maintenance tasks that have
an impact on safety.

B. Recommended Service Bulletin

Recommended Service Bulletin is issued in such cases:

•

Increasing the level of safety concerning aircraft equipment, changes
in the time limits and maintenance tasks content, changes in

the Pilot´s

Operating Handbook (chapters General, Performance).

C. Information Service Bulletin

These bulletins contain information technical-economic nature; the implementa-
tion is not required for airworthiness.

The owner should be to ensure that all applicable bulletins are complied with.

5. PUBLICATIONS, REFERENCES

All  inspections  listed  in  this  chapter,  should  be  accomplished  with  reference
to  the  WT9  Dynamic  LSA  Aircraft  Maintenance  Manual,  Airworthiness  Directives,
Service  Bulletins,  Service  Instructions,  Service  Letters  and  applicable  vendors
publications.

WT9 Dynamic LSA. AIRCRAFT MAINTENANCE MANUAL (AS-AMM-01-000, 22. 05. 2017) - page 3