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Note: TCM recommend that engines used in aerial dressing, dusting or spraying have
a maximum 1200 hours TBO or less at the operators discretion.
DA20-C1 AMM
Time Limits and
Maintenance Checks
Doc # DA201-C1
Rev. 0 05-10-00 Page 3
19 Dec 1997
5. Component Time Tracking
To make sure that components overhaul is done at the correct time you must record the data that
follows in the Airplane Maintenance Log for each component requiring overhaul:
− Serial Number.
− Flight hours and date at installation.
− Flight hours and date at removal.
Time Limits and
Maintenance Checks
DA20-C1 AMM
Page 4
19 Dec 1997 05-10-00 Doc # DA201-C1
Rev. 0
Intentionally left blank
DA20-C1 AMM
Time Limits and
Maintenance Checks
Doc # DA201-C1
Rev. 13 05-20-00 Page 1
30 Apr 2008
CHAPTER 05-20
SCHEDULED MAINTENANCE CHECKS
1. General
Do the scheduled maintenance checks in this chapter at the intervals stated in Chapter 05-10-00,
Paragraph 3. Only persons authorized by national regulatory authorities of the country where the
airplane is registered may do these checks. The inspection level for each item is a general visual
inspection unless differently specified.
2. Maintenance Checklist
Do the scheduled maintenance checks with reference to the Maintenance Checklist in this chapter.
Before starting a check, complete the requirements of Paragraphs 2 (Preparation) and 3 (Engine
Ground Test) of the Maintenance Checklist.
Do all the applicable tasks on the checklist.
All of the applicable items must be signed by authorized maintenance personnel. Record the
completion of the check in the airplane log book. Complete a copy of the Maintenance Report
(Refer to Paragraph 4).
The Maintenance Checklist is divided into zones. The zones are defined as follows:
A. Engine Compartment.
All items forward of the firewall. It includes the cowlings and the propeller.
B. Front Fuselage.
All items on the outside of the front fuselage from the firewall to the trailing edge of the wing.
It includes the nose landing gear, external parts of the main landing gear and the canopy.
C. Cockpit.
All items inside the fuselage shell from the aft face of the firewall to the aft face of the spar bridge
and seatback. It also includes the internal parts of the main landing gear and the brake system.
D. Center Fuselage, Internal.
All items inside the fuselage shell below the baggage compartment floor from the aft face of the
spar bridge and seatback to the B-bulkhead. It includes the fuel tank and the control systems on
the aft control bulkhead. And it includes the baggage compartment, the battery box and the GPS
antenna.
Time Limits and
Maintenance Checks
DA20-C1 AMM
Page 2
30 Apr 2008 05-20-00 Doc # DA201-C1
Rev. 13
E. Rear Fuselage.
All items on the outside of the fuselage from the trailing edge of the wing to the front of the
vertical stabilizer.
F. Tail.
All items of the fuselage, vertical stabilizer and horizontal stabilizer aft of the rear fuselage.
G. Wings.
All items on the inside and outside of the left and right wings. It includes the ailerons, flaps and
pitot head.
H. General.
Those items which include more than one zone at the same time. It includes items such as
control checks which need one person in the cockpit and another person at the control surface.
3. 6000 Hour Inspection
All 6000 hour inspection items listed in the tables must be performed within 6000 hours of flight time
and every 6000 hours thereafter.
A. Types of Inspection
In the 6000 hour inspection checklist, three types of inspections are specified:
- Visual Inspection
- Tap Test
- Functional or Fit Check.
(1) Visual Inspection
In composite structures, surface damage, e.g. dents or scratches may be detected by
visual inspection. You can see where fiber breakage or matrix cracking has happened.
Damage to the core may also be visible. It is easier to see damage on unpainted areas of
composite. On painted composite surfaces, damage is often first visible as waviness that
shows up when you illuminate the surface with a bright light at a low angle.
To simplify laminating, a paste made of epoxy resin filled with silica powder is sometimes
used to smooth abrupt transitions, such as sharp inside corners or at the edges of foam
core. Since the cured paste is white, it can be difficult to tell the difference between this
paste and a delamination in a glass fiber composite. The areas of paste are whiter and
have more sharply defined edges.
DA20-C1 AMM
Time Limits and
Maintenance Checks
　
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