Section 05-50
Unscheduled Maintenance Checks
1.
General ..............................................1
2.
Hard Landing Check ....................................1
3.
Propeller Strike ........................................4
4.
Engine Fire ...........................................5
5.
Lightning Strike ........................................7
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Maintenance Checks
CHAPTER 05
TIME LIMITS AND MAINTENANCE CHECKS
1. General
This Chapter will help you to do the maintenance of the DA 40 correctly. Refer to Sections 04-00 and 05-00 to help you when you do maintenance and inspections.
The times given in this Chapter are times recommended by the airplane manufacturer. Do the scheduled maintenance at the given times, because they are the minimum required to keep the airplane in a good technical condition.
These checks do not over-ride the requirements of the airworthiness authority of the country where the airplane is registered. You must make sure that all Airworthiness Directives, Service Bulletins and any other requirements of the airworthiness authority are completed as required.
The airplane manufacturer can change the time between checks. If this happens, the airplane manufacturer will publish the change as a revision to the Airplane Maintenance Manual.
Time limits and maintenance checks were established for operation in a moderate climate and on paved runways. For operation under rough conditions (extreme temperatures, saline air, wind-borne sand, operation on grass runways, etc.) it may be necessary to make changes to the maintenance requirements given in this Chapter. You can decrease the time between scheduled maintenance checks if the airplane's operation makes it necessary. You must not extend the time between scheduled maintenance checks without the airworthiness authority's approval.
2. Chapter Configuration
A. Section 05-10
Section 05-10 contains the recommended time limits for maintenance checks. It also contains the recommended time between overhaul for components. Use the data in Section 05-10 to find when to do the maintenance.
B. Section 05-20
% Section 05-20 contains the following:
%) maintenance checks schedule for 50, 100, 200, and 1000 hour checks, %) data for the annual check if necessary for national regulations, %) data for a special 5 hour check on new TAE engines, %) data for a special 25 hour check on new airplanes, %) data for the 2000 hour structural check.
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C. Section 05-30
Section 05-30 contains data for Flight Line checks.
D. Section 05-50
Section 05-50 contains the unscheduled maintenance checks. Do these checks after hard landings, propeller damage, engine fire and lightning strike.
3. Words with Special Meanings
In this Airplane Maintenance Manual, the words that follow have special meanings:
Adjust. To put to a specified position or condition. For example, adjust the clearance to 1 mm.
Check. A technical name for a group of maintenance tasks. For example, the 100 hour check.
Examine. To look carefully at an item. It includes steps such as these:
-Make sure that the item:
Is complete. Is correctly attached. Has no loose parts. Shows no signs of leaks. Is not cracked or damaged. Is not worn.
S Make sure that:
The surface protection is not damaged. All locking devices are installed correctly.
S Make sure that items such as pipes and cables:
Look serviceable. Do not rub against other items.
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