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d) Inspect all pipes, cables and linkage systems for visible faults.
2) Power plant
a) Check the alignment of the cowlings when "closed".
b) Check the skin of the cowlings for any distortion, waviness or wrinkles.
c) Check for missing or slack fasteners.
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d) Open the engine cowlings and check the engine support frame, mounting lugs and firewall for any distortion or other faults.
e) Check that engine / propeller controls operate freely.
f) Inspect all pipes and cables to ensure that they are correctly attached and routed.
g) Internally inspect the landing gear well for any obvious damage : cracks, distortion, attachment faults.
3) Wings
a) Inspect the upper and lower skins for :
- wavinesses along the spars and panels between ribs,
- slack or missing rivets,
- seepage of petrol from the structural wing tanks.
b) Visually inspect the attachment brackets to locate any cracks or riveting faults.
c) Inspect flaps and ailerons for distortion.
d) Carefully inspect the spar via the inspection doors.
e) Carry out an overall alignment check of the ailerons and flaps.
f) Open the underwing doors and inspect the internal structure. Check for distortion, cracks or riveting faults along the spar flanges and the ribs.
g) Check all pipes, cables and linkages for correct attachment and routing.
h) Inspect the aileron support brackets and the flaps support.
4) Fuselage
a) Inspect the complete length of the fuselage for distortion, wavinesses, wrinkles and slack or missing rivets.
b) Examine the top of the fuselage, forward of the windshield, to locate any faults.
5) Empennages
a) Externally inspect the skin of the fixed and control surfaces.
b) Carry out an overall alignment check on the control surfaces in the neutral position.
c) Remove the tail cone and inspect the empennages and control surfaces supports.
6) Electricity
Open the battery compartment and check that the battery is properly attached and look for spillage of electrolyte.
7) Avionics - radio navigation / communications
a) Check that all components are correctly positioned in their supports.
b) Check all antennas and their attachment.
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8) Flight controls
a) Operate all control surfaces and tabs over their complete range. Check for unusual noises, friction points and interference. Watch the control surfaces during movement to ensure that they move smoothly.
b) Check the pitch trim linkage and the cable tension.
NOTE : If a structural or operational fault is found during this "first level" investigation, the following "second-level" investigation must be carried out.
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TB 20 MAINTENANCE MANUAL 05 TIME LIMITS MAINTENANCE CHECKS TB20飞机维护手册 05 时间限制维护检查 2(90)
