ICON A5 MM : Landing Gear : Landing Gear General Maintenance : Check Landing Gear Extended Position
Check Landing Gear Extended Position
100274-01
The following section contains the information required to evaluate the rigging of the landing gear components in the extended position.
Applicable Aircraft Serial Numbers
All
Type of Maintenance
Line
Level of Certification
LSA-RM
Task Specific Training Required
No
Special Tools Required
Inclinometer
Wing Jack Point Adapter—ICA009750
Parts Required
None
Aircraft System and Number
11—Landing Gear
Safety Equipment
As Needed
Consumables
None
Task Instructions
1. Remove the Aft Bulkhead Baggage Panel (Removal and Installation of Inspection Panels and Fairings) to access the landing gear control systems.
2. Jack the aircraft using the built-in jack points. (Jack Aircraft.)
4. Extend the landing gear to its deployed position. If already extended, cycle the landing gear: With MASTER switch ON, move LANDING GEAR switch to UP position and allow the landing gear to retract fully. Move LANDING GEAR switch to DOWN position and allow the landing gear to extend fully. Turn MASTER switch OFF.
5. With the aircraft jacked and level, zero a digital protractor along the longer of the two pushrods.
Figure 349. Main Landing Gear Installation
6. Move the digital protractor to the Bellcrank surface and read measurement. The measurement on the protractor should read 3.822 ± .237°. (See Main Landing Gear (MLG) Rigging and Rigging Check with Landing Gear Down) if out of tolerance.
7. Validate that the difference between the forward and aft bellcrank positions is 1.5°
a. With the weight off the nose landing gear, gently rotate the NLG bellcrank forward with moderate hand pressure. Measure the angle with a digital protractor. (See Figure 350) Record measurement.
b. With the weight off the nose landing gear, gently rotate the NLG bellcrank backward with moderate hand pressure. Measure the angle with a digital protractor, taking care to take the measurement in the same location as before. Record measurement.
c. If the measured difference is greater than 1.5°, the actuator, and all mounting hardware (bushings, bolts, etc), must be replaced. (See Install Nose Landing Gear Actuator.)
Figure 350. Digital Protractor
8. Bring aircraft back to ground and remove jacks.
9. Verify that the nose gear bellcrank and drag link are in line with one another in the extended position. See Nose Landing Gear (NLG) Rigging and Check with Landing Gear Down (1.0 Configuration) or Nose Landing Gear (NLG) Rigging and Check with Landing Gear Down (1.2 Configuration) for rig pin information and procedures.
10. Turn on master switch and verify that in the cockpit the landing gear indicator is in the landing gear down position.
Verification Method
Check that the results are within the acceptable limits. See Steps 6 - 10.