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MAINTENANCE MANUAL
SAVANNAH S
Doc. No.:
MM-SVNH-EN
Revision:
07
Rev. Date:
07/11/2022
Proj. Ref.:
SVNH S
A/C:
Savannah S
Applies to Generic Serial Number:
yy-mm-54-xxxx
Page:
67/132
DOC
FMM00
5. Unscheduled Maintenance
The unscheduled maintenance is comprehensive of all the actions not foreseen during the regular
maintenance schedule. Some unusual intervention are known and therefore described in the
subchapters below. For different cases, where the maintenance work and procedure is not clear or
when the structure is affected, contact the manufacturer of the aircraft or equipment affected.
WARNING
Unscheduled maintenance can seriously affect the safety of flight
and occupants. If the maintenance action is not already described
below or there are any discrepancies or doubt about the description,
always contact the manufacturer to establish the correct
maintenance action, procedure and parts to replace
5.1. Heavy landing
Control the aircraft before the next flight.
Main landing gear:
Verify the landing gear spring shape and integrity, the attachments area, the fuselage surrounding
areas, the spring constrain brackets and its bolts, red rubber (Vulcolan), wheel rims, tyres, wheel
axis and its ring nut closure. For any problem observed, replace the part damaged with a spare new
one. If the main landing gear spring is bent abnormally or unsymmetrically (within a certain limits,
about 15° from the design), it is possible to disassemble the spring and bent again to the correct
design values by means of bending machine or hydraulic press with internal radius of 110 [mm] and
external . Design values (without any constrains or loads/weight) are the following, with +/ 5° and +/-
50 [mm] of tolerance:
Figure 10: Main landing gear spring design nominal dimensions (unloaded)