Handling, Servicing & Maint.
Pilot's Flight Manual
Reissued: 16 Jan 2019 7-13
7-11. LANDING GEAR DAMPERS - IN SPEC TION
Four pop pet type ni tro gen charged hy drau lic units in the land ing
gear as sem bly dampen land ing shock and help pre vent ground res o -
nance. The damp ers are mounted be tween the he li cop ter cen -
terframe sec tion and the land ing gear skids (two for each skid,
left-and right-hand sides). Ground res o nance and pos si ble de struc -
tion of the he li cop ter may re sult if land ing gear damp ers are not
func tion ing prop erly. Per form the fol low ing check at each preflight
in spec tion to en sure proper ex ten sion of damp ers.
Note:
En sure that the he li cop ter is in an empty-weight
con fig u ra tion (no pas sen gers or cargo aboard) but with
full fuel load.
1. Vi sually in spect land ing gear damp ers for leak age. Re place
damper if loss of hy drau lic oil is noted.
2. Ob serve stance of he li cop ter. If stance is nose down or if ex ten sion
of aft damp ers ap pears to be un usual, per form the fol low ing checks.
3. Raise and lower the tailboom above and be low the nor mal
at-rest po si tion three times.
4. On the last cy cle, slowly lower the tailboom to an at-rest po si -
tion and ob serve stance of he li cop ter. If stance of he li cop ter or
ex ten sion of aft damp ers still ap pears un usual, per form the fol -
low ing step.
5. Mea sure dis tance from shoul der of damper up per cap to top
edge of damper bot tom cap on all damp ers. Re place any damper
mea sur ing less than the di men sions in Ta ble 7-3
Ta ble 7-3. Land ing Gear Damper Di men sions
With Aux il iary Tank
With Main Tank Only Kit In stalled
Right Left Right Left
Aft 8.4 8.0* 8.0* 8.0*
For ward 9.1 8.7 8.7 8.7
*When di men sion is less than 8.0 inches, re check ex ten sion per 100-Hour
In spec tion Method (Re fer to HMI) be fore re plac ing aft damper.
SCHWEIZER
Model 269C-1 Helicopter
CSP book 2..indd 151 8/4/19 12:54 PM
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