BHT-206L4-MM-1
5-00-00
25 FEB 2011 Rev. 13 Page 141
ECCN EAR99
5-50. HARD LANDING
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
HARD LANDING
A hard landing is defined as any incident in which the impact of
the helicopter with the ground causes severe pitching of the
main rotor. Blades involved in this type of hard landing must be
thoroughly inspected visually. If no obvious damage is
discovered, the blades may be retained in service for continued
usage.
If, on a hard landing, either main rotor blade comes in contact
with the ground, tailboom, or other foreign object, both main
rotor blades are to be regarded as having been involved in a
sudden stoppage and must be returned to a Bell Helicopter
Textron approved blade repair station for inspection.
The airframe landing skids and crosstubes will deform and yield
under load forces in excess of 2.5 G's. If the cabin fuselage
contacts the ground, the G forces in the fuselage increase
abruptly. If, following a hard landing, the cabin fuselage is
resting on the ground or shows evidence of having touched the
ground, it is considered to have sustained a 10 G load.
If on a hard landing the shear pin in the elevator control tube
(206-001-098) is sheared, the eyebolt (206-001-902) that
retains the elevator control tube (206-001-098) to torque tube
(206-001-306) must be replaced as well as the elevator control
tube (206-001-098).
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