Definitions; Bht-206L4-Mm - Bell 206L4 Maintenance Manual

Approval/Certificate (STA/STC), refer to the applicable
STA/STC documentation. Maintenance and inspection
of these items are the responsibility of the owner/
operator.
5-5.

DEFINITIONS

• Check, inspect, examine — Look carefully to find
the condition of the component. Find how that
condition relates to a specific standard.
• Condition — The state of an item compared to a
known standard.
• Security — The presence of attaching parts that
are properly tightened or appear to be, and the
presence of properly installed (as required)
locking devices such as lockwire, cotter pins, or
other.
• Standard — A specified rule or measure that you
use to find the condition of a component.
• Damage — Physical
component.
• Discard — Reject a component that has damage
that cannot be repaired. To permanently remove
from service.
• Inspection — A procedure that includes checking,
inspecting, and examining a system or a
component.
• Non-scheduled inspection — An inspection that
has not been scheduled.
• Periodic inspection — An inspection that is
repeated at equal time intervals.
• Progressive inspection — A scheduled inspection
that is divided into smaller segments. This makes
the best use of the time and the resources
available.
• Maintenance — The servicing and/or the repair of
a helicopter, a system, or a component that keeps
it serviceable.
ECCN EAR99
deterioration of a
• Preventive maintenance
maintenance action(s) on a regular basis to
prevent non-scheduled maintenance.
• Operating time — Actual flight or calendar time
that must be recorded in the Historical Service
Records or in the helicopter logs. The operating
time is specified as:
– Time in service (flight time) — The measured
time that starts the moment the helicopter
leaves the ground and continues until it
touches the ground at the next point of
landing. The time when the helicopter is on
the ground, with the engine and the rotor
turning, is not included.
– Calendar time — The elapsed time starts on
the day the inspection is completed, the
component is installed, or the rotor is turned
for the first time and ends on the last day of
the month that the time limit expires. Calendar
time is continuous. Calendar time does not
stop when you remove a component, put the
helicopter in storage, etc.
• Maintenance zone — A specified area of the
helicopter that may contain more than one
system or more than one group of related
components. Maintenance zones
used when you do a progressive inspection.
• Lead-The-Fleet (LTF) Program — This is a
program to validate the performance of an
approved product improvement or a change to a
maintenance interval. The engineering aspects of
this change are approved. The program is closely
monitored by Bell Helicopter Textron in an
operational environment with selected operators.
• Special Programs — These are approved
programs that may be initiated under certain
special conditions to meet specific requirements.
These programs will be clearly defined through a
plan and the engineering and maintenance
aspects will be approved by the regulatory
authorities.
25 FEB 2011 Rev. 13

BHT-206L4-MM-1

— To do small
(Figure 5-1) are
5-00-00
Page 5