Sourcing Parts; Engine Maintenance; Inspections And When To Carry Them Out; There Are Four Types Of Routine Inspections - Aeros SkyRanger Operator's Manual

9.3.2 Each logbook entry detailing maintenance should be accompanied by a
signature of the person or persons that have carried out the work. Any
work that is 'flight critical' must have a second signature (in addition to
the person that has carried out the work) to certify that correct
reassembly has been carried out. This must be done by a 'qualified
person'- the definition of such a person is anyone that the owner
deems qualified for the task. Another pilot familiar with the type or
similar type, a BMAA or LAA inspector, or a professional maintainer,
are examples of persons that could be considered 'qualified' for this
task. Examples of tasks that are considered 'flight critical' are:
Dis/ reassembly of primary structure (not re/derigging).
Maintenance by replacement of primary structure
Maintenance by replacement of control systems
9.4

Sourcing parts

9.4.1 Unique airframe parts must be purchased from the manufacturer, or
another organization approved by the BMAA for manufacturing such
parts (usually if the manufacturer has ceased trading). Some parts may
be unique to the UK approved model, so this must be verified –
normally by supply from the UK agent.
9.4.2 Non unique parts may be sourced from other suppliers. However they
should be equivalent in terms of specification and dimension. If there
is doubt, then there is no doubt – they should not be used.
9.5

Engine maintenance

This should be carried out in accordance with the engine
manufacturer's specific maintenance schedule for the type and model
of engine.

9.6 Inspections and when to carry them out

9.6.1 There are four types of routine inspections:

1. Check A – this is a daily inspection. A sub version of this is a
subsequent preflight inspection, which may be slightly less detailed.
2. Check B – 25 hour / 3 month inspection (whichever comes sooner).
This inspection may be extended by 10% (2.5 hours).
3. Check C – 50 hour / 6 month inspection (whichever comes sooner).
This inspection may be also be extended by 10% (5 hours).
Skyranger Operators Manual, Issue 3, Feb 2011
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