Maintenance Manual
UL
POWER
UL390i UL390i
S
UL390i
SA
MM 390A01 Revision No: 2
Date:
2014-09-15
Page:
8
of
18
Scheduled maintenance checks
General note
This chapter lists the periodic inspections which must be carried out after specified periods of
operation.
Periodic inspections are those that must be performed at 50, 100 and 200 hour intervals in
accordance with the maintenance schedule (see further). Additionally a 15 hr. inspection must be
performed at 15 hours of operation of a new or overhauled engine.
Maintenance schedule procedures
All stated checks are visual inspections for damage and wear, unless otherwise stated.
All listed work must be carried out within the specified period.
For all the maintenance work an allowance of ±10hr. or 30days will be granted but these
tolerances must not be exceeded. This means that if for instance after a 100hr. check actually
carried out at 110hr. the next check is due at 200hr. ±10hr. and not at 220hr. ±10hr.
If a maintenance check is performed before the prescribed interval, the next check is to be done
at the same interval (e.g. if first 100hr. check is done at 87 hours, the next 100hr. check has to be
done at 187 hours ±10hr. or 1 year later; whichever comes first).
Checks are carried out as per the maintenance schedule where type and volume of the
maintenance work is outlined in key words.
The Inspection Sheet/ Maintenance Schedule must be filled out at each maintenance event. For
copies please contact a ULPower representative.
All pages of the maintenance check list must be marked with the respective check (e.g. 100hr.
check) on the top of the list.
All of the maintenance carried out must be initialled in the "signature" area by the performing
aircraft mechanic.
After maintenance, checks must be entered in the maintenance records. The maintenance must
be confirmed in the log book.
All discrepancies and repairs must be recorded in a report of findings to be generated and
maintained by aircraft owners.
Replacement of equipment (e.g. fuel pump, filters, etc.) has to be entered into the engine log
book stating TSN and date.
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