MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
MT-7-420
9/02
12
17
3-230
Inspect the outer combustion case for condition. Inspect the
weld joints of cases that do not have the brazed screen rein-
forcement in the armpit area.
18
3-232
Clean the burner drain valve.
19
3-185
Inspect the ignition lead for burning, chafing, or cracking of con-
duit and loose connectors and broken lock wire.
20
N/A
Review engine records for compliance with all mandatory bulle-
tins, inspections and airworthiness directives.
21
N/A
Review engine records for time or cycle limited parts, compo-
nents, accessories or modules.
22
N/A
Enter component changes, inspection compliance, etc., in log-
book as required.
200 Hour Inspection
ln addition to the l00 hour inspection items, perform the following:
23
Item 1, Table III-103-
168; Item 2, Table III-
10 3-163, 3-172; Item
7, Table III-I0
Drain oil system and refill; remove, clean and reinstall the oil
filter and magnetic drain plugs.
300 Hour Inspection
In addition to the 100 hour and appropriate 200 hour inspection items, perform the fol-
lowing:
24
3-83
Inspect the compressor case when operating in an erosive
environment.
25
3-117
If the aircraft is equipped with an engine fuel filter differential
pressure warning system, replace the throw-away filter only
when an indication of contamination is obtained or every 300
hours, whichever comes first. If the aircraft is not equipped
with a differential pressure warning system, replace the fuel
filter every 300 hours unless operating experience demon-
strates that smaller time increments are advisable.
CAUTION: When there is evidence that the fuel pump filter
has been bypassed, the gas producer fuel control filter as-
sembly must be cleaned. (Refer to Cleaning the Gas Producer
Fuel Control Fuel Strainer, para 3-113.)
26
3-121
Perform a fuel pump bypass valve operational check when-
ever a fuel filter is replaced.
