CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 201
Original
21-20-00
VENT SYSTEM
MAINTENANCE PRACTICES
1. Vent System
(Ref. Figure 201)
A. Vent System Inspection
(1). Open right forward access door assem
bly R155 and transmission access door
assembly R210 (Ref. Section 06-00-00).
(2). Remove cabin compartment interior
roof panels (Ref. Section 25-20-00).
(3). Inspect air scoop for cracks. Repair or
replace as required.
(4). Inspect inlet air screen for cracked and
broken wire mesh. Inspect for obstruc
tion, corrosion and security. Repair or
replace as required.
(5). Inspect inlet duct for cracks, deforma
tion, and security. Repair or replace as
required.
(6). Inspect water separator for cleanness,
cracks, corrosion and security. Inspect
welds at mounting brackets for cracks.
Repair or replace as required.
(7). Inspect water separator rubber drain
check valve for deterioration. Repair or
replace as required.
(8). Inspect fan assembly for cleanness.
(9). Inspect fan mounting brackets for
cracks. Repair or replace as required.
(10). Inspect electrical connector for corro
sion. Verify fan for two-speed opera
tion.
(11). Inspect air plenum duct assemblies for
cracks, tears, deterioration, deforma
tion and security. Repair or replace as
required.
(12). Inspect distribution flexible ducts for
cuts, deterioration and collapsed nylon
coiled supports. Repair or replace as
required.
(13). Inspect door pillar plenum duct for
cracks. Repair or replace as required.
(14). Inspect crew compartment gasper
assemblies for cracks, cylindrical disc,
cap and ball socket for freedom of
operation. Repair or replace as re
quired.
(15). Inspect cabin compartment gasper
assemblies for cracks, cylindrical disc,
cap and ball socket for freedom of
operation. Repair or replace as re
quired.
(16). Install cabin compartment interior roof
panels (Ref. Section 25-20-00).
(17). Close right-hand forward access door
assembly R155 and transmission access
door assembly R210 (Ref. Section
06-00-00).
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