Revision - MD Helicopters MD Explorer Servicing And Maintenance

CSP−900RMM−2
C. Engine Conversion Modification from
PW206A or PW206E to PW207E
MD Helicopters, Incorporated (MDHI) has
received FAA approval of a change to the
MD900 Type Design, which authorizes the
installation of PW207E engines into existing
PW206A-engined MD900 helicopters, serial
numbers 900-00010 through 900-00051 and
PW206E-engined MD900 helicopters, serial
numbers 900-00052 through 900-00076,
900-00079, 900-00080. The FAA authoriza­
tion is published as a note in the H19NM Type
Certificate Data Sheet (TCDS).
Any eligible MD900 helicopter with PW206A
or PW206E Engines configuration, once
converted, meets the MD900 with PW207E
Engines configuration Type Design.
Completion of the conversion is not a helicop­
ter model change and does not affect the
applicability of previously issued Airworthi­
ness Directives.
MDHI is the only maintenance facility
permitted to perform the conversion.
Helicopters converted to the MD900 with
PW207E Engines configuration will use the
existing MD900 Maintenance Publications in
addition to the appropriate Rotorcraft Flight
Manual listed in Directives and Related
Manufacturers Publications (Ref. Table 201).
The maintenance, troubleshooting and
inspection procedures contained in the existing
MD900 Maintenance Publications,
CSP-900RMM-2 and CSP-900RMM-3, are
not affected by this conversion. The manuals
already contain the various configuration
differences identified with 900 CONFIG or 902
CONFIG for the airframe items and PW206A,
PW206E OR PW207E for engine configuration
differences. The Illustrated Parts List
CSP-900IPL-4 also reflects the differences.
Existing MD900 Service Letters and Technical
Bulletins are still applicable for the helicopter,
as required. New Service Bulletins and ADs
for the MD900 are applicable, as required.
Page 2

Revision 14

MD Helicopters, Inc.
Rotorcraft Maintenance Manual
01-00-00
900 CONFIG - PW207E Engine conversion
- For non-Category A helicopters (S/N 10-51)
900 CONFIG with PW206A engines converted
to PW207E engines, the helicopter is main­
tained in accordance with the PW207E engine
and 900 CONFIG procedures except for the
items listed below;
D NACA inlet installed.
D EEC Pedal anticipators (use 902 CONFIG).
D Nr Beep Switch removed.
D 900 CONFIG Fuel tank with 902 CONFIG
Engine fuel supply lines.
D Fuel boost pump outlet fitting installed.
D Fuel crossfeed system and the associated
fuel tank pump outlet check valves are
removed (use 902 CONFIG).
D XFEED switch and XFEED circuit breaker
are removed.
D Left FUEL low tic mark on the IIDS does
not operate (#1 fuel quantity sensor is not
installed).
D Engine combustor wet fuel drain line ( and
fuel catch-can option) are not installed (use
PW207E).
D PW207E Engine feed hose, engine feed hose
shrouding, and engine FMU shrouding (use
902 CONFIG).
D Fuel system electrical (use 902 CONFIG).
902 CONFIG - PW207E Engine conversion
- For Category A helicopters (S/N 0052 thru
0076, 0079, 0080) 902 CONFIG with PW206E
engines converted to PW207E engines, there is
no difference between the converted helicopter
and the production 902 CONFIG with
PW207E engines. The converted helicopter is
maintained as a 902 CONFIG with PW207E
engines.