Description And Operation; Principal Dimensions; Fuselage Stations, Waterlines, And Butt Lines; Fuselage Stations - MD Helicopters MD Explorer Servicing And Maintenance

1. Principal Dimensions

(Ref. Figure 201)
Principal dimensions of the helicopter with
skid landing gear are shown in Figure 201. All
height dimensions must be considered
approximate, due to loading variations
resulting in skid deflection. Ground handling
equipment installed on the skid gear will
increase the height approximately five inches.
Dimensions are given in feet (ft) and meters
(m) to accommodate international owners/op­
erators.
2. Fuselage Stations, Waterlines, and Butt
Lines
(Ref. Figure 202)
All dimensions shown in inches, are from
reference points designated as fuselage station
0.00, waterline 0.00, and butt line 0.00.
A. Fuselage Stations
Fuselage stations (FS) are measured aft from
fuselage station 0.00 along the longitudinal
axis of the helicopter fuselage. FS 0.00 is
located 75.43 inches (191.59 cm) forward of
the helicopter nose. The 0.00 location is also
known as the reference datum line necessary
for weight and balance procedures.
B. Waterlines
Waterlines (WL) are horizontal planes
perpendicular to, and measured along the
vertical axis of the helicopter. WL 0.00 is
located 106.0 inches (269.24 cm) below the
cabin floor.
C. Butt Lines
Butt lines (BL) are vertical planes perpendicu­
lar to, and measured to the left and right along
the lateral axis of the helicopter. BL 0.00 is the
plane at the vertical centerline of the helicop­
ter.
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
DIMENSIONS AND AREAS

DESCRIPTION AND OPERATION

3. Inspection Areas

(Ref. Figure 203)
The aircraft has been divided into seven
different inspection areas. Each area is
addressed independently by the 100-hour or
annual inspection and the continuous airwor­
thiness maintenance program.

4. Access Methods

(Ref. Figure 204)
Doors, covers, panels, and fairings are located
through out the airframe to provide access for
inspection, maintenance, and servicing.
Figure 204 is related to corresponding Figures
which list an access item number, access panel
names, what the panel permits access to,
fastener quantity, fastener type, and fastener
access method.
A. Access Item Number
Access Item Numbers indicate the nearest
attaching fuselage station. External and
internal doors, covers, panels and fairings are
shown in Figure 205 through Figure 213. Each
door, cover, panel, and fairing has an item
number designator letter and a number
designator.
(1). The letter indicates the location:
(N) Nose
(L) Left Side
(R) Right Side
(T) Top Side
(B) Bottom Side
(A) Cabin Floor (interior access)
(S) Stabilizer
(P) Pedestal (interior)
(F) Fan Assembly (interior)
(2). A combination of two letters may be
used to help identify a door, cover, panel
or fairing:
(PR) Pedestal Right
(PL) Pedestal Left
(3). L or R indicate doors, panels, and
covers at the same station location:
P(L/R)120.0.
06-00-00
CSP−900RMM−2
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