SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 1 OF 14
MANDATORY
* Supersedes Service Bulletin SB369D-214R1, SB369E-110R1, SB369F-096R1, SB500N-050R1,
and SB600N-060R1, dated 11 September 2014. Revised to change the warranty policy and the
inspection procedures. Helicopters that have completed the Initial Issue or Revision 1 of
SB369D-214, SB369E-110, SB369F-096, SB500N-050, or SB600N-060 and meet the intent of
this revision have no additional action.
INSPECTION OF THE COPILOT GAS PRODUCER
CONTROL GEAR SHAFT ASSEMBLY
1. PLANNING INFORMATION
A. Aircraft Affected:
369D, 369E, 369FF, 500N, and 600N helicopters with a left-hand (LH) command
configuration:
369E helicopters, serial numbers (SNs) 0001E thru 0616E with LH command.
369FF helicopters, SNs 0001FF thru 0209FF, 0600FF thru 0602FF, 0700FF thru 0711FF
with LH command.
500N helicopters, SNs LN001 thru LN109 with LH command.
600N helicopters, SNs RN003 thru RN080 with LH command.
NOTE: Ref. SB600N-058R1 for 600N helicopters with right-hand (RH) command.
B. Assemblies / Components / Spares Affected By This Notice:
369A7336-503 / 369A7336A503 Pilot Gas Control Producer Control Gear Shaft Assembly;
and all assemblies in spares inventory.
C. Reason:
Copilot gear shaft assemblies have been found without the required Loctite® R/C #35 on
the shaft and gear, which can cause the spring pins to loosen and fall out.
NOTE: The throttle control of the pilot continues to be operational.
Failure to comply with this bulletin can result in a loss of copilot throttle control and a
precautionary landing.
D. Description:
Procedures in this Bulletin give owners and operators information to do the disassembly,
inspection, and re-assembly to make sure the gear and shaft are correctly assembled.
E. Time of Compliance:
The instructions in this bulletin must be completed at the next 100-hour or annual
inspection.
F. FAA Approval:
The technical design aspects of this bulletin are FAA Approved.
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
SERVICE BULLETIN
DATE: 30 MARCH 2015
PAGE 2 OF 14
MANDATORY
MANDATORY
MANDATORY
G. Manpower:
Compliance with this bulletin will be approximately 1 (one) to 4 (four) man-hours.
H. Interchangeability:
None.
I. Points of Contact:
For further assistance, contact the Field Service Department at MDHI, Mesa, Arizona.
Telephone 1-800-388-3378 or 480-346-6387. DATAFAX: 480-346-6813.
J. Material/Part Availability:
Contact MDHI Spare Parts Sales Department for parts availability.
Telephone: 1-800-388-3378 Option 2 or 480-346-6540. DATAFAX: 480-346-6821.
REPLACEMENT PARTS/SUPPLIES
Nomenclature
Part No.
Gear Shaft Assembly, Pilot
Control Gas Producer
369A7336−503 or
369A7336A503
Grease, Aircraft and Instrument
(CM116)
MIL−G−23827
Qty.
1
AR
Source
MDHI
Commercial
K. Warranty Policy:
Warranty coverage is inclusive of copilot gear shaft assembly replacement (ref.
Replacement Parts/Supplies Table of Section 1.J. herein). Additional discrepancies found,
other than the missing Loctite R/C #35, is the responsibility of the customer.
MDHI Warranty Department will give authorized Service Centers not more than one (1)
hour of labor (spares) credit) to complete the visual inspection and four (4) hours of labor
(spares) credit if there is no Loctite.
L. Disposition of Parts Removed:
Return to MDHI with a completed Service Operational Report (SOR).
M. Tooling:
Ref. CSP-HMI-2, Section 91-00-00, for the item and manufacturer / supplier numbers.
TOOLS AND EQUIPMENT
Nomenclature (Item)
Collective Bungee Installation Tool (ST508)
Source (Manufacturer / Supplier)
MDHI (TS10)
N. Weight and Balance:
N/A
O. Electrical Load Data:
N/A
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 3 OF 14
MANDATORY
P. Other Publications Affected:
CSP-RLB Rotorcraft Log Book
CSP-HMI-2 Basic Handbook of Maintenance Instructions - Servicing and Maintenance
Q. Reference Publications:
Refer to the latest revision of these publications for procedures and additional information:
CSP-RLB Rotorcraft Log Book
CSP-D-1 Rotorcraft Flight Manual
CSP-E-1 Rotorcraft Flight Manual
CSP-FF-1 Rotorcraft Flight Manual
CSP-520N-1 Rotorcraft Flight Manual
CSP-600N-1 Rotorcraft Flight Manual
CSP-HMI-2 Basic Handbook of Maintenance Instructions - Servicing and Maintenance
CSP-IPC-4 Illustrated Parts Catalog
2. ACCOMPLISHMENT INSTRUCTIONS
A. Checks for Loctite
(Ref. Figure 1)
(1). Do an inspection for the installation of PN 369A7336-501 gear shaft assembly (1):
NOTE: The -501 gear shaft is not installed on Model 600N helicopters. The -501 gear shaft
assembly is not affected by this service bulletin.
(a). As necessary, get access to the center flight controls.
(b). Examine with a strong light and a mirror or a borescope the right-side end of gear
shaft assembly (1) along bellcrank (33) and housing cap (45) for a cotter pin that
holds the shaft and gear together.
1). The cotter pin will be visible inside the shaft.
2). If there is a cotter pin, make an entry in the Rotorcraft Log Book to record the
installation of PN 369A7336-501 gear shaft assembly and return the helicopter
to service.
3). If there is no cotter pin, go to the next step.
(2). Do an inspection for PN 369A7336-503 gear shaft assembly (1):
(a). If installed, hold the collective grip on the right-hand collective pitch stick while
another technician turns the collective grip on the left-hand collective pitch stick.
1). If both pins have fallen out of gear shaft assembly (1), the right-hand collective
grip will not move.
a). If the right-hand collective grip did not move, do procedures 2.B., 2.E., and
2.G. for the 369D, 369E, 369FF, and 500N models, and procedures 2.C., 2.F.,
and 2.G. for the 600N Model.
b). If the right-hand collective grip did move, go to the next step.
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
SERVICE BULLETIN
DATE: 30 MARCH 2015
PAGE 4 OF 14
MANDATORY
MANDATORY
MANDATORY
41
40
47
44
14
13
17
16
6
15
28
8
29
7
9
11
18
19
9
10
5
12
9
2
8
3
4
7
49
1
46
34
39
36
35
42
43
48
45
25
37
30
36
INSPECTION
36
31
37
COTTER
PIN
38
35
36
27
23
33 31
32
34
-501 ONLY
ROTATED 180 5
22
28
26
21
20
24
88-834
22
Figure 1. Removal and Assembly of the
(369D, 369E, 369FF, 500N) Copilot Gas Producer Control Gear Shaft Assembly
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 5 OF 14
MANDATORY
MANDATORY
Legend (Ref. Figure 1)
1.
GEAR SHAFT ASSEMBLY (REF. IPC, 67−10−00, FIG. 6)
26.
COTTER PIN
2.
HOUSING
27.
NUT
3.
COLLECTIVE BUNGEE (REF. IPC, 67−10−00, FIG. 10)
28.
WASHER
4.
COLLECTIVE BUNGEE INSTALLATION TOOL (ST508)
29.
BOLT
5.
OVERCENTER SUPPORT BRACKET
30.
NUT
6.
BUNGEE SUPPORT BRACKET
31.
WASHER
7.
COTTER PIN
32.
BOLT
8.
NUT
33.
BELLCRANK
9.
WASHER
34.
COTTER PIN
10.
BUSHING
35.
NUT
11.
BOLT
36.
WASHER
12.
BOLT
37.
BOLT
13.
CONTROL ROD (REF. IPC, 67−00−00, FIG. 2)
38.
ACTUATOR CAM
14.
COTTER PIN
39.
LINK
15.
NUT
40.
NUT
16.
WASHER
41.
WASHER
17.
BUSHING
42.
WASHER
18.
WASHER
43.
BOLT
19.
BOLT
44.
TORQUE TUBE (REF. IPC, 67−10−00, FIG. 10)
20.
COTTER PIN (REF. IPC, 76−20−00, FIG. 1)
45.
HOUSING CAP (REF. IPC, 67−10−00, FIG. 6)
NR DISABLE SWITCH AND BRACKET
21.
NUT
46.
22.
WASHER
47.
PIPE PLUG (FIG. IPC, 67−10−00, 10)
23.
BOLT
48.
BACKLASH SHIM (FIG. IPC, 67−10−00, 6)
24.
ENGINE CONTROL ROD
49.
N1 PINION GEAR
25.
IDLER (REF. IPC, 67−10−00, FIG. 6)
(3). Remove components as necessary to get to the Controls Access Door on the aft side of
Station 78.50 (ref. CSP-HMI-2, Section 52-50-00).
(4). Remove the Controls Access Door.
(5). Examine gear shaft assembly (1) with a strong light and a mirror or a borescope for
Loctite (ref. Figure 1 and Figure 2).
NOTE: The gear shaft assembly is located in housing (2). Loctite will show as a blue-to-green
stripe of color past the brass-color gears on the grey-color shaft.
(a). If there is Loctite, there will be a blue to green sheen in the interface of the gear and
shaft (ref. Figure 3).
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 6 OF 14
MANDATORY
SERVICE BULLETIN
MANDATORY
MANDATORY
Do not use torque seal to make the slippage mark. Torque seal can get into gears,
bearings and shafts and damage the components.
CAUTION
(b). If you cannot see Loctite, put a slippage mark with a bright-colored indelible ink or
with a spot of white paint with a long brush on the gear and shaft of gear shaft
assembly (1).
NOTE: Use an indelible ink that will visibly contrast with the background color of the gear shaft
assembly.
1). Do a visual inspection at every 100-hour inspection to make sure the slippage
mark has not split.
a). If the slippage mark has split, replace gear shaft assembly (1).
(c). If there is Loctite, go to Procedure 2.G.(6).
B. Disassembly (Models 369D, 369E, 369FF, 500N)
(Ref. Figure 1)
(1). Do a check of the gas producer controls rigging before disassembly (ref. CSP-HMI-2,
Section 76-20-00).
(2). Make sure the throttle movement is smooth and moves freely.
(3). Apply friction to the pilot's throttle with the throttle in the OFF position.
(4). As necessary, get access to the center flight controls.
(5). Remove collective bungee (3) with ST508 collective bungee installation tool (4) (ref.
CSP-HMI-2, Section 67-10-00, Removal / Installation, Procedure 11.A.).
NOTE: Do not remove overcenter support bracket (5) or bungee support bracket (6) and do not
disassemble collective bungee (3).
CAUTION
Protect collective mixer control rod (13) after it is disconnected from housing (2) to
prevent damage.
(6). Disconnect control rod (13) from housing (2) (ref. CSP-HMI-2, Section 67-10-00,
Removal / Installation, Procedure 1.A.).
NOTE: Do not remove control rod (13).
(7). Do the Inboard Collective Stick Socket Assembly Removal procedure (ref. CSP-HMI-2,
Section 67-10-00, Removal / Installation, Procedure 12.A.).
(8). Remove cotter pin (20), nut (21), washers (22), and bolt (23) from the rod end bearing of
engine control rod (24) and idler (25).
(a). Discard cotter pin (20).
(9). Remove cotter pin (26), nut (27), washers (28), and bolt (29) from housing (2) and idler
(25).
(a). Discard cotter pin (26).
(10). Remove nut (30), washers (31), and bolt (32) from bellcrank (33) and gear shaft assem
bly (1).
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 7 OF 14
MANDATORY
(11). Remove cotter pins (34), nuts (35), washers (36), and bolts (37) from idler (25), bellcrank
(33), actuator cam (38) and link (39).
(a). Discard cotter pin (34).
(12). Remove nuts (40), washers (41, 42), and bolts (43) from torque tube (44) from housing
(2), housing cap (45), and NR disable switch and bracket (46).
(13). Find pipe plug (47) that attaches gear shaft assembly (1) to the pilot's gas producer
interconnect torque tube and copilot's collective stick.
(14). Have an assistant hold the gear shaft assembly.
NOTE: Use an 7/16-inch Allen wrench on the pilot's gear shaft inside the shaft hexagon, not the pipe
plug. Use a 3/16-inch Allen wrench on the pipe plug.
(15). Carefully loosen the pilot's stick pipe plug to remove tension.
(16). After the pipe plug is loose, remove housing (2).
CAUTION
Make sure the location of each backlash shim is recorded for re-assembly.
(17). Record the locations of the backlash shims (48) on gear shaft assembly (1).
(18). Remove backlash shims (48).
(19). Take housing (2) to a workbench.
(20). Turn housing (2) so that the cutout of the ring gear of the gear shaft assembly (1) will go
around N1 pinion gear (49).
(21). Remove gear shaft assembly (1) from housing (2).
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
SERVICE BULLETIN
DATE: 30 MARCH 2015
PAGE 8 OF 14
MANDATORY
MANDATORY
MANDATORY
30
29
33
6
14
13
17
15
16
8
7
36
9
11
9
10
18
19
5
37
12
9
34
31
38
2
32
3
4
7
8
1
27
20
26
15
27
28
25
22
21
23
22
24
20
35
88-831
Figure 2. Removal and Assembly of the
600N Copilot Gas Producer Control Gear Shaft Assembly
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 9 OF 14
MANDATORY
MANDATORY
Legend (Ref. Figure 2)
1.
GEAR SHAFT ASSEMBLY (REF. IPC, 67−10−00, FIG. 3)
20.
COTTER PIN (REF. IPC, 76−20−60, FIG. 1)
2.
HOUSING
21.
NUT
3.
COLLECTIVE BUNGEE (REF. IPC, 67−10−00, FIG. 10)
22.
WASHER
4.
COLLECTIVE BUNGEE INSTALLATION TOOL (ST508)
23.
BOLT
5.
OVERCENTER SUPPORT BRACKET
24.
ENGINE CONTROL ROD
6.
BUNGEE SUPPORT BRACKET
25.
BELLCRANK
7.
COTTER PIN
26.
NUT
8.
NUT
27.
WASHER
9.
WASHER
28.
BOLT
10.
BUSHING
29.
NUT (REF. IPC, 67−10−00, FIG. 3)
11.
BOLT
30.
WASHER
12.
BOLT
31.
WASHER
13.
CONTROL ROD (REF. IPC, 67−00−00, FIG. 2)
32.
BOLT
14.
COTTER PIN
33.
TORQUE TUBE (REF. IPC 67−10−00, FIG. 10)
15.
NUT
34.
HOUSING CAP (REF. IPC, 67−10−00, FIG. 3)
16.
WASHER
35.
BRACKET
17.
SPACER
36.
PIPE PLUG (REF. 67−10−00, FIG. 10)
18.
WASHER
37.
BACKLASH SHIM (REF. IPC, 67−10−00, FIG. 3)
19.
BOLT
38.
N1 PINION GEAR
C. Disassembly (Model 600N)
(Ref. Figure 2)
(1). Do a check of the gas producer controls rigging before disassembly (ref. CSP-HMI-2,
Section 72-20-00).
(2). Make sure the throttle movement is smooth and moves freely.
(3). Apply friction to the pilot's throttle with the throttle in the OFF position.
(4). Remove the pilot's seat cover to get access to the center flight controls.
(5). Remove collective bungee (3) with ST508 collective bungee installation tool (4) (ref.
CSP-HMI-2, Section 67-10-00, Removal / Installation, Procedure 11.A.).
NOTE: Do not remove overcenter support bracket (5) or bungee support bracket (6) and do not
disassemble collective bungee (3).
CAUTION
Protect collective mixer control rod (13) after it is disconnected from housing (2) to
prevent damage.
(6). Disconnect control rod (13) from housing (2) (ref. CSP-HMI-2, Section 67-10-00,
Removal / Installation, Procedure 1.A.).
NOTE: Do not remove the collective mixer control rod.
(7). Do the Inboard Collective Stick Socket Assembly Removal procedure (ref. CSP-HMI-2,
Section 67-10-00, Removal / Installation, Procedure 12.A.).
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 10 OF 14
MANDATORY
SERVICE BULLETIN
MANDATORY
MANDATORY
EXAMINE THE
GEAR AND SHAFT
INTERFACE
88-830
Figure 3. Inspection of the Gear Shaft Assembly
(8). Remove cotter pin (20), nut (21), washers (22), and bolt (23) from the rod end bearing of
the engine control rod (24) and bellcrank (25).
(9). Remove nut (26), washers (27), bolt (28), and bellcrank (25) from gear shaft assembly
(1).
(10). Remove nuts (29), washers (30, 31), bolts (32), from collective control torque tube (33),
housing (2), housing cap (34), and bracket (35)
(11). Find pipe plug (36) that attaches gear shaft assembly (1) to the pilot's gas producer
interconnect torque tube and copilot's collective stick.
(12). Have an assistant hold the gear shaft assembly.
NOTE: Use an 7/16-inch Allen wrench on the pilot's gear shaft inside the shaft hexagon, not the pipe
plug. Use a 3/16-inch Allen wrench on the pipe plug.
(13). Carefully loosen the pilot's stick pipe plug to remove tension.
(14). After the pipe plug is loose, remove housing (2).
CAUTION
Make sure the location of each backlash shim is recorded for re-assembly.
(15). Record the locations of the backlash shims (37) on gear shaft assembly (1).
(16). Remove backlash shims (37).
(17). Take housing (2) to a workbench.
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 11 OF 14
MANDATORY
(18). Turn housing (2) so that the cutout of the ring gear of the gear shaft assembly (1) will go
around N1 pinion gear (38).
(19). Remove gear shaft assembly (1) from housing (2).
D. Deleted (Ref. Procedure 2.A.)
E. Assembly (Models 369D, 369E, 369FF, 500N)
(Ref. Figure 1)
(1). Install the gear shaft assembly:
(a). Install backlash shims (48) in their original positions.
(b). Apply a small quantity of grease (CM116) to the gears of gear shaft assembly (1).
(c). Install assembled gear shaft assembly (1, 48) in housing (2).
(d). Turn gear shaft assembly (1) to let the cutout go by the N1 pinion gear (49).
(e). Release friction from the pilot's throttle with the throttle in the OFF position.
(f). Fully turn gear shaft assembly (1) to apply the grease on its gear and the N1 pinion
gear (48).
NOTE: The cutout of the gear shaft assembly will face aft.
(g). Turn gear shaft assembly (1) to engage the N1 pinion gear (49) at the same position
observed during disassembly.
(2). Install housing (2) on torque tube (44) with housing cap (45), NR disable switch and
bracket (46), washers (41, 42), bolts (43), and nuts (40).
(3). Install bellcrank (33) on gear shaft assembly (1) with washers (31), bolt (32), and nut
(30).
(4). Install idler (25), bellcrank (33), actuator cam (38) and link (39) with washers (36),
bolts (37), nuts (35), and cotter pins (34).
(5). Engage pipe plug (47) with an Allen wrench to tighten the pilot's and copilot's pipe plugs
at the same time.
(6). Remove protective materials from control rod (13).
(7). Connect control rod (13) to housing (2) (ref. CSP-HMI-2, Section 67-10-00, Removal /
Installation, Procedure 1.B.).
(8). Install collective bungee (3) with ST508 collective bungee installation tool (4) (ref.
CSP-HMI-2, Section 67-10-00, Removal / Installation, Procedure 11.B.).
F. Assembly (Model 600N)
(Ref. Figure 2)
(1). Install the gear shaft assembly:
(a). Install backlash shims (37) in their original positions.
(b). Apply a small quantity of grease (CM116) to the gears of gear shaft assembly (1).
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 12 OF 14
MANDATORY
SERVICE BULLETIN
MANDATORY
MANDATORY
(c). Install assembled gear shaft assembly (1, 37) in housing (2).
(d). Turn gear shaft assembly (1) to let the cutout go by the N1 pinion gear (38).
(e). Release friction from the pilot's throttle with the throttle in the OFF position.
(f). Fully turn gear shaft assembly (1) to apply the grease on its gear and the N1 pinion
gear (38).
NOTE: The cutout of the gear shaft assembly will face aft.
(g). Turn gear shaft assembly (1) to engage the N1 pinion gear (38) at the same position
observed during disassembly.
(2). Install housing (2) on torque tube (33) with housing cap (34), bracket (35), washers (30,
31), bolts (32), and nuts (29).
(3). Install bellcrank (25) on gear shaft assembly (1) with washers (27), bolt (28), and nut
(26).
(4). Engage pipe plug (36) with an Allen wrench to tighten the pilot's and copilot's pipe plugs
at the same time.
(5). Connect control rod (13) to housing (2) (ref. CSP-HMI-2, Section 67-10-00, Removal /
Installation, Procedure 1.B.).
(6). Install collective bungee (3) with ST508 collective bungee installation tool (4) (ref.
CSP-HMI-2, Section 67-10-00, Removal / Installation, Procedure 11.B.).
G. Job Close-Up
(1). Do the Inboard Collective Stick Socket Assembly Installation procedure (ref. CSPHMI-2, Section 67-10-00, Removal / Installation, Procedure 12.B).
(2). Turn the copilot's throttle.
(a). The throttle must be smooth and does not catch.
(3). As you hold the pilot's throttle grip to prevent movement, do a check of the copilot's
throttle grip for movement.
(a). If there is movement, do the Gas Producer Interconnecting Torque Tube Assembly
Shimming (as applicable) (ref. CSP-HMI-2, Section 67-10-00, Adjustment / Test).
(b). If there is a loss of the range of movement, do the Gas Producer Interconnecting
Torque Tube Assembly Shimming (as applicable) (ref. CSP-HMI-2, Section
67-10-00, Adjustment / Test) or tighten the pipe plug.
(4). As you hold the copilot's throttle grip to prevent movement, do a check of the pilot's
throttle grip for movement.
(a). If there is movement, do the Gas Producer Interconnecting Torque Tube Assembly
Shimming (as applicable) (ref. CSP-HMI-2, Section 67-10-00, Adjustment / Test).
(b). If there is a loss of the range of movement, do the Gas Producer Interconnecting
Torque Tube Assembly Shimming (as applicable) (ref. CSP-HMI-2, Section
67-10-00, Adjustment / Test) or tighten the pipe plug.
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SERVICE BULLETIN
MANDATORY
MANDATORY
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 13 OF 14
MANDATORY
(5). Do a check of the pilot's and copilot's throttle:
(a). The throttle must be smooth and does not catch.
(b). If there is movement, do the Gas Producer Interconnecting Torque Tube Assembly
Shimming (as applicable) (ref. CSP-HMI-2, Section 67-10-00, Adjustment / Test).
(6). Install the pilot's seat cover.
(7). Install the Center Access Door.
(8). Do the throttle, hydro-mechanical unit (HMU), and control cable rigging procedures
before an engine start (ref. CSP-HMI-2, Chapter 76, applicable engine section).
(9). Do a check of the HMU stop, idle cutoff, and maximum stop positions during the
throttle checks before an engine start (ref. CSP-600RFM-1).
H. Compliance Record
(1). Install as necessary removed components.
(2). Record compliance to this Service Bulletin in the Compliance Record section of the
Rotorcraft Log Book.
(3). Complete Bulletin Completed Record form (attached) and FAX or e-mail to MDHI Field
Service Department.
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY
SB369D-214R2
SB369F-096R2
SB600N-060R2
SB369E-110R2
SB500N-050R2
DATE: 30 MARCH 2015
PAGE 14 OF 14
MANDATORY
SERVICE BULLETIN
MANDATORY
MANDATORY
SB369D−214R2 / SB369E−110R2 / SB369F−096R2 /
SB500N−050R2 / SB600N−060R2 Completion Record
Inspection of the Pilot Gas Producer Control Gear Shaft Assembly
MD Helicopters, Inc.
Field Service Department
4555 E. McDowell Road
Mesa, AZ 85215−9734
800−388−3378 Phone (U.S. and Canada)
480−346−6387 Phone (International)
480−346−6813 Fax
FAX this form to MDHI (480) 346−6813 or E−mail to [email protected]
Owner/−
Operator:
Helicopter
Serial No:
Address:
Helicopter
Total Time:
Date Complete:
Location:
Phone:
E−mail:
This bulletin is complete:
(Signature)
(Print Name)
(Title)
Comments:
Copyright 1999-2014 by MD Helicopters Inc.
This document may be reproduced and distributed provided no fee is charged,
the text is not modified, and this copyright notice is included.
MANDATORY
MANDATORY
MANDATORY