SERVICE BULLETIN

SB369E-108R1
SB369F-094R1
SERVICE BULLETIN
MANDATORY
MANDATORY
DATE: 5 MAY 2015
PAGE 1 OF 10
MANDATORY
* Supersedes Service Bulletins SB369E-108 and SB369F-094, dated 14 May 2013. Revised to
change serial number effectivity in Paragraph 1.A., Aircraft Affected, to clarify the Warranty
Policy, and to add the anti-collision light support assembly (Part No. 369D23660-7).
AFT POSITION AND ANTI−COLLISION LIGHT MOUNTING
INSPECTION, REPLACEMENT AND REPAIR
1. PLANNING INFORMATION
A. Aircraft Affected:
MD Helicopters Inc. (MDHI) Model 369E Helicopters, serial numbers 0608E thru 0621E
and Model 369FF Helicopters, serial numbers 0186FF thru 0250FF.
B. Assembly/Components Affected By This Notice:
Position Light Mounting Bracket Assembly, Part No. (PN) 369D23662-11
Anti-Collision Light Support Assembly, PN 369D23660-5
C. Reason:
The aft position light mounting bracket assembly is experiencing fatigue cracking due to
increased weight of LED position light.
The rivets of the anti-collision light support assembly may shear or pull through the
mounting bracket and/or shear.
Failure to comply with this bulletin may result in aft position light and anti-collision light
LED assemblies breaking off of the aircraft resulting in damage to the tail rotor and
possible loss of directional control.
D. Description:
Procedures in this Bulletin give owners and operators information to replace the aft
position light mounting bracket assembly and inspect and repair the anti-collision light
support assembly.
E. Time of Compliance:
Compliance with this bulletin must be completed within the next 10 flight hours after you
get this bulletin.
F. FAA Approval:
The technical design aspects of this Bulletin are FAA Approved.
G. Manpower:
Compliance with this bulletin will be approximately one half (0.5) man-hours to inspect the
aft anti-collision light support assembly on the aircraft. Three and one half (3.5)
man-hours to replace the position light bracket assembly and two (2.0) man-hours to
repair the anti-collision light support assembly.
H. Interchangeability:
None.
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.
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SB369E-108R1
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DATE: 5 MAY 2015
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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 Warranty Department to order required items
REPLACEMENT PARTS/SUPPLIES
Nomenclature
Part No.
Qty.
Source
Aft Position Light Mounting Bracket Assembly
369D23662−13
1
MDHI
Anti−Collision Light Support Assembly
369D23660−7
1
MDHI
Electrical Sleeving
MIL-I-3190/6
RM011067
AR
Commercial
MDHI
Knife Splice Terminal
32446
2
Commercial
MDHI
Permanent Ink Marker
Sharpie 13601 or 32001
AR
Commercial
Primer
MIL−P−85582, T1, C2
MIL−P−23377, T1, C
AR
Commercial
Rivet, Blind
NAS1919B04−04
4
MDHI
Rivet, Solid Universal Head
MS20470AD3−3−5
3
MDHI
Rivet, Solid, Countersunk
NAS1097AD4−3
10
MDHI
Sealing Compound
Pro−Seal 890 B2
AR
Commercial
K. Warranty Policy:
MDHI will provide parts listed in table Replacement Parts/Supplies at NO cost.
MDHI will also allow a Labor Credit as follows:
S One half (0.5) man-hours for the initial on-aircraft inspection.
S Three and one half (3.5) man-hours for the replacement of each installed position light
mounting bracket assembly.
S Two (2) man-hours for the repair of each installed anti-collision light assembly.
Customers must submit a completed SOR in order to receive these parts per this Service
Bulletin.
Additional discrepancies found over and above the specified warranty coverage are the
responsibility of the customer.
L. Disposition of Parts Removed:
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.
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SB369E-108R1
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DATE: 5 MAY 2015
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M. Weight and Balance:
N/A
N. Electrical Load Data:
N/A
O. Other Publications Affected:
CSP-IPC-4, Illustrated Parts Catalog
P. Reference Publications:
Refer to the latest revision of this publication for procedures and additional information:
CSP-HMI-2, Basic Handbook of Maintenance Instructions - Servicing and Maintenance
CSP-HMI-3, Basic Handbook of Maintenance Instructions - Instruments Electrical
Avionics
2. ACCOMPLISHMENT INSTRUCTIONS
(Ref. Figure 1)
A. [Part 1] Inspection
(1). Remove the anti-collision light (ref. CSP-HMI-3, Section 96-40-00) and examine the
anti-collision light support assembly for pulled through or sheared rivets.
(a). Make sure the five rivets on each side of the anti-collision support light assembly
are countersunk and flush.
(b). If the rivets show signs of pulling through the support assembly or shearing, do
Procedure C.
(2). Do an inspection of anti-collision support light assembly, PN 369D23660-5, for the
installation of ten MS20426AD3 rivets.
(a). If there are MS20426AD3 rivets, do Procedure C.
B. [Part 2] Replacement of Aft Position Light Mounting Bracket
(1). If installed, remove horizontal stabilizer (ref. CSP-HMI-2, Section 53-50-10).
(2). Remove aft position light.
(a). Disconnect knife splice terminals.
(b). Cut off knife splice terminals from wires.
(c). Pull wires thru horizontal stabilizer.
(d). Remove four screws on aft position light and retain all hardware and gaskets.
(e). Remove aft position light from aft position light mounting bracket assembly.
NOTE: For Step (3). thru Step (9). keep the trailing edge of the horizontal stabilizer facing down.
(3). Remove aft position light mounting bracket assembly.
(a). Remove four forward rivets by drilling the rivet head only with a #30 drill.
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
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SB369E-108R1
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DATE: 5 MAY 2015
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HORIZONTAL
STABILIZER
32446
KNIFE SPLICE
TERMINAL
(2 PL)
03-9250-0003
GASKET
03-9250-0002
RETAINER
91-0102-0513
SCREW (4 PL)
VERTICAL
STABILIZER
NAS601-7
SCREW
NAS1097AD4-3
COUNTERSUNK
RIVET (10 PL)
(5 EACH SIDE)
369D23660
ANTI-COLLISION LIGHT
SUPPORT ASSEMBLY
COUNTERSINK
SIDE (REF)
MS20470AD3-3-5
RIVET (3 PL)
AN960-6
WASHER
NAS1919B04-4
RIVET (4 PL)
369D23662-13
POSITION LIGHT
BRACKET ASSEMBLY
AN960-6
WASHER
MS20470AD2
SELF-LOCKING
NUT
88-827
Figure 1. LED Position and Anti-Collision Mount Assemblies
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
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SB369E-108R1
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DATE: 5 MAY 2015
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(b). Use a small drift to tap the remaining part of rivet into the horizontal stabilizer.
(c). Remove three trailing edge rivets by drilling the rivet head only with a # 40 drill.
(d). Use a small drift to tap the remaining part of rivet out of the horizontal stabilizer.
(e). Remove one screw, two washers and one self-locking nut. Retain hardware.
(4). Inspect rivet holes for cracks and oversize.
(a). If cracked or oversize contact MDHI Field Service.
(5). Insert Pro-Seal 890 B-2 sealing compound (approximately ⅛ ounce) into open rivet
holes to contain rivet pieces.
(6). Shake horizontal stabilizer until rivet pieces are secured in sealing compound.
(7). Apply corrosion protection to the rivet holes (ref. CSP-HMI-2, Chapter 20-40-00).
(8). Use Cleco fasteners to hold position light mounting bracket 369D23662-13 in the
correct position.
(9). Wet install seven rivets with primer.
(10). Install one screw, two washers and one self-locking nut.
(11). Install aft position light:
(a). Install aft position light into aft mounting bracket assembly.
(b). Install gasket, retainer and four screws on aft position light.
(c). Pull wiring thru horizontal stabilizer.
(d). Install electrical sleeving over wires.
(e). Install knife splice terminals onto wires.
(f). Connect knife splice terminals.
(g). Pull electrical sleeving over knife splice terminals and zip-ty ends.
(12). Reinstall horizontal stabilizer (ref. CSP-HMI-2, Section 53-50-10).
C. [Part 3] Repair of Anti-Collision Support Assembly
(1). Remove anti-collision light (ref. CSP-HMI-3, Section 96-40-00).
(2). Remove ten (10) rivets from anti-collision light support assembly with a # 40 drill.
(3). Inspect rivet holes for cracks.
(a). If there is a crack, contact MDHI Field Service.
(4). Enlarge the rivet holes with a #30 drill.
(5). Deburr the rivet holes.
(6). Apply corrosion protection to the rivet holes (ref. CSP-HMI-2, Section 20-40-00).
(7). Wet install ten (10) NAS1097AD4-3 rivets in anti-collision light support assembly with
primer.
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
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SB369E-108R1
SB369F-094R1
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DATE: 5 MAY 2015
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(8). As necessary, do a touchup of the paint (ref. CSP-HMI-2, Section 20-30-00).
(9). Identify the anti-collision light support assembly as 369D23660-7 with a permanent
ink marker.
(10). Install the anti-collision light on the support assembly with two (2) new self-locking
nuts (ref. CSP-HMI-3, Section 96-40-00).
D. Compliance Record
(1). Record compliance to this Service Bulletin in the Compliance Record section of the
Rotorcraft Log Book.
(2). Complete the Bulletin Completed Record forms (attached) and FAX or e-mail them to
the MHDI 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
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SB369E-108R1
SB369F-094R1
SERVICE BULLETIN
MANDATORY
DATE: 5 MAY 2015
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Bulletin Completed Record
[Part 1] SUPPORT ASSEMBLY, ANTI−COLLISION LIGHT INSPECTION
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 ServiceEngineering@mdhelicopters.com
Owner
/Operator:
Helicopter
Serial No:
Address:
Helicopter
Total Time:
Date Complete:
Location:
Phone:
E−mail:
[Part 1 of 3] This bulletin
is complete:
(Signature)
Part 3: Required: Y / N
(circle one)
(Print Name)
(Title)
Serial Number of tailboom:
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
SB369E-108R1
SB369F-094R1
SERVICE BULLETIN
DATE: 5 MAY 2015
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Bulletin Completed Record
[Part 2] BRACKET ASSEMBLY, MOUNTING AFT POSITION LIGHT
REPLACEMENT
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 ServiceEngineering@mdhelicopters.com
Owner
/Operator:
Helicopter
Serial No:
Address:
Helicopter
Total Time:
Date Complete:
Location:
Phone:
E−mail:
[Part 2 of 3] This bulletin
is complete:
(Signature)
(Print Name)
(Title)
Serial Number of modified tailboom:
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
SB369E-108R1
SB369F-094R1
SERVICE BULLETIN
MANDATORY
DATE: 5 MAY 2015
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Bulletin Completed Record
[Part 3] SUPPORT ASSEMBLY, ANTI−COLLISION LIGHT REPAIR
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 ServiceEngineering@mdhelicopters.com
Owner
/Operator:
Helicopter
Serial No:
Address:
Helicopter
Total Time:
Date Complete:
Location:
Phone:
E−mail:
[Part 3 of 3] This bulletin
is complete:
(Signature)
(Print Name)
(Title)
Serial Number of modified tailboom:
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
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DATE: 5 MAY 2015
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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.
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