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# ....... HELICOPTERS SB369H-255 SB369E-111 SB500N-049 SB369D-213 SB369F-098 

# SERVICE BULLETIN DATE: 30 APRIL 2014 PAGE 1 OF 10 

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## ONE- TIME INSPECTION OF FUEL PUMP HARNESS ROUTING AND DECAL INSTALLATION * Supersedes Service Bulletin SB369HN-210 , SB369DN-150, SB369EN-38 , and SB369FN-27, dated 15 September 1987. Revised to the latest MD Helicopters, Inc

. (MDHI) style and format

. 

### 1. PLANNING INFORMATION A. Aircraft Mfected: All MD Helicopters, Inc. (MDHI) Model369A (0H-6A) , 369H, 369HE, 369HS, 369HM, AND 369D helicopters. MDHI Model 369E helicopters, SN 's 0001E thru 0620E. MDHI Model369F/FF helicopters, SN's 0001FF thru 0212FF, 0600FF thru 0602FF and 0700FF thru 0711FF with a PN 369A8143-3 auxiliary fuel pump installed. MDHI Model 500N helicopters , SN's LN001 thru LNOlll. 

### B. Assembly/Components Mfected 

### By This Notice: 369A8143 or 369A8143-3 Auxiliary Fuel Pump Assemblies

· 369A8113 LH Fuel Cell Fuel Inlet Hose Assembly C. Reason: Recent field incidents have occurred where maintenance personnel have not followed the procedures in CSP-H-2 or CSP-HMI-2 regarding the installation of the auxiliary fuel (start) pump. 

### An incorrectly positioned auxiliary fuel (start) pump wire can interfere with the fuel quantity sensor float. This interference can result in erroneous fuel quantity indications. To prevent this situation, the fuel pump wire must be wrapped around the fuel inlet hose as shown in the applicable maintenance manual. D. Description: Procedures in this bulletin give owners and operators information to do a one-time inspection of the auxiliary fuel pump assembly wire routing in the left hand fuel cell, and corrective action, if necessary. A decal is also installed on the LH fuel cell access cover that refers personnel to the procedures contained in the appropriate maintenance manual. E. Time of Compliance: The requirements of this bulletin must be completed no later than the next 100 hour inspection. F. FAA Approval: The technical design aspects of this bulletin are FAA Approved. G. Manpower: Compliance with this bulletin will be approximately three (3 ) man-hours to complete th e inspection and test and approximately one (1 ) man-hour to re-route th e auxiliary fuel pump wire if required. Copy rig h t 1 999

- 2 014 by MD He l ico p ters Inc. T

h is docu m ent may be re p roduce d and distributed p rovided l W fee is ch arged, th e tex t is not mo d ified, and th is copy righ t n otice is inc l uded. 

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DATE: 30 APRIL 2014 PAGE 2 OF 10

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### II 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. Qty. Source Gasket, Fuel Quantity Transmitter 369A4518 1 MD HI Decai ,Warning- Start Pump MHS5861-66 1 MD HI Adhesive, Fast Setting MDM16-1068, Class 88 1 MDHI or Commercial Epibond 1217 AlB (1 oz (RM011959) (28G)) K. Warranty Policy: Contact the MDHI Warranty Department for prices, orders, and availability. Telephone : 1-800-388-3378 or 480-346-6403. DATAFAX: 480-346-6814. MDHI Warranty Department will give authorized Service Centers not more than 4 hours of labor credit (spares credit) to complete this modification. Standard warranty policy applies.

L. Disposition of Parts Removed: N/A M. Tooling: N/A N. Weight and Balance: N/A 0. Electrical Load Data: N/A P. Other Publications Mfected: NIA Q. Reference Publications: CSP-H-2 Basic Handbook of Maintenance Instructions Copyright 1999

- 2 01 4 by MD Heli co pt

e rs In c. This document ma y be reproduced and distributed provided no fee is ch arged, the text is not modified, and this co py right notice is included. 

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### II CSP-H-7 Illu s trate d Parts Catalog CSP-HMI-2 Basic Handbook of Maintenance In s truction s - Servicing and Mainte nance CSP-IPC-4 Illustrated Parts Catalog 

### 2. ACCOMPLISHMENT INSTRUCTIONS A. Get Access to the LH Fuel Cell Cover Assembly ( 1 )

. Make sure all electrical power is off. (2 )

. Get access to the LH fuel cell cove r assembly . Refer to CSP-H-2, Section 12 or CSPHMI-2 , Section 28-00-00, as applicabl e . 

### B. Remove the Fuel Quantity Sensor



### ...

W_A_R_N-IN_G..,I
Use all neces s ary precautions consistent with safe practice when working in or around fuel cells

.

Care shall be taken not to damage fuel float arm or low fuel level warning contact spring while accomplishing this bulletin. ( 1 ). Disconnect the wire harness from the fuel quantity sensor (1, Figure 1). (2 )

. Cut and remove the lockwire (3) from the five bolts (4) that attach the fuel quantit y s e nsor (1) to the support assembly (6)

. (3 )

. Re move th e five bolts (4 ) and five washers (5) from the fuel quantity s en s or (1). ( 4). Carefully lift the fuel quantity sensor (1) up and out of the support assembly (6 ). Remove and discard the fuel quantity sensor gasket (2). 

### C. Inspect Auxiliaey Fuel Pump Assembly Wire Routing (1 )

. Use a shop mirror and flashlight to inspect the auxiliary fuel pump wire routing. R efer to Figure 2. The auxiliary fuel pump wire must be wrapped around the LH fuel cell fuel inlet hose assembly a minimum of one revolution. (2). If the auxiliary fuel pump wire is wrapped around the LH fuel ce ll fu e l inlet hose, re-install the fuel quantity sensor (Ref. Step 2.D .) , then go to Step 2

. F. (3). If the auxiliary fuel pump wire is not wrapped around the LH fuel cell fuel inlet hose , re-install the fuel quantity sensor (Ref. Step 2.D.), then go to Step 2

. E.

Copy righ t 1 999-2 01 4 b y MD Heli co p te rs In c . Th is document may be rep rodu ced and d istri b utedprovided no f ee is ch arged, th e text is not modi fied, and th is co py righ t n otice is incl u ded. 

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### II D. Install the Fuel Quantity Sensor (1). Install a new fuel quantity sensor gasket (2, Figure 1) on the fuel quantity sensor (1)

. (2). Install the fuel quantity sensor in the support assembly and secure with five bolts (4) and five washers (5). Lockwire (3) the five bolts. (3). Connect the wiring harness connector to the fuel quantity sensor (1)

. (4)

. Go to Step 2.F. 

### E. Route the Auxiliary Fuel Pump Wire Around the LH Fuel Cell Fuel Inlet Hose (1). Loosen the nut on the cable clamp and disconnect control cable (7, Figure 1) from fuel shutoff valve (8)

. (2 )

. Disconnect the LH fuel cell fuel inlet hose assembly (9) from the LH fuel cell fuel shutoff valve (8) assembly. (3). Disconnect the wiring harness connector from the auxiliary fuel pump wire (13) connector at the LH fuel cell cover (6). (4). Remove the bolts (13) and washers (14) securing the LH fuel cell cover (6) to the LH fuel cell. Carefully pry up the edge of the fuel cell cover (6) to break loose from the LH fuel cell. (5). Remove the auxiliary fuel pump connector jam nut (13) and remove the connector from the LH fuel cell cover. (6). Wrap the auxiliary fuel pump wire around the LH fuel cell fuel inlet hose, a minimum of one revolution , in such a way that it cannot interfere with the operation of the fuel quantity sensor float. Refer to Figure 2. (7). Install the auxiliary fuel pump wire thru the LH fuel cell cover (6, Figure 1) and secure with hex nut (13). (8)

. Re-seat the LH fuel cell cover (6) on the LH fuel cell and secure with washers (14) and bolts (13). (9). Go to Step 2.F.

Co py rig ht 1 999

- 2 01 4 b y MD He li cop te rs Inc

. Thi s doc u men t m ay be r e p rodu ced and d is tribu te d pr ov id ed no f ee is ch a r ged, th e tex t is no t modi fie d, and th is co py rig ht n otice is i n cluded. 

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8

13 

# n--n 7**F-=~~~~** OUTING OF START PUMP CAUSE I NTERFERENCE E FUEL QUANTITY FLOAT ARM RESULTION ONEOUS FUEL QUANT ITY N. REFER TO HELICOPTER TENANCE M A NUAL F OR PROPER L TANK COVER

. FUE L QUANTITY NSMITTER, AND START PUMP TALLATRION PROCEDURES

.

Figure 1. Fuel Cell Cover and Components Copyright 1999-2014 by MD Helicopte rs Inc. This document may be re produ ce d and distributed provid ed no fee is cha rged, the text is not modifi ed, and t his copyright notice is included. 9

10

88-647



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Item 1. 2. 3. 4. 5. 6. 7. Legend (Ref. Figure 1)
Nomenclature Item Nomenclature Fuel Quantity Sensor 

### 8. Fuel Shut-off Valve Fuel Quantity Sensor Gasket 9. LH Fuel Cell Fuel Inlet Hose Assembly Lockwire 10. Bolt Bolt 11. Washer Washer 12. Start Pump Warning Decal LH Fuel Cell Cover 13. Auxiliary Fuel Pump Wire Control Cable

Cop y righ t 1 999-2 01 4 b y MD He l icopters Inc . T

h is docum ent ma y be re p roduced and distr ibuted p rouid ed no f ee is ch arged, the text is not m odified, and thi s co py right notice is in cluded. -



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# SERVICE BULLETIN SB369H-255 SB369E-111 SB500N-049 SB369D-213 SB369F-098

DATE: 30 APRIL 2014 PAGE 7 OF 10 

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FUEL INLET HOSE

AUXILIARY

# FUEL~ PUMP WIRE 

### - ------- - --------**..-- --** **----..,~** AUXILIARY FUEL PUMP

Figure 2. Auxiliary Fuel Pump Wire Routing Copyrig h t 1 999

- 2 01 4 by MD Helicopters Inc. This docu m ent may be reproduced and distributed provided no f ee is charged, the text is not modified, and this copyright notice is included. 88

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### II F. Perform a Fuel Quantity Sensor (Transmitter) Functional Check NOTE: This functional check is not for fuel quantity indicating system accuracy, but to check proper fuel float arm function. (1). Do a fuel quantity sensor functional check. Refer to CSP-H-2, Section 12 or CSPHMI-2, Chapter 28-00-00. 

### G. Install the Warning Decal (1). Clean the top of the LH fuel cell cover (6, Figure 2) using isopropyl alcohol and a clean cloth. (2). Install the warning decal (12) on the LH fuel cell cover (6). (3). Edge seal (fillet) the decal (12) using MDM16-1068D, Class 8B, fast cure adhesive. The fillet shall be 0.03 inch (0.8 mm) minimum and 0.13 inch (3.2 mm) maximum. 

### H. Service the Fuel System (1). Make sure fuel system is properly serviced per SB369HN-185 and CSP-H-2 for 369H Series helicopters and CSP-HMI-2 for 369D, 369E, 369F/FF, and 500N Series helicopters. 

### I. Job Close-Up (1). Clean any fuel spillage using a clean cloth. (2)

. Install the LH fuel access door assembly. Refer to CSP-H-2 for 369H Series helicopters and CSP-HMI-2 for 369D, 369E, 369F/FF, and 500N Series helicopters

. 

### J. Compliance Record (1). Record compliance to this Service Bulletin in the Compliance Record section of the Rotorcraft Log Book. (2). Complete Bulletin Completed Record form (attached) and FAX or e-mail to MDHI Field Service Department.

C o py rig ht 1999-2014 b y MD He li copt ers In c. Thi s do cument ma y be re pr

odu ced a nd d is tributed prov id ed I W f ee is cha rge d, th e t ex t is not modifi ed, and this cop y rig ht noti ce is in cluded

. 

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# SERVICE BULLETIN SB369H-255 SB369E-111 SB500N-049 SB369D-213 SB369F-098

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# Bulletin Completed Record ONE- TIME INSPECTION OF FUEL PUMP HARNESS ROUTING AND DECAL INSTALLATION
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:

Address:

Phone: E-mail: Helicopter Serial No: Helicopter Total Time:

Date Complete:

Location:

This bulletin is complete:

Comments: (Signature) (Print Name) (Title)

Copy r ight 1999-2014 by MD Helicopters Inc . Thi s document may be r e produced and distributed pr ovided no f ee is charged, the text is not modifi ed, and this copy righ t notice is included. 

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Copyright 1999

- 2014 by MD Helicopters Inc. This document may be reproduced and distributed provided rw fee is charged, the text is not modified, and th is copyright notice is included

. 

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