# Simplex Manufacturing Alert Service Bulletin 2017-001: No revision named

- Rights: © Simplex Manufacturing. Filed by the FAA in regulations.gov docket FAA-2019-1053; AD 2020-05-11 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Simplex Manufacturing Alert Service Bulletin 2017-001](https://openairdocs.org/service-documents/simplex/sb-2017-001.md)
- Title as filed: Simplex ASB 2017-001 Rev IR
- Pages: 2
- PDF: https://openairdocs.org/files/sha256/e7/11/e711e68190bf233a4a1af1271b5c9ee1f2d0eef3cdd6c58607e89137c2f81a06
- Page: https://openairdocs.org/service-documents/simplex/sb-2017-001/file/e711e68190bf

## Text

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### Page 1 (OCR)

SIMPLEX Mfg  Aviation Mission Equipment
ASB2017-001
Rev. IR
Page 1 of 2
ALERT SERVICE BULLETIN
Service Letter Number  Description  Revision  Revision Date
ASB2017-001  Initial Release  IR  March 28, 2017
Written By:  Approved By:
Robert Bosserman  Galen McDermed
Technical Publications  Director of Certification
SUBJECT:  Model R44III Spray System Honda Pump Fitting inspection.
APPLICABILITY:  Model R44III Spray System Serial numbers 0045 through current.
SUMMARY:  An operator has reported that the 2-inch coupling on the Honda Pump for the R44IIl
Spray System has broken in flight. Simplex is investigating the cause of this isolated
failure. Until our investigation is completed, we are requiring R44IlI Spray System
operators to inspect the associated fittings for signs of fatigue before each flight.
PURPOSE:  This Service Bulletin will describe mandatory inspections of pump fittings.
COMPLIANCE:  Mandatory for all R44III Spray systems noted above.
APPROVAL:  Simplex Manufacturing Co. Certification Director
ADDITIONAL DOCUMENTS:  None required. Reference documents include:
R44III Installation Manual:  PM001-HPR44III-25-008
R44|II Instructions for Continued Airworthiness:  PM011-HPR44||I-25-007
The information contained in the letter is proprietary to Simplex Manufacturing Co. Inc. Disclosure, reproduction, or use of this data
for any purpose other than the operation and maintenance of the Simplex Manufacturing System is forbidden without prior written
authorization from Simplex Manufacturing Co. Inc., Portland, Oregon.
SIMPLEX Mfg  Aviation Mission Equipment
13340 NE Whitaker Way, Portland Oregon USA 97230
Phone: +1 (503) 257-3511 Fax: +1 (503) 257-8556
mail@simplexmfg.com

### Page 2

ASB2017‐001 
Rev. IR 
Page 2 of 2 
 
 
13340 NE Whitaker Way, Portland Oregon USA 97230 
Phone: +1 (503) 257‐3511 Fax: +1 (503) 257‐8556  
mail@simplexmfg.com 
MANPOWER REQUIREMENTS:  This inspection will require approximately five (5) minutes or less. 
WEIGHT AND BALANCE:  No Change. 
TOOLS:   None, visual inspection only. 
INSPECTION INTERVAL:  PRE flight inspection is mandatory.  If cracking or other signs of fatigue are found, 
contact Simplex Manufacturing Co. immediately at 1‐503‐257‐3511. 
INSPECTION ACCESS:  The fitting can be easily accessed while the system is installed. 
ACCOMPLISHMENT INSTRUCTIONS: 
NOTE: 
This procedure applies to all systems equipped with the Honda Pump, Model Number WMP20X. Until further notice 
from Simplex is received, perform these required inspections and take great care to avoid unnecessary strain on the 
hoses and filters that are attached to these fittings. In particular, avoid stepping on or applying any weight to the hose 
assemblies that run from the Pump Housing to the Boom. 
1. With fluid in the tank, start the R44 III Spray System Pump Motor. 
2. Locate the Coupler and Elbow Fitting on the top of the Pump Housing. Shown in Figure 1. 
3. Inspect the Coupler and Elbow fitting for any signs of stress, cracking, fatigue, or evidence of leaking. 
4. Apply slight upward and downward force to the outlet hose while monitoring the fittings for any 
leaking that may indicate cracks or fatigue. 
5. If evidence of damage is found, shut down the system and do not operate the pump while in flight. 
Contact Simplex Manufacturing Co. Customer Support department by calling 1‐503‐257‐3511. 
 
Figure 1  R44III Honda Pump Fittings Inspection

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