Service Information for RSA-10AD1 Fuel Injection Servo
Robinson R44 · Systems Description
Overview
This document is a Service Information Letter (SIL) specifically addressing the RSA-10AD1 fuel injection servo used in the Robinson R44 II helicopters equipped with Lycoming IO-540-AE1A5 engines. It provides repair shops with essential flow bench limits and service information for the RSA-10AD1 fuel injection servo, part number 2576630-4. The document includes revisions that correct previous drafting errors and outlines the applicability of the service information to the specified fuel injection servo. It serves as a reference for maintenance and repair procedures, ensuring that technicians have the necessary details to perform their tasks effectively.
- The RSA-10AD1 fuel injection servo is applicable to Robinson R44 II helicopters with Lycoming IO-540-AE1A5 engines.
- Part number for the fuel injection servo is 2576630-4.
- Calibration limits are specified under test specification 30111-01 for new units.
- Service limits are specified under test specification 30112-01 for new units.
- The document includes a history of changes from 2002 to 2005, detailing updates to part numbers and assembly specifications.
Document
Source
Originally published by precisionairmotive.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Systems Description
- Year
- 2008
- Pages
- 5
- File size
- 773 KB
- Publisher
- precisionairmotive.com
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In this document
Effectivity
The service information is applicable to all RSA-10AD1 fuel injection servos, parts list number 2576630-4, which are installed on Lycoming IO-540-AE1A5 engines in Robinson R44 II helicopters.
Description
The document references manual 15-433D, detailing various parts associated with the RSA-10AD1 fuel injection servo. It includes a list of part numbers and descriptions for components such as the fuel injection servo, outlet fitting, packing, adapter, and throttle lever.
Calibration and Service Limits
The document specifies calibration limits and service limits for the RSA-10AD1 fuel injection servo, indicating that the test specifications are applicable for new units.
History of Changes
The document outlines the history of changes made to the service information, detailing the release dates and descriptions of modifications from Issue 1 to Issue 4, including part number updates and additional components.
Full document text
SUBJECT: Service Information for RSA-10AD1 Fuel Injection Servo Parts List Number 2576630-4. PURPOSE: To provide repair shops with flow bench limits and service information for RSA-10AD1 fuel injection servo parts list number 2576630-4. Revision 4 corrects drafting error in 15-433D, IPL, Figure 1 table, Item Number 75 A. EFFECTIVITY: This Service Information Letter is applicable to all RSA-10AD1 fuel injection servos, parts list number 2576630-4. These servos are installed on Lycoming IO-540-AE1A5 engines on Robinson R44 II helicopters. B. DESCRIPTION: The service information found in manual 15-433D, for parts list 2524030-11 is applicable to parts list 2576630-4 except as follows: 1. Reference manual 15-433D, IPL, Figure 1: Item Number 2576630-4 Part Number Description 1 2576630-4 Fuel Injection Servo 20 2522710 Outlet Fitting 25 951789 Packing, Preformed 30 2577202 Adapter, Fuel Inlet 40 392522 Plug, Pipe 55 2538890 Plug 75 2540174 Bolt, Idle Speed 85 2522004 Lever, Throttle 100 2577188 Lever, Mixture Control 110 2576629-D Fuel Injector Assembly (Basic) 2. Reference manual 15-433D, IPL, Figure 3: Item Number 2576630-4 Part Number Description 20 2538755 Lever Assembly, Idle Valve 25 2538321 Stem, Idle Valve 160 2577206-895 Valve, Idle SIL RS-74 Revision 4 SMALL RECIPROCATING ENGINES RSA-10AD1 Issued 2/25/08 Page 1 of 5 Service Information Letter - Fuel Systems S.I.L. RS-74 Revision 4 Page 2 of 5 3. Reference manual 15-433D, IPL, Figure 4: Item Number 2576630-4 Part Number Description None D732-11 Bracket (Robinson Supplied) See Figure 1 None D732-12 Bracket (Robinson Supplied) See Figure 1 25 2523502, 2577195, or 2577225 Cover, Regulator 4. Reference manual 15-433D, IPL, Figure 5: Item Number 2576630-4 Part Number Description 10 2523910 Valve, Throttle 30 2523911 Stop, Throttle 50 2526429 (5 per assy*) Packing, Preformed * 5 ea with 2577236 Venturi 3 ea with 2523429 & 2577228 Venturi 55 2523429, 2577228, or 2577236* Venturi Assembly 5. Reference manual 15-433D, Calibration and Service Limits: Specification Type 2576630-4 Test Specification Applicable Figure Calibration Limits 30111-01 New Service Limits 30112-01 New 6. Reference manual 15-433D, History of Changes: Date IC Number Description Issue 1 11-1-02 1 Released to Production Issue 2 7-19-04 2 Regulator Cover 2577225 was 2577195 or 2523502 Venturi Assembly 2577228 was 2523429 Issue 3 3-9-05 3 Basic Assembly 2576629-C was 2576629-B. Venturi Assembly 2577236 was 2577228. Added (2) additional 2526429 Preformed Packings. Added optional Regulator Covers 2523502 and 2577195 Issue 4 6-8-05 4 Basic Assembly 2576629-D was 2576629-C. Added optional Venturi’s 2523429 or 2577228. Added * 5 ea with 2577236 Venturi, 3 ea with 2523429 or 2577228 Venturi. Robinson Bracket D732-11 was D732-9, added Robinson Bracket D732-12. Inlet and Alternate Inlet locations and part numbers swapped. Outlet and Alternate Outlet locations swapped; Outlet 2522710 was 366082, Alternate Outlet 392522 was 133176. S.I.L. RS-74 Revision 4 Page 3 of 5 FIGURE 1 S.I.L. RS-74 Revision 4 Page 4 of 5 S.I.L. RS-74 Revision 4 Page 5 of 5
What's in the Robinson R44 TCDS
A Type Certificate Data Sheet (TCDS) is the FAA's record of what an aircraft type was approved as. It is the source of truth for weights, seating, fuel and the rules the design was certified against. Expand any line to see what it means.
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