02907011 Jewel Accelerometer ICA
Contents
1. 1 Metal Parts all metal parts bodies or casings of units in systems and in electrical instrument and radio installations ducting tubing rods and levers Inspect for the following a Cleanliness external signs of damage leaks overheating discharge or fluid contamination Obstruction of drainage or vent holes Correct seating and sealing of fairings and serviceability of fasteners Security of attachment fasteners and connections Distortion dents scores chafing pulled or missing fasteners rivets bolts or screws Spo m Signs of cracks or wear Separation of bond Failure of welds or spot welds i Deterioration of protective treatment and corrosion 2 Electrical Wires and Components a Cleanliness obvious damage corrosion security of attachments and connections b Overheating or fluid contamination c Chaffing of wires and bare or exposed wires d Evidence of erosion of connectors pins and wires e Checkterminal ends and connectors for loose or damaged pins 3 2 Electrical Bonding Check Procedures The maintenance inspections found in Table 1 are carried out using the following maintenance practices 1 All installed components and equipment should be bonded and grounded to prevent malfunctions of equipment and eliminate electrical spark hazards 2 Electrical bond measurements should be made from the component under test to primary aircraft structure If the measured bond resista2. WIRING BEFORE MODIRCATION d em gam p 005 INSTALLATION OTHER oaw caasri3 AREN NC DRAWN HSCHESSWAN BUTLER NATIONAL CO 5 1 x im 3x in op pe 02903001 _ Ti LEARJET 20 amp 30 SERES STALL WARNING ACCELEROMETER WIRING DI Figure 1 Stall Warning Vertical Accelerometer Electrical Interconnect cont d Document No 0290701 1 Rev IR Page 16 of 17 4 3 2 L ACCELEROMETER REF STALL WARNING TN 1 1 i 1 I WIRING BEFORE MODIFICATION 007 INSTALLATION mmmn b Es WIRING AFTER MODIRCATION i FRAME 5 BULKHEAD P399 P12 J399 J12 gt ae y oa 708 rorem AD STALL WARN POWER WIRING BEFORE MODIFICATION aor MSAUATION EO awe FRANCES CHECK D LANMING TME LEARJET 20 amp 30 SERIES STALL WARNING ACCELEROMETER WIRING DIAGRAM Figure 1 Stall Warning Vertical Accelerometer Electrical Interconnect cont d Document No 0290701 1 Rev IR Page 17 of 17
3. ENGINEERING RELEASE DRAWING NO MODEL SHEET 0290701 1 LEARJET MODEL 20 AND 35 36 SERIES 1 OF 1 HM DRAWING TITLE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS FOR REPLACEMENT VERTICAL STALL WARNING ACCELEROMETER ON LEARJET MODELS Butler National Corporation 24 24A B 24B A D D A E F F A 25 25A B C D F 28 29 35 35A 36 AND Olathe Kansas 36A AIRPLANES WITHOUT FC 530 OR FC 535 AUTOPILOTS REV OR RELEASE SUPERCEDED STEM JATE BY RELEASE INFORMATION 08 09 14 IR INITIAL RELEASE REMARKS FRMOS6 IR Butler National Corporation INSTRUCTIONS FOR CONTINUED AIRWORTHINESS FOR Replacement Stall Warning Vertical Accelerometer ON Learjet Models 24 24A 24B 24B A 24C 24D 24E 24F 24F A 25 25A 25B 25C 25D 25F 28 29 35 35A 36 and 36A Airplanes Without FC 530 or FC 535 Autopilots Document Number 02907011 Rev IR BY Butler National Corporation 311 109 St SW Hangar 201 North Suites Everett WA 98204 Project No SA12098SE T Rev IR Initial Release Approval Date R David Lanning 08 18 2014 Checked Chris J Reedy 08 18 2014 Approved C Todd Hembree 08 18 2014 R David Lanning 08 19 2014 Document No 0290701 1 Rev IR Page 1 of 17 Butler National Corporation Log of Revisions Revision Date Description of Change Approved 08 19 2014 Initial Rele
4. Document Control This document shall be released archived and controlled in accordance with the Butler National Corporation document control system When this document is revised the document will be made available on the Butler National Corporation website 1 4 Restriction to Use Certain Documents No entity or person applying for approval of an installation of the replacement Stall warning vertical accelerometer may use or reference STC documents or these Instructions for Continued Airworthiness to show compliance with any regulations unless authorized in writing by Butler National Corporation 1 5 Definitions The following terminology is used within this document ACO Aircraft Certification Office LRU Line Replacement Unit AEG Aircraft Evaluation Group PMI Principal Maintenance Inspector CFR Code of Federal Regulations POI Principal Operations Inspector FAA Federal Aviation Administration ICA Instructions for Continued Airworthiness STC Supplemental Type Certificate 1 6 Terminology Except where specifically noted references made to the Vertical Accelerometer will be only to the replacement vertical accelerometer having Butler National part number 02904001 101 Document No 0290701 1 Rev IR Page 4 of 17 Butler National Corporation 2 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 2 1 Introduction Content Scope Purpose and Arrangement This document identifies the Instructions for Continued Airworthiness fo
5. INSTRUCTIONS 1 eere esee eee nennen enne nen 11 3 1 INSPECTION PROCEDURES sssssseececececceaceessescecececseeeenssssenceeeceseaeenasenceceeseseeeaueeaneeeeeseseaeees 11 3 2 ELECTRICAL BONDING CHECK 11 4 AIRWORTHINESS LIMITATIONS SECTION eene eee eee nenne nennen nenne nena e seen 13 APPENDIX A EQUIPMENT LOCATION ELECTRICAL INTERCONNECT AND IDENTIFICATION 14 Document No 0290701 1 Rev IR Page 3 of 17 Butler National Corporation 1 INTRODUCTION 1 1 Purpose This document is designed for use by the installing facility of the replacement vertical accelerometer Butler National part number 02904001 101 for the stall warning system in the Learjet model 24 24A 24B A 24C 24D 24D A 24E 24F 24F A 25 25A 25B 25C 25D 25F 28 29 35 35A 36 and 36A when not equipped with the FC 530 or FC 535 autopilot as Instructions for Continued Airworthiness in response to 14 CFR Part 25 and 14 CFR Part 25 Appendix G This ICA includes information required by the operator to adequately maintain the replacement stall warning accelerometer 1 2 Scope This document identifies the Instructions for Continued Airworthiness for the modification of the aircraft for installation of the replacement stall warning vertical accelerometer Butler National part number 02904001 101 as provided in the Supplemental Type Certificate 1 3
6. RH Stall Warning Switch RH Stall Vane and RH Control Column 12 If the above conditions are not met repair or replace System components as required and repeat the Operational Check 13 If the above conditions are met reinstall accelerometer normal side up and set Stall Warning switches and Battery Switch es to OFF 14 Reinstall the nose compartment access door 15 Complete the aircraft flight records in accordance with 14 CFR Part 43 9 Interval Every 220 hours Equipment Visual Check Conduct a visual check see Section 3 1 of the Vertical Accelerometer and its wire harness to ensure continued installation integrity Inspect the Vertical Accelerometer for security of attachment including visual inspection of screws and other supporting structure attaching the Vertical Accelerometer to aircraft Every 600 hours or 24 months Test Bonding Check Perform an electrical bonding check See Section 3 2 Perform electrical bond check between the Vertical Accelerometer and separate ground screw on frame and verify that it is less than 2 5 milliohms Every 600 hours or 24 months Document No 0290701 1 Rev IR Page 8 of 17 Butler National Corporation 2 6 Troubleshooting Information If erroneous indications occur with respect to the Stall Warning System consult the applicable Learjet Service manual Section 2 or Maintenance Manual Chapter 27 2 7 Removal and Replacement Infor
7. RING 65100 22 16ANG RD TECONN 2 EXISTING WIRE SEGMENT SHOWN MAY NOT BE PRESENT IN ALL AIRCRAFT 1 3 3 71 T898NAL RNG 8103100 E gt 76 4 IS THE REDUCED APPROACH SPEED SYSTEM KIT Z gt ACCELEROMETER CONNECTOR HAS DESIGNATOR AP22 FOR AIRCRAFT 23 003 THRU 23 014 E gt LEARJET 250 330 SWA006x20 WIRES INSTALLED WITH M22759 16 22 9 WIRE WITH LABELS SWAQ06A22 AND SWA006822 F gt REFERENCE DEE HOWARD STALL WARNING AOA SYSTEM WIRING DIAGRAM 1 4214 FOR FURTHER INFORMATION Figure 1 Stall Warning Vertical Accelerometer Electrical Interconnect Document No 02907011 Rev IR Page 15 of 17 IRI fot MEU WEAR RARO WE TE EN FORMER SL OF BUTE RATIONAL CORPORATION PROHIBET WIRING AFTER MODIFICATION 8 ACCELEROMETER REF COMPUTER P22WAP22 gt iL 1 1 1 1 1 1 1 gt STALL WARNING COMPUTER 9 E b WIRING BEFORE MODIFICATION 001 INSTALLATION WIRING AFTER MODIFICATION ACCELEROMETER ACCELEROMETER REF REMOVE P221 STALL WARNING gt pe T 1 LE B gt prm ms 1 4 1 1 1 1 1 P917 1 1 1 1 1 1 1 1 1 1 1 1 L 1 LSTALL WARN POWER 1
8. ase CTH Butler National Information Disclosure use or reproduction without the express written permission of Butler National Corporation is prohibited Copyright 2014 Butler National Corporation All rights reserved Butler National Corporation 19920 W 16151 Street Olathe KS 66062 http www butlernational com Document No 02907011 Rev IR Page 2 of 17 Butler National Corporation TABLE OF CONTENTS 1 INTRODUCTION 4 ET PURPOSES sis or rr e EE RE ee oe con Rx PR EQ e n EIE ERN 4 L2 4 173 DOCUMENT CONTROL EA 4 1 4 RESTRICTION TO USE CERTAIN nnn nnns nantes nares essa nnns 4 T5 1DEFINLTIONSzd ree Tere doe deo ct asper eet apa eie 4 1 6 FTERMINOLEOQY 22 et eode tto eee tione a deoa 4 2 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS ee eere eene eene enne nnne enun 5 2 1 eric e eae e SERRE LER eene e eee eaa ee e x nhe eee Va E Ee 5 2 2 DESCRIPTION OF ALTERATION AREE eS EAE SUV e PESE 5 2 3 CONTROL OPERATING AND TESTING INFORMATION 5 2 4 SERVICING INFORMATION eoe ge eH po gn nu reso ndn aao gage Eo
9. ga eR n No gba eae So aga rn poo gara dos 6 2 5 PERIODIC MAINTENANCE 2sccccenssccccnnsssecccnnsseeccansseeceansssscesansseecsansssessanseseseeaaesseesaceseseeeaesess 6 2 6 TROUBLESHOOTING INFORMATION ccccccescececeescecccceseececsaseecessaaeeceessaseeeessaaeeeeesaaeeeeessaaeseeseagees 9 2 7 REMOVAL AND REPLACEMENT INFORMATION scccccseseececseceececeeneececeeneeceseeaeeeceseaaeeeeseaaeseeseageees 9 26 DIAGRAMS eran den 9 2 9 SPECIAL INSPECTION REQUIREMENTS ccsscccecceseececeeaseececsaneececsaseececeeasenceceaseneeceaseseeseeaseseeeeaaens 9 2 9 1 Lightning Protection Cheeks erraria ioa E EEEE EEE EE EEE 9 2 10 APPLICATION OF PROTECTIVE 9 2 11 DATA RELATIVE TO STRUCTURAL FASTENERS 9 2 12 SPECIAL TOOLS iori nta eie e edi ones dee eee in Rea ev ao e aea denne ed aee v Ode une e de ens Uode 9 2 13 ADDITIONALINSTRUGTIONS AEE aene aee 9 2 14 OVERHAULDPERIOD3 5 ivre o n EE SY X EXER TE RAE X ERR YER EE UPC NR eda re Rare Eae 9 2 15 REVISION AND DISTRIBUTION rn e rh e devs ERES E TR eek a edo CERA 9 PEAKS ec 9 2 17 IMPLEMENTATION AND RECORD KEEPING s0ssceccesssceceeesssceceasesceceeassceceseaescessaaeseessaneeeesseagees 10 3 MAINTENANCE AND SERVICING
10. ing pusher force on the yoke The system design is intended to limit the pusher in case of an erroneous stall indication at high speeds The Vertical Accelerometer Butler National part number 02904001 101 is for installation the stall warning system in the Learjet Model 24 24A 24B 24B A 24C 24D 24D A 24E 24F 24F A 25 25A 25B 25C 25D 25F 28 29 35 35A 36 and 36A 2 3 Control Operating and Testing Information Note The Vertical Accelerometer check is performed with the accelerometer removed from the mounting location Perform the Vertical Accelerometer Power Source and Operational Checks as provided in the references below Document No 0290701 1 Rev IR Page 5 of 17 Butler National Corporation On aircraft 24 100 thru 24 357 25 003 thru 25 060 and 25 062 thru 25 064 refer to Section 2 of the Service Manual for the Accelerometer Operational Check as well as the Power Source Check as described in Table 1 below On aircraft 25 061 25 070 thru 25 373 28 001 thru 28 005 29 001 thru 29 004 35 003 thru 35 505 and 36 003 thru 36 053 refer to Chapter 27 of the Maintenance Manual for the Operational Check of the Stall Warning Accelerometer as well as the Power Source Check as described in Table 1 below 2 4 Servicing Information Follow the scheduled Power Source and Operational Checks of the stall warning accelerometer at 220 hour intervals The Learjet Maintenance Manual and Table 1 below identify the Power So
11. mation For Vertical Accelerometer removal and replacement instructions refer to Butler National Installation Drawing Document 02902001 If the Vertical Accelerometer is removed and to be reinstalled verify that the Vertical Accelerometer is functioning properly using the Power Source and Operational Checks described above in Table 1 If any work has been performed on the aircraft that could affect the system wiring or any interconnected equipment verify the operation of the stall warning per the Stall Warning System checks in the Airplane Flight Manual 2 8 Diagrams The Vertical Accelerometer installation wiring diagram is contained in Appendix A of this document 2 9 Special Inspection Requirements 2 9 1 Lightning Protection Checks In the event of a suspected or actual lightning strike to the aircraft perform the Power Source and Operational Checks described in Table 1 above 2 10 Application of Protective Treatments Not Applicable 2 11 Data Relative to Structural Fasteners Not Applicable 2 12 Special Tools For electrical bonding testing a milliohm meter is required 2 13 Additional Instructions None 2 14 Overhaul Period The Vertical Accelerometer does not require overhaul at a specific time period Power Source and Operational Checks of the Vertical Accelerometer must be performed in 220 hour intervals 2 15 ICA Revision and Distribution To revise this ICA Butler National Corporation will distribute revisio
12. nce exceeds specifications troubleshoot the installation by measuring the bond resistance of each interface between the tested component and primary structure Electrical bond measurements should be made with all power off of the aircraft If it is not possible to make electrical bond measurements with the power off of the aircraft use the following procedure a Measure the resistance with the red lead on unit and black lead on structure Record this measurement as H1 Document No 0290701 1 Rev IR Page 11 of 17 Butler National Corporation b Measure the resistance with the black lead on the unit and the red lead on structure Record this measurement as R2 Average the two measurements R R1 R2 2 If R meets the requirement the installation is acceptable CAUTION IF THE SPECIFIED BONDING VALUES ARE NOT MET REWORK BONDING AREAS IN ACCORDANCE WITH THE PROCEDURES FOUND IN THE BASIC AIRCRAFT WIRING MANUAL Document No 0290701 1 Rev IR Page 12 of 17 Butler National Corporation 4 AIRWORTHINESS LIMITATIONS SECTION The Airworthiness Limitations section is FAA approved and specifies maintenance required under 843 16 and 891 403 of the Federal Aviation Regulations unless an alternative program has been FAA approved These inspections are in addition to all other inspections specified in the Airworthiness Limitations Section of the basic Learjet Maintenance Manuals The following are maintenance tasks due to FAA Airwo
13. ns to the Instructions for Continued Airworthiness according to the company procedures The latest revision of this ICA document is available on the Butler National website http www butlernational com 2 16 Assistance Flight Standards Inspectors or the certificate holder s PMI have the required resources to respond to questions regarding this ICA In addition the customer may refer questions regarding the Vertical Document No 0290701 1 Rev IR Page 9 of 17 Butler National Corporation Accelerometer and its installation to Butler National Corporation during normal business hours via telephone 913 780 9595 2 17 Implementation and Record Keeping Modification of an aircraft by this Supplemental Type Certificate obligates the aircraft operator to include the maintenance information provided by this document in the operator s aircraft maintenance manual and or the operator s aircraft scheduled maintenance program Document No 0290701 1 Rev IR Page 10 of 17 Butler National Corporation 3 MAINTENANCE AND SERVICING INSTRUCTIONS 3 1 Inspection Procedures The maintenance inspections found in Table 1 are carried out using the following Visual Inspection Criteria General Visual Inspection A visual inspection that will detect obvious unsatisfactory conditions discrepancies This type of inspection may require cleaning removal of fillets fairings access panels doors etc Work stands ladders etc may be required to gain proximity
14. r the modification of the aircraft by replacement of the stall warning vertical accelerometer with Butler National part number 02904001 101 Applicability Applies to Learjet Model 24 24A 24B 24B A 24C 24D 24D A 24E 24F 24F A 25 25A 25B 25C 25D 25F 28 29 35 35A 36 and 36A aircraft not equipped with the FC 530 or FC 535 autopilot when altered by installation of the Vertical Accelerometer in accordance with Butler National Corporation STC Definition of Abbreviations See Sections 1 5 and 1 6 Precautions None Units of measurement None Referenced publications Learjet Service Manual Sections 2 and 7 or later FAA Approved revisions Learjet Maintenance Manual Chapter 24 and 27 Learjet Wiring Manual Chapter 20 Learjet Illustrated Parts Catalog Chapter 27 Butler National Installation Drawings 02902001 02903001 Retention This Document or the information contained within will be included in the aircraft permanent records 2 2 Description of Alteration This project replaces the existing stall warning system vertical accelerometer with the replacement Vertical Accelerometer Butler National part number 02904001 101 that is the same form fit and function as the previously approved vertical accelerometer Note There is a connector and wiring change see Butler National Drawing 02903001 The stall warning system accelerometer provides a sensor input to limit the stall warn
15. re is no change to electrical loads information for the replacement Vertical Accelerometer Document No 02907011 Rev IR Page 14 of 17 IR e IPIE CAE UA AONO ANE ACE DOAN COMPQURACONS 4 AOC NOSS 6 POWER SOLACE ANO PREVENT DAN WHEN ALL COMPUTE OFF ADO FART USI TENS 14 THR 2B AND NO 9 THRU 2077 24 100 THRU 24 320 25 000 HRY 25 060 25 042 MRY 25 069 MODEL CERTHEO FOR OPERATION IN AUSTRALIA 35 002 MIU 35 064 34 C02 HRY 34 017 MODIFED BY AAK 76 44 E 24 329 THRU 24 387 25 061 25 070 THRU 25 224 35 047 THRU 35 114 34 018 THEU 34002 AND 203 THU 23 099 24 POD THRU 24 329 2 003 THRU 25 040 25 042 HEU 25 049 35002 25 225 THRU 25 373 28001 THRU 28 005 29 001 THRU 29 004 25 113 THRU 29 504 INSTALLATION Of 530 24 100 HRY 24 337 25 003 THEU 25 373 BY DFF HOWARD ADA SYSTEM NOTES ALL WIRING CHANGES TO BE MADE IAW LEARJET STANDARD WIRING PRACTICES FOUND IN CHAPTER 20 OF THE APPLICABLE LEARJET 20 OR 30 SERIES AIRCRAFT WIRING MANUAL Z gt WIRES TO BE MARKED IAW SAE 550881 REVISION C OR SUBSEQUENT WIRING STANDARDS 85 SELECT OPEN CONTACT AT CONNECTORS J399 AND P399 EXCEPT 23 003 THRU 23 009 AND 24 100 THRU 24 129 USE J12 AND P12 RECORD PIN SELECTION IN A C RECORDS MAY ALTERNATELY USE SPARE PINS AT J807 AND P807 INSTALLED BY DEE HOWARD MOD 45 SEE TABLE 2 FOR CONNECTOR AND PIN NUMBERS EIE KL fara RWNAL
16. rthiness Directive AD 82 01 05 The tasks are mandatory stall warning vertical accelerometer checks for the aircraft The Task Interval column provides the maximum allowable threshold T and repeat R intervals as approved by the FAA The repeat interval is defined from the last time that particular task was done The inspection intervals are in hours H The Reference Section column contains the ICA paragraph number where inspection procedures may be found Task Title Task Interval Ref Section T 220H Power Source Check R220H 2 5 Table 1 T 220H Operational Check R220H 2 5 Table 1 FAA Approved bad Date of v Ross Landes Aeting Manager Aircraft Certification Office Federal Aviation Administration Renton WA Document No 02907011 Rev IR Page 13 of 17 Butler National Corporation Appendix A EQUIPMENT LOCATION ELECTRICAL INTERCONNECT AND IDENTIFICATION LRU Locations The table below describes the location of the Vertical Accelerometer LRU Description of Location Stall Warning Vertical Accelerometer Frame 2 Nose Compartment See Butler National drawing 02902001 A 2 Electrical Interconnect The diagrams in this Appendix depict the electrical interconnect configurations of the Stall Warning Vertical Accelerometer for the applicable Learjet aircraft A 3 Wire Marking Codes The electrical wiring diagram also contains the wire marking codes A 4 Electrical Load Data The
17. t Battery Switch es to ON Check for 28 VDC 1 0 5 Verify stall warning power input measures approximately OVDC Ground 6 Set LH Stall Warning Switch to ON 7 Verify voltage is approximately 28VDC 8 Set RH Stall Warning Switch to ON 9 Verify voltage is approximately 28VDC 10 Set LH Stall Warning Switch to OFF RH still ON 11 Verify voltage is approximately 28VDC 12 Set RH Stall Warning Switch to OFF both OFF 13 Verify voltage is approximately OVDC ground Interval Every 220 hours Document No 02907011 Rev IR Page 7 of 17 Butler National Corporation Item Operational Check Description Procedure Perform stall warning accelerometer operational check as follows CAUTION Limit this Operational Check to a short duration so as not to overheat the components 1 Remove the LH nose compartment access door 2 Remove accelerometer mounting screws 3 Set Battery Switch es to ON Check for 28 VDC 0 5 Set LH Stall Warning Switch to ON Hold the accelerometer normal side up Adjust horizontal stabilizer position until a neutral feel of the LH control column is obtained Move the LH stall vane up Using a spring scale observe that the LH control column pusher force reaches 40 to 80 pounds 9 Rotate accelerometer 180 upside down from normal 10 Observe that the column pusher force has reduced to 20 pounds or less 11 Repeat steps 4 thru 10 using the
18. urce and Operational Check procedures applicable to the aircraft In the event of system failure troubleshoot the stall warning system in accordance with Section 2 6 Troubleshooting Information below Contact Butler National Corporation for any required additional information 2 5 Periodic Maintenance There is no change to maintenance requirements of the stall warning accelerometer with the installation of the replacement Vertical Accelerometer The Vertical Accelerometer must be inspected and tested in 220 hour intervals as provided in Table 1 below Table 1 Maintenance Intervals Item Description Procedure Interval Equipment Removal amp Removal and replacement of Vertical Accelerometer On Condition Replacement Removal and replacement instructions are contained in Section 2 7 of this document and in Butler National installation drawing 02902001 Document No 0290701 1 Rev IR Page 6 of 17 Butler National Corporation Item Power Source Check Description Procedure Perform stall warning vertical accelerometer power check as follows Vertical accelerometer power will be verified by measuring the DC voltage between accelerometer connector P221 pins A and D 1 Remove the LH nose compartment access door 2 Remove connector P221 from Stall Warning Vertical Accelerometer assembly 02904001 101 3 Verify that the LH and RH Stall Warning Switches are OFF 4 Se
Download Pdf Manuals
Related Search