Service Bulletin Index

Transcription

1 PC-A B-930A-A Service Bulletin Index This Index gives a list of all Service Bulletins for the,,,, -4R and -4S series Islander and -Mklll Trislander aircraft. / Inspection of tailplane, elevator, trim tab and attachments Elevator trim system fouling of cable mounted stops Elevator attachments, outboard hinge bolts Examination of rudder final drive lever, rudder lower & center hinge positions Pilot & passenger seat cushion supports CANCELLED See / SB.49 Recommended CANCELLED See NB/M/119 Recommended CANCELLED See NB/M/130 Essential CANCELLED See NB/M/182 NB/M/194 All and aircraft Ser Nos. C01 - C19 inclusive Also Mods NB/M/238 NB/M/ Fitment of fuel tank vent-plugs Recommended CANCELLED See / SB Fuel tank vent-plugs deletion Recommended CANCELLED See / Vendor modifications to the Bendix RT 221 AE 28 Transceiver Recommended CANCELLED See / Locking of trim tab hinge-pins Recommended CANCELLED ed by NB-M Inspection of lower flanged-ring retaining-bolts of each main u/c leg Recommended CANCELLED See / Fuel pipe between ED pump & carb and aircraft not incorporating Mod. NB-M- 300 aircraft C01 - C77 Intro Mod NB/M/ Repair to combustion monitor probe Recommended CANCELLED See / Lubrication of flight controls Recommended CANCELLED See / Inspection of tailplane drag angles Recommended CANCELLED See / Issue Page 1

2 / Inspection of aileron, rudder & nosewheel control systems Islander series aircraft C3-C43 and C45 and C Replacement of blind rivets Recommended CANCELLED See / Inspection of vacuum instrument hoses Inspection of engine-indication systems elbow-connections Inspection of tailplane, elevator, trim tab & attachments Recommended CANCELLED See / Recommended CANCELLED out of date - NOT ISSUED Campaign Wire, See /SB Rudder-bar beam defects, specifically C116 and subsequent aircraft without NB- M Inspection of wiring looms in cabin roof Recommended CANCELLED Short circuit on passenger notice switch Provision for grease pressure relief-hole in rudder trim bearing Elevator trim final-drive-lever - attachment lugs Loose locking keys in wing attachment spindles Inspection of nosewheel steering & rudder drive levers on rudder bar Inspection of tailplane front-spar attachments Recommended CANCELLED Superseded by NB-M 365 Recommended, aircraft not incorporating NB-M-394 CANCELLED See / Recommended CANCELLED See /, aircraft not incorporating NB-M-404 Issue Page 2

3 / Fire hazard in carburettor air boxes, and - MkIII not incorporating NB-M-362 O-540 engine Islanders only Loose rivets in wing leading edge Recommended Pre- Mod NB/M/ Water ingress to elevator tips Recommended CANCELLED See / Bendix impulse-coupling inspection Recommended CANCELLED See / To prevent inadvertent detachment of ashtray stubber springs To provide aperture shut-off of PSU ventilators Provision of rivets in baggage-bay door-handle assembly Recommended CANCELLED ed by SB35 Recommended Recommended CANCELLED See / Revised cabin-trim embellishers Recommended Inspection of flap operating lever and flap attachments Repositioning of magneto suppressor filters Carburettor heat muffs, chafing of engine mounting struts Clearance between ventilation hoses and PSU lamps Attachment of electrical cables to engines and not incorporating NB-M-417 or NB-M-430 Recommended CANCELLED See / Recommended CANCELLED See / Recommended Recommended Payload & wing zero-fuel weight CANCELLED Flight Manuals Altimeter error Recommended Pilot s adjustable seat, backrest stops Recommended CANCELLED See / Loose jo-bolts in engine mounting frame-attachments Elevator trim-lever-box cracks and loose rivets 1000 hrs./ 2500 Ldgs Recommended CANCELLED See / Issue Page 3

4 / Loose rivets at the elevator outboard-hinge spacers Recommended CANCELLED See / Flight controls, loose taper pins Recommended CANCELLED See / Elevator trim cables - possible foul Recommended Inspection of tailplane, elevator, tab & attachments All See also / SB Vacuum pump failure Recommended Inspection of fuel-pressure-indication hose attachments Recommended CANCELLED See / Inspection of generator terminals Recommended CANCELLED See / Woodward propeller governor, drive shaft failure Alternative flexible hoses at main u/c brake units Recommended CANCELLED Woodward instructions CAA Only CANCELLED See / Elevator push/pull control-tube wear Recommended CANCELLED See / Rudder bar failure -Mklll Tyre pressures Recommended CANCELLED See / Calibration of Salmoiranghi ASI Only CANCELLED See / Increased clearance at engine baffles Recommended -2/ 3/ 20/ 21-26/ Rear spar cracks at fuel contents unit Recommended -Mklll IO-540 engine Islanders only Issue Page 4

5 / Defects in upper mtg brackets of wing engines -Mklll with mod NB- M-1147 not incorporated Serial Nos: C419 C Rudder trim-jack lower mtg bracket -Mklll Defective flap hinge attachments -Mklll Sangamo-Weston flap indicators Optional Inflation of u/c shock absorbers Recommended -Mklll deg droop-flap microswitch setting Improved aileron mass-balance attachment Sangamo-Weston tachometers Pt. No. S Aircraft made before 01/03/73 with Mod NB-M-430 incorporated -MkIII aircraft not incorporating Mod NB-M-627 -MkIII With tachometers Ser No.s up to and including B.B Raised to by Issue 2 Lockheed Landing Gear Only Issue Page 5

6 / Inspection & Strengthening of Flt. Comp. Seat backs -Mklll Defective flap-drive pick-up brackets Recommended -Mklll Defective seat locking mechanism of Flt. Comp. seats Engine mounting frame, weld inspection CANCELLED See / CANCELLED See / SB Elevator torque-tube corrosion CANCELLED See / SB Rudder-bar, lower mounting defects -MkIII Elevator trim cables - renewal -Mklll Rudder hinge brackets - Defects Incorrect riveting of wing bottomsurface laminations at Stn Torque loading, rear engine-mountingframe bolts Definitive modification standard for short-nosed Islander aircraft Propeller governor control - possible fouling Recommended CANCELLED See / CANCELLED See / -Mklll CAA Airworthiness Notice No. 82 -Mklll Lycoming Service Bulletin No. 381A CANCELLED See / Avoidance of damage to rudder control system Installation of Cleveland 8 in wheel to modified axle -Mklll Recommended CANCELLED See / Issue Page 6

7 / Duplication of electrical power supply to audio system Omission of drain holes from undersurface of rear fuselage Introduction of Avco-Lycoming widedeck engines -Mklll with modification NB-M-491 (aircraft with NB-M-809 are exempt) CANCELLED See / Rear engine-fire-detection system Torque-tightening of bolts, defects in undercarriage lower bracket Omission of lanolin protection from inside the undercarriage extension tubes -Mklll Recommended -Mklll Corrosion of engine mounting brackets CANCELLED See / SB NOT ISSUED Propeller blade-shank failure - rear engine Elevator trim mechanism, revised locking and bolt retaining method Air-intake hose inspection - IO-540- K1B5 engines Introduction of Talley Corp flap actuator as replacement for Edo-Air type Change of propeller designation upon introduction of feather-assist spring assembly Corrosion inside aileron massbalance-tube -Mklll Recommended CANCELLED See / IO-540 Engined Islanders Only Intro Mod NB/M/868 CANCELLED See / CANCELLED See / SB CANCELLED Not issued Clearance between aileron and shroud Recommended CANCELLED See / Issue Page 7

8 / Inspection & protection against electrolytic corrosive action - Control tubes Cracking of rudder stop structure -Mklll Engine tachometer calibration -Mklll Application of Hartzell Propeller Inc. Service Bulletin 118C CANCELLED See AD & / SB Intro of Stewart Warner oil-cooler CANCELLED See / Fracture of nosewheel-steering drivering lugs Installation of Weldon fuel pump A10050-D Introduction of Woodward governor allstainless-steel adjusting-shaft Reinforcement of Teleflex conduit swivel-attachment-brackets on engine controls Intro of Airborne Mfg Co de-icing pump with strengthened attachment flanges Examination of the left and right rudder bar pillar and slider tube assemblies Cracks in secondary structure around wing attachments -Mklll to Mod NB/M/410 CANCELLED -Mklll -Mklll -Mklll New Title at Issue 2, at Issue 3 a/c with Airborne deice pumps only Recommended CANCELLED See / Elevator mass-balance defect Introduction of a single-buckle safety harness with inertia-reel belt tensioning Defective filaments in Whelen rotating beacons Corrosion of rudder mass-balance-arm support-brackets CANCELLED See / SB.190 Issue Page 8

9 / Introduction of new combined Maintenance and Overhaul Manuals for Chloride Batteries Attachment of shock-absorber mounting flange to u/c leg tube CANCELLED See / Aileron mass-balance defects -Mklll Inspection of tailplane attachment brackets & surrounding structure at rear of pod Impulse coupling on Bendix S1200 Series Magnetos -Mklll CANCELLED Chafing of fuel feed pipe between engine driven pump & injector Cracks in front fuselage Keelmembers at joint with front bulkhead Assembly of spherical and selfaligning bearings in control rods where spun bushes are utilized Plug and socket connectors in airframe & propeller de-icing at engine firewall breaks Supersedure of Cleveland Brake Units (30-23A) and associated brake linings Chordwise cracks in swaged top skin of elevator trim tab Replacement of 20 swg rudder-bar pillar/slider tube at first pilot s position Corrosion inside aileron mass-balance tube (/SB.98 also refers) Application of Hartzell Propeller Inc. Service Bulletin 118A & subsequent Recommended -2, 3, 20 & 21 -Mklll -Mklll Recommended -Mklll -Mklll Not long-nosed Variants CANCELLED See / SB.142 -Mklll Damage to T/P skin & structure in L/E Possible foul of rudder drive lever & final drive rod-end in fin CANCELLED Cancelled by / SB.190 CANCELLED Superseded by SB104 issue 3 Issue Page 9

10 / Corrosion defects in main u/c shock absorbers of A/P mfg CANCELLED See SB Conversion of certain A/P main u/c leg units used on Islander a/c Failure of torque link pins in main u/c shock absorbers of A/P mfg, covered by NB-M-1390 CANCELLED at Issue Campaign Wire only issued Defective inflation mechanism on RFD life jackets Oversize Wing Attachment-bolts & flanged bushes Retention of internal support rings in main u/c leg tubes CANCELLED SB CANCELLED See / -Mklll Chloride Battery top to Mod 13 Recommended CANCELLED Fuel pump cooling-can alteration -Mklll Elevator trim-tab defects Alternative fuel grades for Avco- Lycoming O-540 and IO-540 engines Cracking of Hot/Cold Air Shutter in Carb Air Box Changes to Oxygen System to meet CAA requirements Improper installation of wing attachment pins -Mklll -MkIII with carburettor engines which do not incorporate NB-M-1112 O-540 Engines Only Replaces /SB.127 & Wire 136 O-540 and IO-540 Engines Issue Page 10

11 / Ball end in elevator trim jack NLG - Intro of Modified Fairey NLG Unit Stewart Warner oil-cooler defect promulgated by FAA Airworthiness Directive Major structural components - Fatigue Safe-Life Limits & long life inspections for the wing, fuselage frames, MLG extension tubes Defects in wing-engine nacelle structure around main u/c lower attachment brackets CANCELLED -Mklll Torque Link bushes in APPH NLG Flap drive-lever attachment defects Recommended Damage to wing-tip-tank fuel-contentstransmitter floats Cancellation of obsolete Service Bulletins Changes to Collins AP107 autopilot system to Mod NB/M/911 in conj. with Mod NB/M/ Wing-tip fuel-tank controls - improved operational features -MkIII with Mod NB-M-364-4R -4S -MKlll,, and (except -4) series aircraft which have NB-M-1117 and NB-M- 911 installed together with Mod NB/M/364 Issue Page 11

12 / Alternative voltage regulators to replace units no longer available Bendix fuel-injection systems - Inspection of fuel diaphragms Introduction of aircraft Technical Publications on Microfiche -Mklll -Mklll Technical Training for 1996 CANCELLED transferred to SL Landing-lamp selection switches - premature failure Pilot s individual sliding-seats - possible failure of seat backs RFD Service Bulletin 25-33; Testing of Polyurethane coated life-jackets Engine Speed Sensors Introd. of alternative components Pilots adjustable seats including individual sliding seats - inadvertent folding movement of seat backs Water leakage into cabin - improvements to wing/fuselage weather proofing Loose taper pins in Flight Control System Deterioration of Induction Air Filters in carb/injector air intake systems Recommended -Mklll,, and -Mklll Recommended -Mklll -Mklll Recommended -Mklll Intro App1 of Mod NB/M/312 Issue Page 12

13 / Inspection of main u/c upper torquelink attachment-lugs on FHL Pt. No. 3499H1 units Corrosion in wiper ring and bearing grooves at torque link end u/c cylinders - approved repairs Engine Mounts - Inspection for cracks & deterioration Inspection of main u/c upper torquelink attachments on FHL 3507 H Bendix RS & RSA fuel injectors - leakage at manual mixture-control idlecut-off CANCELLED See Fairey Hydraulics SB32-4 Recommended Barry Controls Mounts Only Water ingress into Magnetos Recommended -Mklll Fluctuating/inaccurate ASI readings - possible obstruction in pitot heads Fuel feed pipes to rear engine - possible chafe under fin leading-edge Methods of Compliance with Allison TP CEB 1190 in conjunction with PBN Mod NB/M/ Internal corrosion of elevator trim-tab operating-rod Combustion heater slide-bar controls - magnetization Hand turning of propellers on Avco- Lycoming Piston Engines King KR21 Marker Beacon Receiver - Enhanced visibility of outer (blue) marker lamp Recommended -Mklll Recommended -Mklll CANCELLED See Fairey Hydraulics SB32-7, 8 & 9 Title change at Issue 2 Recommended -Mklll CANCELLED See / SB.190 -Mklll Recommended Issue Page 13

14 / Revised scale/markings on TGT (TOT) indicators Introduction of asbestos-free brake linings, by Loral, for Goodyear type brakes Introduction of improved Connectors to battery vent Propeller lubrication - avoidance of grease hardening at low temperatures Potential failure of undervoltage sensor Pt. No. NB (Issue 1 to 5 incl.) Elevator trim-tab rigging - extended down travel Introduction of Slick magnetos by Textron-Lycoming Corrosion affecting primary structure - Continued Airworthiness of ageing aircraft in General Aviation use Product improvement - additional rivets in main u/c attachment flange for shock absorbers Elevator tip-fairing rib - stiffened attachments Powerplant ice-protection system - automatic selection of engine igniter Introduction of a resistor in the generator field circuit Vacuum/Dry air pumps - low service life -Mklll Intro Mod NB/M/1392 Recommended -Mklll Recommended -Mklll Recommended Recommended Recommended -Mklll Not -2, -2R and subsequent variants Issue Page 14

15 / Cabin portable fire-extinguishers - potential unserviceability through accidental discharge Nose-undercarriage-unit mounting - Improved support structure Propeller de-icing harness - Improved service life Cracking of tailplane front-attachment brackets Cracking of u/c top-block support structure Ground Equipment - Alterations to rudder rigging bar Possible accidental short circuit at rear of Pilots s Switch Panel - Preventive Measures Replacement of floats in Marvel- Schebler carburettors Mainwheel Assembly - Inspection of Brake-ring Disc sub-assembly Improved Starter-isolation Contactorcontrol Interference between Tyres and Brake units on Parker Hannifin (Cleveland) mainwheels Improved Main Fuse Installation F69 and F Cabin Portable Fire-extinguisher - Failure of operating trigger Crack Detection of Upper and Lower Torque Link Assemblies fitted to Fairey Main U/C Units Futair Passenger Seat-backs, Top and bottom hinges, sharp edges Recommended Recommended -Mklll -Mklll-1 -Mklll -Mklll Recommended -Mklll CANCELLED Not long-nosed models Recommended Recommended Recommended Recommended CANCELLED See Fairey Hydraulics SB32-10 Recommended Issue 100 End of Data Module Page 15

16 / Intake Heat Label on IO-540 Engined Islanders Recommended -2 / 3 / 20 / Chelton 21-4B Antenna - Corrosion Recommended -Mklll Rotary Fuel Pump - Non-conforming Regulating-valve Diaphragm Nosewheel Steering Drive-ring Failure -Mklll Cracking of Co-ordinator Power-input Lever on 250-B170C Engine Control System Allison 250-B17C Engine Assembly, Fireshield Retaining-nut Torque Mod NB/M/1271 Century Autopilot System, Elevator Trim Cable-splice - Wear and/or Fraying Engine and RPM Control Cables, Swivel-unit Mounting-bracket Failure Intro of Invalid ILS and Area Nav Lamps Audio Matching Unit, Enhanced Performance Janitrol B Series Heaters - Combustion Air-pressure Switch Replacement Combustion-Monitor Thermocouple Rudder Control Cables - Incorrect Assembly IO-540 Engined Islanders only CANCELLED -Mklll Recommended Recommended Recommended Aircraft C602 to C915, C2101 to C2267. Except C2115, 2260, 2264 Issue Page 16

17 / Teledyne Magneto Coils and Rotating Magnets Teledyne Magnetos - Inspection of Riveted Impulse and Stop Pins Lycoming Engines - Thermostatic Bypass-valve Inspection Starter/Generator - R/I Procedures A DC Generator System - Replace Type 10B1 or 10D1 Diodes A Generator System - Generator Inspection Allison B250 B-17C Engine CEB 1291 Py Tube Removal - Routing of Fire Sensor Main Landing Gear, Torque Loading of Attachment Bolts Wingtip Fuel Tank System - Additional Operating Procedures -Mklll with PBN Mod NB/M/256 Recommended with PBN Mod NB/M/ NOT ISSUED IO-540 and O-540 Lycoming Engines - Recall of Piston Pin Pt. No. LW Examine and Repair the Nacelle Box Structure at the Bottom Fitting of the Main Landing Gear Refer to Textron- Lycoming SB527C -Mklll Intro Mod NB/M/1571 It is known Generators to Mod NB/M/1148 have been incorrectly installed in lieu of the correct Mod NB/M/256 items Intro Mod NB/M/1577 In lieu of Flight Manual Temporary Revision Textron- Lycoming SB527C Issue Page 17

18 / Trislander Brake Torque Plates Refer to Parker- Hannifin SB7053 -Mklll, -Mklll-2, -Mklll-3 SB Wing Spar Caps - Inspection -MKlll MLG-Cancellation of the APPH SB ing SB Refer to APPH SB Main Landing Gear Torque-Links ing SB Refer to APPH SB Rudder Lower Hinge Doubler VHF Comms Antenna Plate - Examine Recommended SB SB Mod. NB-M Oil Tank Bracket-Examine Recommended Mod NB- M Control Column Sliding Tube - Examine -MKlll 244 NOT ISSUED Elevator Trim Cable Guards - Installation Recommended 246 NOT ISSUED 247 NOT ISSUED 248 NOT ISSUED Control Column Sliding Tube Mod NB-M Issue Page 18

19 / Nose Landing Gear Assembly 3501H2 and 3811H2, Chrome Plating - Examine Propeller and Engine-Intake Anti-ice Systems - Inspection and Modification Examine the Flap Shroud Skins and Rib Assemblies for Cracks Refer to Fairey (FHL) SB MKlll -4 Recommended -4R -4S Fuel Injection Servos - Repair ing a SB Refer to Textron Lycoming SB Propeller Hub - Inspection ing a SB Refer to Hartzell Propeller SB HC-SB Fuel Pump - Torque Tighten Relief- Valve -Screws Engine Magneto Impulse-Coupling - Inspection Recommended Refer to Textron Lycoming SB 529, with IO-540 Textron Lycming engines -MKlll with two blade propellers,, with IO-540 Textron Lycming engines,,, MkIII with Textron Lycming engines and Slick magnetos 256 NOT ISSUED SB. Refer to Fairey (FHL) SB Intro Mod. NB-M-1662 Pre-Mod NB-M-1637 SB. Refer to Textron Lycoming SB 532 SB. Refer to Hartzell Propeller SB HC-SB SB. Refer to Textron Lycoming SB 529 SB. Refer to Slick SB 1-98 Issue Page 19

20 / Engine, Fuel and Control - Allied Signal (Bendix) Fuel Control Unit and Power Turbine Governor - Internal Spring Replacement Year 2000 and other Time/Date related Anomalies Elevator outboard hinge, inboard bracket ing a SB Refer to Allison SBs TP CEB A and TP CEB A S Recommended -4S -MKlll -4S 260 NOT ISSUED RFD Service Bulletin BE Perform tests on the BE515 (Sarbe 6) Location Beacon RFD Service Bulletin SARBE Examine Sarbe 7 Antenna -MKlll -MKlll 263 NOT ISSUED Textron Lycoming Service Bulletin No 533A - Recommendations Regarding Accidental Engine Stoppage -MKlll 265 NOT ISSUED 266 NOT ISSUED Hartzell Propeller Service Letter HC- SL Propellers - Lubrication Procedures -4R -4S -MKlll SB. Refer to Allison SBs TP CEB A and TP CEB A Aircraft with Hartzell "HC" propellers. Issue Page 20

21 / Hartzell Propeller Service Letter HC- SL Propellers - Tachometers Textron Lycoming Service Bulletin No valve seat inspection Rolls-Royce Alert Commercial Service Letter Model 250 Engine, cautions for changes in engine noise Pitot static pressure head drain holes - clean Engine Controls - throttle friction adjuster - inspection -4R -4S -MKlll,, and Mk111-4R -4S Recommended -4S -MKlll -4S -MKlll Inspection of oleo attachment brackets -4R -4S -MKlll Removable access panels Inspection of Engine Mounting Brackets -4R -4S -MKlll Aircraft with Hartzell "HC" propellers. ing a Textron Lycoming SB Aircraft with the Rolls- Royce model 250- B17 engine SB190 and Mod NB-M 1594 Issue Page 21

22 / Alternative vacuum hose assembly Recommended -4R -4S -MKlll Emergency Exit Window Sealant -4R -4S -MKlll Flexible Hose Life Recommended -4R -4S -MKlll Inspect/Replace brake disc (Part No ) on aircraft with Main wheel assembly or 40-90B The Elimination of Component Parts that may contain Asbestos Cracking of Trislander Rear Engine Mounting Frame NB-51-H Cracking of Engine Mounting Frame NB Century 2000 Flight System Autopilot Computers - Intermittent Roll and Pitch Deviations Recommended -4R -4S -MKlll -MKlll -4R -4S -4R -4S -MKlll ing a Cleveland SB Issue Page 22

23 / Control Column Universal Joint - Supplies of Undersized Components Chelton Type 18-5 Antennas - Inspections Folding Passenger Seat Rear Frame - Inspection Alert Service Bulletin - Hartzell Propeller - Hub Replacement For Lycoming 540 Series Engines Service Bulletin - Textron Lycoming, Crankshaft Gear Retaining Bolt Steering Cable Nut and Bolt connection to Turnbuckle at Torque Shaft -4R -4S -MKlll Recommended -4S -4R -4S -MKlll -MKlll -MKlll -4S 290 NOT ISSUED Inspection of Access Panel Bolts -4R -4S -MKlll Control Rod to Elevator Trim Tab Lever Bolt Retainer See Hartzell Alert Service Bulletin HC- ASB See Textron Lycoming Service Bulletin Issue Page 23

24 / Pneumatic De-icer Boot Bonding Recommended -4R -4S -MKlll Textron Lycoming - Oil Pump Body Plug Inspection -MKlll Loss of Communication -4R -4S -MKlll Re-calculation of Battery Electrical Load Analysis Approved Tyres - Goodyear Flight Custom II and Flight Custom III Range Fatigue Lives of FHL Landing Gear Units VHF Communication KY 196B Transceiver - Modification of the ON/ OFF switch circuit Recommended -4R -4S -MKlll -4R -4S -MKlll -4S See Textron Lycoming SB 555 See CAA Flight Operations Department Communica tion (FODCOM 16/2002) Issue Page 24

25 / Control Surface Attachment Points - Inspection Fuel pumps approved for use on Islander aircraft Inspection of the Horizontal Stabiliser Attachment Plates, Bolts and Anchor Nuts Elevator final drive control-rod - Examination Use of High Thermal Stability or Third Generation Oils Engine Power and Condition Levers Inspection - -4R -4S -MKlll - -4R -4S -MKlll - -4R -4S - -4R -4S - -4R -4S -4R -4S Revised Nosewheel Tyre Pressre - -4S Flap Drive Lever Attachments - Inspection -4R -4S -MKlll 308 Not Issued Model 250- B17 engines Issue Page 25

26 / Greases Approved for use on Isalnder and Trislander Aircraft Pitot/Static Pressure Head - Inspection and Test -4R -4S -MKlll -4R -4S -MKlll Fuel Control Unit - Inspection -4R -4S 312 NOT ISSUED Elevator Tip Assemblies - Inspection Rudder Pedal Assemblies - Inspection -4R -4S -MKlll All Turbine Series Islanders fitted with Model RR 250 B17 Series Turbo prop Engines - Enhanced Power Turbine Elevator End Tip - Inspection -4S GRP Elevator Tip - Inspection Rudder Bar Adjustment Pedals - Inspection Forward Baggage Bay Door - Inspection Horizontal stabiliser Attachments - Inspection 321 To Be Issued -MkIII -MkIII -MkIII Engine oil Tank - Inspection Series Issue Page 26