ADs & MANDATORY SERVICE BULLETINES W.O: ALERT - MANDATORY RECOMMENDED OPTIONAL

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1 EN rev EASA A-AD rev ACTION PART REP DUE REMARK ACTION TAKEN WO DATE MECH ALB S.C YR 1 INSP OF 369D M/R STRAP PACK LAMINATIONS I 1 1 NA SUPERSEDED BY EN Nov-89 2 Insp.of Spare M/R Blade Root Fit-ting Assemblies Insp. Lead-Lag Link Assy I 1 1 NA SUPERSEDED BY EN Nov-89 3 INSP. OF OVERRUNNING CLUTH SPRAG ASSEMBLY I 1 1 C.W INCORP IN HMI CHECK LIST 16-Nov PERIODIC INSPECTION OF 369D25510 M/R DRIVE SHAFT I HRS INSP, INCORP HMI-2 CHAP 5 C.W FROM FACTORY 5 Pilots comp, center pass seatlap belt installation check. I 1 1 DAILY PRE FLIGHT C.W FROM FACTORY 16-Nov-89 6 FUEL SYSTEM SERVICONG, MAINTAINENANCE AND TESTING I 1 1 AFTER MAINTENANCE C.W FROM FACTORY 16-Nov-89 7 Insp of 369A Fuel Vent Hose I 1 1 C.W FROM FACTORY 16-Nov-89 8 TGB INSTAL. AND REPLACEMENT OF PROTECTIVE SLEEVE I 3 C.W FROM FACTORY 16-Nov-89 9 Insp and Overhaul of 369A Fuel Shutoff Valve I 1 1 C.W FROM FACTORY 16-Nov Insp of 369D25709 and 369D25710 M-ain-Trans Oil Line, Replacement. 16-Nov-89 I 1 1 C.W FROM FACTORY 16-Nov Installation of Coll.Stick SupportBracket I 1 1 C.W FROM FACTORY 16-Nov Insp and Possible Replacement of 369A M/R Swashplate Bearing Insp of 369A7011 Long Mixer Ctr RodReplace. 369D Doubler I 1 1 C.W FROM FACTORY 16-Nov-89 I 1 1 C.W FROM FACTORY 16-Nov Pull Test of 369A /603 Fuel Shut-Off Valve Control Cable I 1 1 C.W FROM FACTORY 16-Nov Removal of Gray Coating from 369D /-3 Tail Rotor Hubs I 1 1 C.W FROM FACTORY 16-Nov Alterartion of Crew Compartment Seat Back Assemblies I 1 1 C.W FROM FACTORY 16-Nov Riviting Tip Cap to Tail Rotor Assy I 1 1 C.W FROM FACTORY 16-Nov One-Time Insp of T/R Blade Leading Edge Abrasion Strip Bonding /PF check I 1 1 DAILY PRE FLIGHT, INCORP IN PFM C.W FROM FACTORY 16-Nov Corrosion Removal-M/R Drive Shaft ID I 1 1 C.W FROM FACTORY 16-Nov Riviting Tail Rotor Tip Cap to Bla-de I 1 1 C.W FROM FACTORY 16-Nov Unauthorized Helicopter & Spare Parts I 1 1 C.W FROM FACTORY 16-Nov Non-Airworthy Clutch Assemblies I 1 1 C.W FROM FACTORY 16-Nov M/R Cooling Instl Bracket Re-place-ment I 1 1 C.W FROM FACTORY 16-Nov Insp of 369D27514/15 T/R Bellcrank I 1 1 C.W FROM FACTORY 16-Nov Insp and Rework of A Fargo T I 1 1 C.W FROM FACTORY 16-Nov Insp of 369D25620/-3/24 Cooling Fan I 1 1 C.W FROM FACTORY 16-Nov-89 Page 1

2 EN rev EASA A-AD rev ACTION PART REP DUE REMARK ACTION TAKEN WO DATE MECH ALB S.C YR D28318 OIL TANK FILLER NOZZLE STRAINER ASSY I 1 3 OPT. EQUIPMENT C.W FROM FACTORY 16-Nov EON SEAT BELT REMOVAL I 1 1 C.W FROM FACTORY 16-Nov UNITED INSTRUMENT, INC. ALTIMETER CHECK I 1 1 C.W FROM FACTORY 16-Nov INSTALLATION /INSP OF T/R D.S AFT FAIL SAFE DEVICE I 1 1 C.W FROM FACTORY 16-Nov T/R Elastomeric Bearing Shimming Proc I 1 1 C.W FROM FACTORY 16-Nov Fabrication and Instl.of 369D25704 Oil Flexline Hose in M/R Trans Oil st DAILY PRE-FLIGHT EAMINATION OF M/R BLADE LEADIND EDGE ABRASION STRIP BONDING One Time Insp of 369D25125/-11 M/T Tail Rotor Output Drive Pinion Shaft I 1 1 C.W FROM FACTORY 16-Nov-89 I 1 1 DAILY PRE FLIGHT C.W INCORP IN AFM PFC 16-Nov-89 I 1 1 C.W FROM FACTORY 16-Nov Insp of 369D25132/-5 M/T Output Shaft Assembly Ring Gear Carrier I 1 1 NA OLD TYPE GEAR, 300 HRS INSP C.W FROM FACTORY 16-Nov A8010 Engine Oil Pressure And Tor-que Tube Pull Test I 1 1 C.W 16-Nov Start Pump Wiring Routing and Fuel Quantity Sender Inspection I 1 1 C.W 16-Nov INSP OF T/R TRANS MOUNTING STUD IV 1 1 TORQUE CHECK 100 HRS C.W INSP, INCORP INSP CHECK LIST 40 1 Rework of Horizontal Stabili-zer Assy I 1 1 C.W 16-Nov Replacement of 369A8442 Basic Latch Assy on the Particle Separator Door M/R BLADE FITTINGS & LEAD LAG LINKS II M/R BLADE FITTINGS & LEAD LAG LINKS I 1 1 NA I 1 1 C.W 16-Nov HRS INSP INCORP IN HMI-2 CHAPTER HRS INSP INCORP IN HMI-2 CHAPTER 5 NA DUE TO MR BLADE AND LEAD LAG PN INSTALLED NA DUE TO MR BLADE AND LEAD LAG PN INSTALLED 43 2 Insp and Replacement of 369A1602 T/R Fork Bolt I 1 1 C.W 16-Nov M/R HUB STRAP PACK LAMINATION INSP AND TRI FLOW WASH PROCEDURE I 1 1 C.W IN OP CORROSIVE ENVIROMENT 45 Main Rotor Blade Upper and Lower Tra-iling Edge Weight Rework I 1 1 C.W 16-Nov INSP. OF 369A5352 OUTHER RACE OF OVER-RUNNING CLUTCH ASSEMBLY 369A /41 One-Time Insp. of 369H5660 Engine to Transmission Driveshaft Coup-lings One-Time Insp and Rework of 369A7-007,7009/7011/7012 Main/T/R Control Tu-bes One-Time Insp. of 369A8352,369H830-6/2-5/24-6/and 369D28651 Aeroquip Hose C.W. I 1 1 NA SN NA DUE TO SN 16-Nov-89 I 1 1 C.W 16-Nov-89 I 1 1 C.W 16-Nov-89 I 1 1 C.W 16-Nov One-Time Insp.ofFour-Bladed T/R Hub Assembly I 1 1 C.W 16-Nov One-Time Insp.of 369D25420 T/R Tr-ans.Output Shaft Duplex Beraings One-Time Insp.of Emergency and Uti-li-ty Float Skid Tube Extension As-sembli I 1 1 C.W 16-Nov-89 I 1 1 NA NA NOT INSTALLED 16-Nov-89 Page 2

3 EN rev EASA A-AD rev ACTION PART REP DUE REMARK ACTION TAKEN WO DATE MECH ALB S.C YR 53 One-Time Insp.of 369A5358 Lock-washerin the OV.Clutch Assy and Splines I 1 1 C.W 16-Nov Conversion to 369A OV.Clutch I 1 1 C.W 16-Nov INSTL OF OIL FLOW RESTRICTION DEVICES INTO THE ENGINE OIL AND TORQUE PRESSURE SENSING SYSTEM INSPECTION AND MODIFIION OF PN 369D292028, AFT PASSENGER STEP ASSEMBLIES One-Time Insp.and Replacement of AirIndustries MS Bolts in MR One-Time Check/Periodic Insp/ Replace-ment of T/R Swashplate Brg set One-Time Replacement of 369A9817Polycarbonate Cover Assemblies I 1 1 C.W 16-Nov-89 I, II 1 2 C.W WITH PART III RELEASES REQ. C.W PART III, P.C.W PART I, II 28-Feb-91 I 1 1 NA NA DUE TO AC SN 22-Mar-90 A&P I 1 1 C.W 30-Mar-90 A&P I 1 1 NA NA DUE TO INSTALLATION MISSING 30-Mar-90 A&P One-Time Replacement of T/R Blade Pitch Arm Bolt Attaching Nuts I 1 1 C.W 23-Jul-90 A&P One-Time Torque Chech and Insp.of M/R Blades I 1 1 C.W 10-Aug-90 A&P One-Time Insp.of 369D25623 Oil Coo-ler Blower Belt I 1 1 C.W 17-Aug-90 A&P ONE TIME INSDTAL. OF 369D WARNING DECALS IN THE ENGINE COMP AREA I 1 1 C.W 17-Aug-90 A&P INSP OF LEAD LAG LINK ATTACH NUTS I 1 1 DAILY PRE FLIGHT C.W INSP, PREFLIGHT CHECK INCORP RFM 4-Oct Insp.of 369D25434 T/R Input Gears-haft in the T/R Gearbox SN I 1 1 NA NA DUE TO COMP PN INSTALLED 20-Dec One-Time Insp.of 369H8407 Engine Bleed Air Tube Flexible Area I 1 1 C.W 20-Dec One-Time Reinstallation of the 369A Tail Rotor Fork Bolt I 1 1 C.W 20-Dec PRE-FLIGHT CHECK AND ONE TIME INSP OF T/R BLADES I 1 1 DAILY PRE FLIGHT C.W INSP, PREFLIGHT CHECK INCORP RFM 26-Mar One-Time Rework of Main Transmiss-ion Oil Cooling Fan Mounting Bracket ONE TIME ADDITION OF RIVITS TO TAIL ROTOR ABRASION STRIP I 1 1 NA NA DUE TO PN INSTALLED 28-Feb-91 I, II 1 1 C.W PART II, P.C.W PART I 26-Mar One-Time Replacement of Diodes With Transzorbs I 1 1 NA NA DUE TO AC SN 12-Mar Insp.of OV Clutch Outher Race. With SNs Between I 1 1 C.W 3-Apr INSP. REWORK OF FUEL VENT SYSTEM I HRS INSP AFTER AC TSN 2400 HRS C.W MOD OF VALVE INSP. REWORK OF FUEL VENT SYSTEM II C.W MOD OF VALVE 3-Apr One-Time Inspection/Rework of Engine Air Inlet Area I 1 1 C.W 6-Aug Main Rotor Blade Inspection/Replacement I 1 1 C.W 6-Jul FUEL PRESSURE SWITCH INSP. REPLACEMENT I 1 1 NA C20R, CECO FUEL PUMP NA DUE TO COMP SN 6-Jul FOUR WAY TRIM SWITCH REPLACEMENT I 1 1 C.W INSTALL A SWITCH 10-May-94 Page 3 3-Apr-92

4 EN rev EASA A-AD rev ACTION PART REP DUE REMARK ACTION TAKEN WO DATE MECH ALB S.C YR T/R SWASHPLATEW LOCK WASHER II 1 1 TORQUE CHECK 100 HRS C.W INSP, INCORP INSP CHECK LIST 79 FUEL LINE TO FIREWALL CONNECTOR MOD I ONE TIME C.W 13-Mar T/R BLADE ABRASION STRIP MODIFIION I 1 1 CHECK 100 HRS C.W 8-Feb T/R BLADE ABRASION STRIP MODIFIION II MOD C.W MOD 15-Jun MAIN ROTOR BLADE ROOT END INSPECTION II 1 1 Part II repetive 100 HRS C.W INSP, INCORP INSP CHECK LIST MAIN ROTOR BLADE ROOT END INSPECTION I 1 1 ONE TIME C.W 12-Dec MR OUTPUT DRIVE GEAR INSP I 1 1 NA ONE TIME NA BY SN, 9-Dec OVERRUNNING CLUTCH INSP I 1 1 NA 369D,E,F,FF-5OON NA DUE TO CLUTCH PN 19-Jun MAIN ROTOR TRANS. ACCESSORY DRIVE INSP. I 1 1 NA 369D,E,F,FF-5OON NA DUE TO MGB PN 19-Jun INPUT COUPLING SHAFT D/A NOT INSTALLED I 1 1 NA 369D,E,F,FF-5OON NA DUE TO COUPLING PN 19-Jun T/R BLADE LEADING EDGE INSP I 1 1 PREFLIGHT CHECK INCORP. PFM C.W INSP, INCORP INSP CHECK LIST M/R BLADES CHECK CRACKS D/A PER SN I 1 1 NA 369D,E,F,FF-5OON NA DUE TO PN AND SN INSTALLED 20-Mar OIL COOLER BRACKET, REPLACE 369F TO PN 369F I 1 1 NA 369F NA DUE TO BRACKET PN INSTALLED 6-Jul SOCKET CONTACT ASSEMBLY INSP I 1 1 NA 369E,F,FF-5OON NA DUE TO AC SN 6-Jul ENGINE FUEL FILTER PRESSURE SWITCH REPLACEMENT I NA 369D,E,5OON NA, BYE ENGINE TYPE INSTL 8-Mar CHECK TR FORK I 1 1 PN 369D C.W ON FOUR BLADED T/R, RIDGES FOUND 14-Jul CHECK TOT-INDIOR CALIBRATION I 1 1 PCW TOT IND PN: 369D C.W AT AC TT HRS LANDING GEAR STRUT INSPECTION AND FAIRING MODIFIION M/R BLADE ASSEMBLY TORQUE EVENT INSPECTION, EACH 35 HRS & 200 TE MAIN TRANSMISSION BONDING JUMPER INSPECTION AND REWORK I 1 1 MOD C.W 5/18/2002 C.W INSP, INCORP INSP CHECK LIST I 1 1 ALL MD & M/R BLADES C.W TE INSP, UPDATED COMPUTER RUN FOLLOW UP LIST I 1 1 NA ALL F TYPES NA DUE TO TRANSMISSION PN 26-Sep T/R BLADE LEADING EDGE INSP, RIVIT INSTALLATION I 1 1 NA BLADES NA DUE TO PN INSTALLED 98 ONE TIME INSP. OF THE OIL COOLER BLOWER, DRIVE PULLEY INSTALLATION I 1 1 NA SN 0568E &0571E NA DUE TO AC SN T/R BLADE ONE TIME INSPECTION I 1 1 C.W CHECK, BLADES MARKED 1-May OIL COOLER BELT INSTALLATION I INSPECTION OF PN 369D292028, AFT PASSENGER STEP ASSY, ON ETENDED L/G ASSY INSPECTION OF SHORTS EDGE MARGIN CONDITION ON 369D23500 TAILBOOM ASSENBLY ALL BELTS MFG BEFORE APRIL 2008 C.W. CHECK OF BELT INSTALLATION I 1 1 CHECK IF INSTALLED C.W INSP IN AC LOION I 1 1 CHECK PN & SN NA DUE TO SN INSTALLED Page 4. Christopher D. Christopher D A&P Robert Neitzel

5 EN rev EASA A-AD rev ACTION PART REP DUE REMARK ACTION TAKEN WO DATE MECH ALB S.C YR 103 KAMATICS SHAFT AND COUPLING OVERHAUL PROGRAM I 1 1 CHECK PN & SN C.W ASL UPDATES WITH TBO TIMES 104 REPLACEMENT OF MOBIL SHC626 WITH MOBIL AGL I 1 1 MGB & TGB AM SB AM SB AM SB TAIL ROTOR BLADE ASSEMBLY CHECK "ALL PN" AND MD CERTAIN PN MRH PITCH LINK UPPER BRG PN 369A1011 INSP. AND REPLACEMENT MRH LEAD LAG LINK ASSY INSPECTION AND DAILY PRE- FLIGHT CHECK AFT POSITION AND ANTI COLLISION LIGHT MOUNTING INSPECTION, REPLACEMENT AND REPAIR REMOVABLE COP GAS PRODUCER CTRL COLLECTIVE STICK TUBE ASSY TORSION BAR PN 369H REPLACEMENT ONE - TIME INSPECTION OF THE COPILOT GAS PRODUCER CONTROL GEAR SHAFT ASSEMBLY ONE -TIME INSPECTION OF FUEL PUMP HARNESS ROUTING AND DECAL INSTALLATION ECHANGE OF ENGINE BAY DOOR LATCH ASSEMBLIES WITH MISSING LOCKWIRE HOLE TAILBOOM - INSPECTION OF AEROMETALS TAILBOOM STIFFENER I 1 1 NA I 1 1 I 1 1 NA I 1 1 NA P/N 500P to incl MT, I and IT ROD END PN: 369A1011 PN: 369D21008 PN: 369H /-53, AND SN PREFI ; E thru 0621E, 0186FF thru 0250FF ROD C.W AT EACH OIL SERVICE, INCORP INSP CHECK LIST NA DUE TO T/R BALDE PN INSTALLED IS C.W DATE CHECK, NA DUE TO DATE IND. ON BRG NA DUE TO SN INSTALLED I 1 1 NA 0615E, & 0192FF thru 0199FF NA DUE TO AC SN NA DUE TO AC SN AND INSTALLATION I NET 100 HRS INSP C.W. INSP. FOR LOCTITE ON SHAFT I NET 100 HRS INSP C.W. INSP AND DECAL INSTALLATION I LATCH PN: V951L04-13BP, 51L1-3H3AA, 51L1-33AA I 25 ASB BEFORE C.W. INSP C.W. INSP FOR LOCKWIRE HOLE & WIRE INSTALLATION JNB Jan Dec May Dec TGB TO TAILBOOM - INSPECTION OF BOLT LENGTH I 25 1 STC SH5055NM-SH4801NM NA DUE TO PN INSTALLED 16-Nov-00 M/R BLADE FOLDING PIN LIFE DEFINITION; PN I 1 ASB LIFE LIMIT 369D-E; 7600 HRS C.W ASL UPDATE TO SAME LIFE LIMITS AS MDHC LIMITS AND INSP SCHED EL M/R BLADE; CHECK RIBS IN BLADE TIP AREA I 1 1 C.W FROM FACTORY 16-Nov TAIL ROTOR BLADE PN369D21640/21641/21642/ , & 500P3100/3300/3500 ALL DASH NO, NEW LIFE SET TO 400 HRS I 1 1 NA MADE, 400 HRS LIFE NA DUE TO PN INSTALLED MAIN ROTOR BLADE I 1 1 NA NA DUE TO BLADE PN 16-Nov AUTOMATIC REIGNITION SYSTEM I 1 1 C.W FROM FACTORY 16-Nov TAIL ROTOR DRIVE SHAFT COUPLINGS I 1 1 C.W FROM FACTORY 16-Nov GOVERNOR LEVER CONTROL ROD I 1 1 C.W FROM FACTORY 16-Nov INSTAL PLACARDS FOR CHADWICK AU TANK C-20 I 1 1 NA KIT NOT INSTALLED 16-Nov VIKING " GAJON" ETERNAL CARGO POD ; INSP I 1 1 NA OPT. EQUIPMENT NA KIT NOT INSTALLED REMOVE HARD POINTS I 1 1 NA FLIGHT TRAILS NA KIT NOT INSTALLED TRANSPONDER CHECK SN AND MODIFY I 1 1 KING KT76A NA DUE TO PN INSTALLED M/R BLADE INSPECTION I 1 ASB M/R BLADE ASSEMBLY TORQUE EVENT INSPECTION, EACH 35 HRS & 200 TE I 1 ASB PN 500P /301 & 500P HRS INSP, ON ALL MD & BLADES NA DUE TO PN INSTALLED ON HCP AT THIS TIME IS PN 500P C.W EACH 35 Hrs & 200 TE, INCORP. IN ASL FOLLOW UP HNFS SE PAN AT-02 SE LGD AT- SE AT-35 SE NIT-9 SE LGD AT SE.MG Page 5

6 EN rev EASA A-AD rev ACTION PART REP DUE REMARK ACTION TAKEN WO DATE MECH ALB S.C YR M/R BLADE CHECK, 100 HRS INSP I 1 1 NA 500P /-503 NA DUE TO M/R BLADE PN INSTALLED IS 500P T/R BLADE TIP WEIGHT RETENTION BOLT INSP I 1 1 NA DUE TO BLADE PN INSTALLED IS T/R BLADE CONTROL ARM BUSHING SEALING I 1 1 NA DUE TO BLADE PN INSTALLED IS T/R BLADE CONTROL ARM BUSH I 1 1 PCW PCW AT AT MODIFIION T/R BLADE ABRASION STRIP I 1 1 NA DUE TO BLADE PN INSTALLED IS OS T/R BLADE PITCH CONTROL ARM CORROSION INSPECTION I 1 1 ONBOARD SYSTEM CARGO HOOKS - IMPORTANT CHECK OF LOCKING SYSTEM BEFORE FLYING WITH CARGO HOOK LOAD I P /-301 & 500P /- NA DUE TO BLADE PN INSTALLED IS 701 RIGGING THE MECHANICAL RELEASE C.W ALL HOOK PN, CHECK CABLE FREE PLAY IN HANDLE & MECHANISM HC-WO * Page 6

ASB AC. HTC,Part number (P/N) 500P and -103, or MDHI P/N 369D , -503, and -505

ASB AC. HTC,Part number (P/N) 500P and -103, or MDHI P/N 369D , -503, and -505 MANDATORY SERVICE BULLETINES "ASB" N650AG 369HM HUGHES "500C" PAGE 1 of 1 Bi-We SB AD ACTION PART REC F. DUE QAT 2016-05-09 AM SB-1103 2016-04-15 ONE -TIME INSPECTION OF FUEL PUMP HARNESS ROUTING AND DECAL