BOMBARDIER AEROSPACE MODIFICATION SUMMARY PACKAGE 1 CERTIFYING AUTHORITY NO . 2 MODEL I TYPE 3 MODSUMNO . COMPLETE D 4 S H EET 93·Q·02 CL-670/CL-690 15670528200033 1 OF7 5 CURRENT A A-f A-?.. REVISION6 PRIME DESIGN ACTIVITY B OMBA RDIER INC .D 3 AB48 7 SUPPLIER NAME AND CAGE CODE BOMBARDIER IN C., MONTREAL QJ 88308 LEARJET INC . D 2421o BA (88308) BOMBARDIER INC ., DOWNSVIEW 0 71867 SHORT BROTHERS PLC D K4585 8 TITLE 10 APPROVED INITIATING DOCUMENT INBD/OUTBD MLG DOOR FWD AND AFT HINGE LOW DCP CLEARANCE PCR 9 MAJOR ASSY OR COMPONENT AFFECTED CAR 16409 MLG DOOR INSTALLATION BASKET MODSUM D S EE INDIVIDUAL AUTH DOCUME NTS 11 DESCRIPTION OF MODIFICATION This IS MODSUM modifies the MLG Outer Door CC670-1 0550 to enlarge fwd and aft hinge cutouts. 12 REASON FOR MODIFICATION To allow more clearance between Fwd Member (CC670-10570) & Aft Member (CC670-10571) and MLG Outboard door (CC670 - 10550) . Make all different configurations of the Outboard door (CC670-1 0550) fully interchangeable . 13 ENGINEERING REMARKS 14 RELAT ED MODSUM 16 PRODU CT ION EFFECTIVITY N/A CC670T22205 CC670T1 0905 15 ENGINEERING VALIDITY 17 RECOMMENDED SERVICE EFFECTIVITY 1 0002 - 1 0999 10002- 10217 15001 - 15990 15oo2 -15043) 15qq I 18 CLASS 19 AIRWORTHINESS CLASS I FICATION c LEVEL 1** D L EV EL 2* D LEVE L 3 QJ ------

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-- - BT02 06·02A MW9 7 R EV 2003·09 .. D CCP OR •A C RL & SOC OR FAA FO R M 811 0·3 RE QU IRED © 2003 Bombardier Inc.BOMBARDIER AEROSP A CE MODIFICATION SUMMAR Y PACKAGE 3 MODSUMNO. 4 S HE ET AUTHORI Z ATION SH E ET IS670528200033 2 -- - 5 CU RRE NT R EV ISIO N A AI A-2- 21 ORIGI N AT O R 22 D ES I GN ------- 23 DES I GN A U TH O R ITY .... 24 PP &C 5 C U RRE NT R EVI SIO N - - - - · 21 O R IGIN AT O R

**~** 22 DE SIGN 23 DESIG N A U TH O R ITY

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4REV 28 A IR WO RTHIN ESS CLASS IF ICATION ""LEVEL 1 'LE VEL 2 LEVEL 3 29 DiSCIPLINE CODE 30 CEAT AUTH DES REP S IGNATURE 31 CEAT AUTH **nF~** RI=PNAMF l4 REV 28 AIRWORTH I NESS CL ASSIFICATION I .. LE V EL 1 ' LE VEL 2 L EVEL 3 I 29 D ISC IPLI NE COD E 30 CERT AUTH

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MODIFICATION SUMMARY PACKAG E 3 MODSUMNO. 4 SHEET 15670528200033 3 **~...:.**BOMBARDIER AEROSPACE MODIFICATION SUMMARY PACKAGE 3 MODSUM NO . 4 SHEET REQUIRED I AFFECTED CHECKLIST 15670528200033 4 5 CURRENT A A1 P.- '2- REVISION26 REQUIRED I AFFECTED CHECKLIST ITEM YES NO FLA G ITEM YES NO F LAG NOTE NOTE AIRCRAFT MAINTENANCE MANUAL (AMM) ..J ISTR ..J AIRWORTHINESS CONTROL DOCUMENT ..J MAINTENANCE SIMULATOR ..J CABIN PRESSURE CONTROL SYSTEM ..J MASTER MINIMUM EQUIPMENT LIST ..J COCKPIT DEMONSTRATOR ..J MODIFICATION KIT PARTS ..J COMPONENT MAINTENANCE MANUAL (CMM) ..J PILOT'S MANUALS ..J CONFORMITY REQUIRED ..J POWER PLANT INT TEST RIG ..J CUSTO MER TRAINING ..J PROTOTYPE EVALUATION ..J DEICE I DOORS ..J PROOF INSTALLA T ION ..J

ECS SYSTEM TEST ..J QUALIFICATION TESTING ..J FATIGUE COMPLETE ....; SERVICE ACTION ....; FATIGUE FLAP ..J SERIALIZATION LIST ..J FATIGUE HORIZONTAL STABILIZER ..J STATIC MISCELLANEOUS ..J FATIGUE MIS C ELLANEOUS ....; SOFTW ARE ..J FATIGUE NACELLE ..J SPARES ..J

FLIGHT MANUAL ..J S TATIC COMPLETE ..J FLIGHT SIMULATOR ..J STRESS REP ORTS ..J FLIGHT TEST PROGRAM IA ESU L TS ....; STRUCTURAL REPA IR MANUAL (SAM) ....; I FLIGHT TRAININ G D EVICE ..J WIRING DIAGRAM MANUAL (WDM) ..J

FUEL TEST RIG ..J T Y PE INSPECTION AUTHORIZATION ....;

FUN CT IONAL TEST ENGRG REQTS (FTER) ....; A ILLUSTRATED PARTS CATALOGUE ( IPC) ....; ill INTERCHANGEABILITY & REPLACEABILITY LIST ..J IRON BIRD ....; 27 INSTRU CTIONS 6 AI PC to be modified to reflect new interchangeability once this ISModsum is incorporated. • CC670 - 10550-5, -7, -7PP and -9 are 2 ways interchangeable .

@ • CC670-1 0550-6, -8, -8PP and -1 0 are 2 ways **interchan~able** . • CC C.. -=tO **10~~**

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--- BT0 20 6-03 MW 97 R EV 2003-09BOMBARDIER AEROSPACE MODIFICATION SUMMARY PACKAGE 3 MODSUM NO . 4 SHEET CONTINUATION SHEET IS670528200033 5 5 CURRENT REVISION A A1 A-2. PARTS REQUIRED: N/A SPECIAL TOOLS: N/A PROCEDURE : **~**

1. MLG Outboard door affected by this modification: • CC670-10550-5, -6, -7, -7PP, -8, -8PP

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**-2. -~}-**  4 2. Inspect the MLG Outboard door (CC670-10550) to verify if the enlarged cutouts were incorporated . Use Fig. 1 view A, B & C for reference dimensions. If door was already modified omit step 3 of this procedure. 3. Modify Outboard MLG Door (CC67Q-10550) as follows: A. Remove the Outboard MLG Door per AMM TASK 32-12·01-000-801-A01. B. Trim the shaded areas as shown on view A,B & C C. Deburr. D. St1rface finish of re .. orked **ed~es** to be 125\/ or better. A<.HIEII'G "' f! Mo o· rl-'( **,<'~«;"J'l(e** FINIIH t.API/11(,.. lfOD 01( ,. 00 G. t..» ALI.IMI/Vt"iN ox **·~t>** ,.,..,6(. E. Perform liquid penetrant inspection per NDTM 51-20-08 or eddy current inspection per NDTM 51-20-06 of reworked areas. F. Touch-up reworked area A023 per SRM 51-21-16.

M\ **~ldentify** as follows: 7 **~** -h-.;, • CC670-10550-5, -7, -7PP to be **~identified** as: IS670528200033-1 using indelible ink beside name plate. _ -+ • CC670-10550-6, -8, **-i~P** to be **~identified** as: IS670528200033-2 using indelible ink beside name plate . H. Re-Install the Outboard MLG Door per AMM TASK 32-12-01-400-801·A01

1. Upon completion of this In Service Modsum , make an entry that conforms to local regulatory requirements in the applicable logbooks. GENERAL NOTES: A. All work must be accomplished and signed off by qualified personnel as required by local regulatory authorities . B. This rework is limited to the components as specified in IS670528200033 C. Weight & Balance: No change D. Electrical load Analysis; No change E. Interchangeability :2 ways interchangeable. BT 0 206-05 MW 97 REV 2003-09BOMBARDIER AEROSPACE CONTINUATION SHEET 5 CURRENT REVISION A BT 02 06 ·05 MW9 7 REV 2 00 3 -{) 9

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MODIFICATION SUMMARY PACKAGE 3 MODSUMNO. 4 SHEET 18670528200033 6 **~ -~_**  **1_;::.:::: ===**  **=== ===::.:::::::::===**  **~** FIGURE 1 View Looking Inboard VIEW A

© R . 28 2 R.CSBOMBARDIER AEROSPACE CONTINUATION SHEET 5 CURRENT REVISION A BT0 206-05 MW 97 REV 2003-09

Ai **A~Z.** © ©" SHADED AREA S SHOWS

MATL TO B E R E M OVE D (IF N ECESSARY) VIEW B (PRE MOD) 1.6>L

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MODIFICATION SUMMARY PACKAGE 3 MODSUM NO . 4 SHEET 15670528200033 7 VIEW C (POST MOD)