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(Click for frequent words.) 55 Beech Aircraft 54 Boeing 53 Convair 51 aircraft 51 McDonnel Douglas 49 Lockeed Martin 49 Aircraft 48 Vortex Merger Sub 48 Aeronca 48 Boeing #-# 48 Lockheed Aircraft 47 Aerospatiale 47 De Havilland Comet 47 Sabreliner 47 GE CF6 47 airframe 47 F/A-#E 47 Shenyang Aircraft 47 Ercoupe 47 Lockheed 47 Fairchild Dornier 47 airplane 47 Hawker Siddeley 47 defunct Vasp airline 46 USAir 46 Beech #D 46 Cessna 46 Turbo Mallard 46 airline Avianca 46 Chance Vought 46 Xi'an Aircraft 46 turboprop airplane 46 Sundstrand Corp. 46 Litton Industries 46 reinspect wiring 45 turboprop 45 horizontal stabilizers 45 AH #D Apache Longbow 45 Grumman Aircraft 45 Amsec LLC 45 Piper Navajo Chieftain 45 turbo prop plane 45 Cessna #B 45 Sundstrand 45 planes 45 Stratocruiser 45 Consolidated Vultee 45 twinjet 44 Embraer Brasilia 44 F 4s 44 Tu #B 44 Fokker F 44 Colombia Avianca 44 Cessna Citation Columbus 44 jetliner 44 PB4Y 44 Embraer ERJ 44 turbo prop 44 JT8D 44 Boeing #NG 44 Lycoming Engines 44 twin engine 44 Boeing #-#/# 44 Cirrus SR 44 airplanes 44 plane 44 Avro RJ#s 44 Airbus A# 44 DeHavilland Twin Otter 44 DC 9s 44 Hawker Beech 44 Sosoliso Airlines 44 Learjet 44 Air Lines 44 Piasecki Aircraft 44 Cirrus Design Corp. 44 Grumman 44 Vertol 44 empennage 44 MD #F 44 TWA 44 Fokker 44 Large Cargo Freighter 44 #-# jumbo jet 44 General Electric CF6 44 twin turboprop 44 Bombardier CRJ#s 43 Boeing #-# Freighter 43 turboshaft 43 C 5s 43 Aircraft Engines 43 Tupolev TU 43 horizontal stabilizer trim 43 Beech #D aircraft 43 Raytheon Hawker #XP 43 helicopter tail rotor 43 Sikorsky S 43 MD #N 43 CRJ# [001] 43 Jacques Herubel 43 KC #Rs 43 Thiokol 43 Apollo lunar lander 43 Lockheed Martin Skunk Works 43 Textron Lycoming 43 Sperry Rand 43 Aircraft Braking Systems 43 turbofan engine 43 CF6 43 Jetstream aircraft 43 turboprop airliner 43 Learjet #A 43 KC #E 43 AeroTech 43 aft fuselages 43 Delco Electronics 43 Bombardier CRJ 43 twinjets 43 GE CF# 43 Aero Commander 43 Bombardier DHC 8 43 Avborne Heavy Maintenance 43 supersonic aircraft 43 Beechcraft #D 43 ERJ# 42 Tu #M 42 Boeing Dreamlifter 42 Cessna Skylane 42 Shenyang Aircraft Corp. 42 jets 42 Bombardier CRJs 42 seat CRJ#s 42 Airbus A# airliners 42 Aitheras Aviation Group 42 Q# turboprop 42 Raytheon Aircraft Co. 42 engine nacelles 42 Airbus 42 Bell Agusta Aerospace 42 fuselage 42 jet 42 UH 1N 42 Carolyn Corvi 42 UH 1H 42 Boeing #s 42 Turbo Prop 42 Cessna #C 42 Grumman G 42 twin propeller 42 auxiliary hydraulic 42 A# airliner 42 twin turboprop aircraft 42 Airwork 42 SH #F 42 Dassault Falcon Jet 42 Vans RV 42 jetliners 42 F 5E 42 Beechcraft 42 Cessna #A 42 & Whitney JT8D 42 Honeywell TFE# 42 MD #Fs 42 Airbus A# jetliner 42 Fieldstone Mortgage 42 Lockheed Martin 42 Citation Excel 42 Canadair Regional Jets 42 HC #J 42 SB2C Helldiver 42 Kollsman 42 Avco Lycoming 42 Airbus SAS A# 42 Gol airlines 42 Grumman Aerospace 42 Pilatus PC# 42 Aerostructures 42 dreamliner 42 Pilot ejects 42 CitationJet 42 General Electric GE# 42 jackscrew 42 engine nacelle 41 Twin Comanche 41 Vickers Viscount 41 DC9s 41 Avco Corporation 41 turboprop airplanes 41 Airbus jets 41 Rotorcraft 41 CF6 #A 41 AgustaWestland EH# 41 Eurocopter EC 41 Kiowa Warrior helicopters 41 twin turbo prop 41 Utilicraft Aerospace Industries 41 ERJ #s 41 Q# turboprop aircraft 41 F/A-#E/F Super Hornet 41 Teledyne Continental Motors 41 turboprops 41 Airbus A#XWB 41 Chromalloy Gas Turbine 41 seat Q# turboprop 41 Raytheon Aircraft 41 GE# engines 41 Airbus A#/# 41 UAL Corp. UALAQ 41 Dresser Industries 41 Rolls Royce RB# engines 41 EH# [001] 41 #E# airplane 41 Bombardier CRJ# [002] 41 Merpati airline 41 Caterpillar Tractor 41 Runway 4R 41 Braniff Airlines 41 F #D 41 twin engined aircraft 41 Aerotaxi 41 Prism Helicopters 41 Fairchild Metroliner III 41 M7 Aerospace 41 CH #D 41 Boeing B# #s 41 Xian Aircraft 41 N#UA 41 F# engine 41 fuel tank inerting 41 DHC8 41 Dash #-# 41 Vought Alenia 41 Saab #B 41 Curtiss Wright 41 Boeing Stearman 41 F# engines 41 Univac 41 Falcon #EX [003] 41 radar evading stealth 41 NASA Weightless Wonder 41 Flying Fortress bombers 41 compressor blades 41 CF# #E 41 turbofan 41 À# 41 Lew Platt 41 Lancair Columbia 41 General Atomics Aeronautical 41 XAIC 41 F/A-#F Super Hornets 41 Piper Arrow 41 PW# engine [002] 41 C #H Hercules 41 Pave Lows 41 P 8As 41 Stang AIR 41 UH #L 41 seat CRJ #s 41 overwing frames 41 MD# aircraft 41 Pilatus PC 41 Pilatus PC-#/# 41 Taylorcraft 41 flap actuators 41 Lockheed Martin Corp. 41 Avro RJ 41 GEAE 41 airliner 41 FAvS 41 Tomcat fighter 41 MDHI 41 Cessna #L 41 AlliedSignal 41 Airbus narrowbodies 41 Hafei Aviation Industry 41 Fokker #s 41 #-# freighters [001] 41 Cessna #R 40 Airbus A# superjumbo jet 40 Embraers 40 Skyway Airlines 40 Utilicraft Aerospace 40 longerons 40 spokeswoman Candy Eslinger 40 KC #Es 40 ATR# [001] 40 X #As 40 Aircraft Manufacturing 40 afterburning 40 BAe #s 40 aft fuselage 40 Sud Aviation 40 Raytheon Hawker 40 Emivest Aerospace 40 JT#D 40 aerostructures 40 clipped treetops 40 supersonic jet 40 MD#s 40 Bell Agusta 40 Manaus Aerotaxi 40 TAM airlines 40 Russian airline UTAir 40 Frisby Aerospace 40 Aeroflot Cargo 40 MiG# 40 engine turbo prop 40 Sikorsky Black Hawk 40 Caspian Airlines 40 F/A-#E/F 40 Boeing Vertol 40 Sukhoi SuperJet 40 Kunpeng Airlines 40 A#B# 40 Glasair II 40 U 2S 40 Flight SQ# 40 Kitfox 40 Canadair 40 ATR #-# 40 NASA Ikhana 40 P 8A Poseidon 40 Sikorsky HH 40 Stork Fokker 40 ZA# 40 B2 stealth bomber 40 Stratoliner 40 Mig #s 40 jumbo jet 40 General Atomics Aeronautical Systems 40 twin engined jet 40 Chinook CH 40 Embraer ERJ# 40 Phoenix Heliparts 40 Aeroflot Nord 40 Cessna #N 40 aircrafts 40 Stearman biplanes 40 Comair CRJ 40 Jetliner 40 Anaconda Copper 40 Eurocopter EC# 40 Cessna Caravan 40 FAA airworthiness directive 40 GE IN# 40 thrust reverser 40 airframes 40 Vertex Aerospace 40 CF# engines 40 F #Ks 40 #JET 40 BA.N 40 Sibir Airlines 40 wing spars 40 Alenia Aeronautica 40 Sikorsky S# 40 aft fuselage sections 40 propeller plane 40 Apache Longbow 40 Nash Kelvinator 40 Embraer jets 40 Concorde jet 40 Grumman Goose 40 CRJ #s 40 GE CF6 #C# 40 Piper Aztec 40 Tu #s 40 ATR #-# turboprop aircraft 40 Joint Unmanned Combat 40 MiG 40 Spirit Aerosystems 40 CFM# engines 40 Piper PA 40 Bombardier Dash #-# 40 manufacturer Cirrus Design 40 reinspecting 40 Europrop International 40 ValuJet 40 #Bs [002] 40 Lancair ES 40 narrowbody 40 turbofans 40 B #H Stratofortress 40 Piper Navajo 40 CH #F 40 delta winged 40 KC #R 40 Midcoast Aviation 40 nyse BA 40 Beechcraft airplane 40 deseal reseal 40 Aerostar 40 Mark Rylance Boeing 40 LTS# 39 Dash 8s 39 CTOL 39 C #E Hercules 39 twin engined Cessna 39 turboprop ATR 39 CRJ 39 F/A-# Hornet fighter 39 RotorWay 39 Whitney PT6A 39 F/A-# 39 KC #s 39 Socata TBM 39 seat Bombardier CRJ 39 Planemaker 39 GIV SP 39 F/A-# Raptor fighter 39 Mars Climate Orbiter 39 propeller blade 39 twin engined turboprop 39 SIA Engineering 39 Lockheed Martins 39 CF6 #C# 39 Osprey tiltrotor aircraft 39 wiring harnesses 39 Cessna Aircraft Company 39 Vertical Landing STOVL 39 regional Kogalymavia airline 39 Cessna Citation X 39 widebody airliner 39 Corp LMT 39 UH 1H helicopters 39 Grand Aire 39 Electroimpact 39 RQ 4B 39 Rocketdyne Propulsion 39 widebody jet 39 nonpilot 39 JCAB 39 F/A-# fighter jets 39 Aluminum Overcast 39 Dreamlifters 39 Q# Bombardier 39 C #Hs 39 turbojet 39 Morrison Knudsen 39 airbus 39 Fadec 39 rotor blade 39 Aero Vodochody 39 #F freighters 39 Boeing Rotorcraft 39 Gulfstream G# 39 Qantas flight QF# [001] 39 Coltec 39 airframes engines 39 Q# turboprops 39 contractor Lockheed Martin 39 tail rotor 39 Vasp 39 Helibras 39 Kistler Aerospace 39 Piper PA# 39 MD# [002] 39 Airbus A#/A# 39 Ingalls Shipbuilding 39 tandem rotor 39 Canadair Challenger 39 Merpati Nusantara 39 Kiowa Warrior 39 airbuses 39 P 3C Orions 39 Antonov AN# 39 turboprop aircraft 39 Gulfstream GV 39 Celotex Corp. 39 SaM# engine 39 Pemco Aeroplex 39 Diamond DA# 39 midair refueling tanker 39 strategic airlifters 39 Armenia Armavia 39 Fokker F# 39 Yakovlev Yak 39 Tiger Moth biplane 39 Medium Multirole Combat Aircraft 39 Super Etendard 39 Citation CJ2 39 Airbus A# aircrafts 39 refuelers 39 Whitney Rocketdyne 39 F #B STOVL 39 Palwaukee Municipal Airport 39 pitot probes 39 Embraer RJ 39 Cessna Citation Sovereign 39 Van Gels 39 PW#G 39 Grumman Mallard 39 G#s [001] 39 superjumbo jet 39 thrust reversers 39 B# 8s 39 A#/# aircraft 39 Avros 39 Rocketdyne 39 Mednax NYSE 39 F 5E jets 39 Sikorsky Aircraft 39 Challenger CL 39 MD# jets 39 vertical fin 39 P2V Neptune 39 Cessna Caravans 39 USAir Flight 39 GE Honda HF# 39 IRKUT 39 Liberian flagged MV Biscaglia 39 F/A-# fighter 39 AirbusAirbus 39 PaR Nuclear 39 #NGs 39 AH 1Z 39 J UCAS 39 ComAir 39 airframer 39 Dreamliner ZA# 39 landing STOVL 39 VariEze 39 Turboprop 39 ATR turboprops 39 Lockheed Martin Aeronautics 39 Apache Longbow helicopters 39 CRJ#s 39 Taikoo Xiamen Aircraft 39 Boeing #E# 39 F/A-# jet 39 Fairchild Fasteners 39 Thrush Aircraft 39 F/A-#D 39 Cessna SkyCatcher 38 jetmaker 38 Russia S7 Airlines 38 Northwest Airlines 38 Boeing BA.N 38 Champion Citabria 38 Jumbo Jet 38 Beechcraft A# 38 BOAC 38 seater Embraer 38 ATR turbo prop 38 CJ3 38 RF 4C 38 Polar Molecular 38 Northrup Grumman 38 Sporlan Valve 38 fuselage sections 38 Vought Aircraft 38 AAR Aircraft Services 38 KC #A [001] 38 Boeing AH #D 38 Telair 38 Hawker #A 38 Lancair kits 38 Aeronavali 38 MH #S 38 autothrottle 38 Alteon 38 Hamilton Sunstrand 38 GEnx engine 38 Matsushita Avionics Systems 38 Mikoyan MiG 38 F 5F 38 airliners 38 #F freighter 38 NewGen tanker 38 STOVL aircraft 38 9A APU 38 Bombardier turboprops 38 Antonov AN 38 top Aerospatiale engineer 38 A#/A#s 38 Boeings 38 Dreamlifter 38 Beechcraft Bonanza 38 Su #SM 38 Allied Signal 38 Grob #E light 38 RQ 4B Global 38 Airbus SAS A# superjumbo 38 Avioane Craiova 38 CRJ#/# 38 Universal Avionics 38 Thomas Fijalkovich 38 ATR #-# aircraft 38 engine widebody 38 Citation CJ1 + 38 winglet 38 Swissair 38 Textron Cessna 38 F/A-#s 38 jumbo jetliner 38 vertical landing STOVL 38 Navion 38 Citation XLS + 38 towing glider 38 Citation XLS 38 Embraer E# aircraft 38 underwing 38 #E# airliner 38 Soviet MiGs 38 wing slat 38 landing CTOL F 38 Stratotankers 38 CFM# 38 C #J aircraft 38 Garuda Airlines 38 APS# APU 38 ailerons 38 Gulfstream Aerospace Corp. 38 Boeing Co BA.N 38 Aeronautical Accessories 38 Skymark Airlines 38 Kaveri engine 38 Tupolev Tu 38 Phenom jets 38 Concorde supersonic 38 tilt rotor 38 EADS Casa 38 Ishikawajima Harima Heavy Industries 38 CFM# powered 38 multirole fighters 38 P 8I aircraft 38 Boeing #E#s 38 CH #Ds 38 F/A-#F 38 CJ2 + 38 Embraer Legacy 38 Embraer 38 supersonic bomber 38 ATR turboprop 38 LTV Steel 38 C# Hercules 38 STOVL variant 38 Aloha Airlines #-# 38 Nighthawk stealth fighter 38 Piper Comanche 38 reversers 38 GE# engine 38 Nexcelle 38 actuation systems 38 rigid airship 38 Global Aeronautica 38 CFM# engine 38 B 1B Lancer 38 Vietnam Aircraft Leasing 38 main rotor blade 38 Embraer EMB 38 MAFFS 38 MKI fighter aircraft 38 Aeronca Champ 38 FlightBlogger 38 Cali cartels 38 B#NG 38 Freight Feeder Aircraft 38 Boeing #-# Intercontinental 38 Avenger torpedo bomber 38 Airbuses 38 Citation CJ4 38 Dhruv helicopter 38 Boeing B# 38 subchapter C 38 Messier Bugatti 38 Concorde 38 Beechcraft #C 38 EADS Sogerma 38 UH 1Y Huey 38 OH #D 38 twin engined 38 Morton Thiokol 38 seater ATR 38 Garmin G# glass 38 Jacques Rosay 38 Flyi 38 Seair Seaplanes 38 airworthiness directive 38 Aculight Corporation 38 Strike Eagle 38 GEnx 38 Harry Stonecipher 38 P 3Cs 38 B #J Liberator 38 GTE 38 Bombardier Q#s 38 Lockeed 38 N#D 38 Gulfstream Aerospace 38 RACR 38 Textron Bell Helicopter 38 Lancair IV 38 A# freighter 38 EVERETT Wash. Boeing 38 Raptor stealth fighter 38 CH #Fs 38 DeCrane Aircraft 38 Citation Sovereign 38 EADS Socata 38 Piper Cub airplane 38 Tupolev Tu #M 38 Lockheed Northrop 38 A#-#/# [001] 38 fighter jet 38 GE Aircraft Engines 38 Airbus superjumbos 38 Aviastar 38 Convair CV 38 MiG #Ks 38 Xi'an Aircraft International 38 unflyable 37 #-# Combis 37 Aérospatiale 37 Shadow Tactical Unmanned 37 Globemaster III transport 37 ROKAF 37 Grumman Albatross 37 Sikorsky HH #G 37 B#s [001] 37 JetRanger 37 Beechcraft Baron 37 Sukhoi 37 Eurocopter AS#B# 37 Airframes 37 MH #G 37 freighter conversions 37 PanAm 37 Piper Saratoga 37 Cargo Aircraft 37 Fairchild Metroliner 37 Gloster Meteor 37 Camair 37 PW# engines [001] 37 #XWB 37 Aerosonic 37 Beechcraft BE# 37 Airbus A# jets 37 Saab turboprops 37 Cessna #s 37 plane clipped treetops 37 Flightstar Aircraft Services 37 Aereas 37 #E# jet 37 Type Certificate 37 Chelton Flight Systems 37 widebodies 37 maker Hawker Beechcraft 37 aeronautical engineer 37 F/A-#E/F Super Hornets 37 TRW Aeronautical Systems 37 Helios Airways 37 tailcone 37 Rocketdyne Propulsion & 37 TAECO 37 wiring bundles 37 cockpit wiring harnesses 37 Alexey Fedorov 37 Nihon Mirise 37 Frank Shrontz 37 BAe #-# 37 FADEC equipped 37 Airplane 37 Embraer SA 37 MiG fighter 37 Avjet 37 Globemaster III cargo 37 Eurocopter AS 37 #N chopper 37 Kathleen Bergen 37 Airbus A#XWB aircraft 37 ADIRUs 37 SB2C Helldiver crashed 37 Kamov 37 Piper Cub 37 JT8D engines 37 tiltrotor aircraft 37 Chris Kubasik 37 carrier Mesaba Aviation 37 V STOL 37 C #H 37 Globemaster III airlifters 37 Antonov 37 Cessna Hawker Beechcraft 37 Airbus A# airliner 37 Russia Irkut 37 VALC 37 tail rotor blades 37 Systems J UCAS 37 CF6 engine 37 8I 37 Eurocopter AS# 37 ExcelAire Service 37 Kfirs 37 & Whitney JT#D 37 Airbus A# double decker 37 Brazilian planemaker Embraer 37 Loose fastening 37 Metroliner 37 Jeppesen Sanderson 37 Cessna Aircraft Co. 37 ValuJet Flight 37 Bombardier CRJ# jets 37 engine cowlings 37 de Havilland DHC 37 IranAir fleet 37 Cessna airplanes 37 jumbo jets 37 Utilicraft 37 Nordam 37 Sineva Toevai 37 composite airframe 37 Falcon #LX [001] 37 replacing Pitot tubes 37 X #A WaveRider 37 TPE# 37 Spirit AeroSystems Holdings 37 Rolls Royce aero 37 Fokker Friendship 37 THAAD interceptors 37 Celotex 37 General Electric GEnx 37 Dreamliner jet 37 Globemaster III 37 Hewa Bora Airways 37 Cessna #S 37 turboshaft engine 37 Mitsubishi Heavy 37 homebuilt plane 37 Raytheon 37 Inc HON 37 Mandala Airlines Boeing 37 Aircraft Mechanic 37 Pemco Aviation Group 37 test airplane ZA# 37 Armenian airline Armavia 37 de Havilland Otter 37 Conviasa 37 Keystone Helicopter 37 SuperCobra 37 Aspen Avionics 37 Huntleigh USA 37 Kapac Co. 37 Piper Aerostar 37 Dornier #s 37 nacelle components 37 Ahlers Aerospace 37 Spanair MD 37 Kish Airline 37 Pegasus Aviation 37 Demonstration SDD contract 37 wing monoplane 37 airframe modifications 37 Bombardier DHC8 37 Aeronautical Systems 37 CRJ# [002] 37 GE# #B 37 Teledyne Continental 37 Ltd. COMAC 37 ALHs 37 Willys Overland 37 Cessna Skyhawk 37 BE# Beech Baron 37 Tri Pacer 37 Embraer ERJ #s 37 Boeing widebody 37 M MRCA 37 CRJ Series 37 B# #s 37 ValuJet Airlines 37 unairworthy 37 CRJ# NextGen [002] 37 nutplates 37 Grumman F6F Hellcat 37 STOVL F 37 Avic II 37 vertical takeoff 37 Lockheed Skunk Works 37 P 8A 37 Charles Lindbergh Spirit 37 Flying Fortress bomber 37 EA 6B Prowler 37 STOVL 37 C#J 37 Cirrus SR# 37 Nacelle 37 NTSB Plane 37 GEnx engines 37 Grumman G# 37 Thrust Reverser 37 Air Force F/A-# Raptor 37 turbojets 37 F #A Raptor 37 radar evading F 37 raked wingtips 37 #ER Freighter 37 Sikorsky UH #M 37 #SF aircraft 37 Su #MK# 37 Beech #C 37 BF Goodrich 37 Aviakor 37 Argon ST NASDAQ STST 37 Piper Warrior 37 Boeing #-#/#s 37 Fighting Falcon 37 composite fuselage 37 biplanes 37 tailboom 37 Electro Optical Systems 37 Todd Shipyards 37 Bell Helicopter Textron 37 Kiowa Warrior helicopter 37 Barry Wehmiller Cos. 37 Nairashvili 37 Airlines 37 Miltope 37 HTS# [002] 37 Honeywell International 37 TWA Constellation 37 M2 F2 37 OV #A 37 radar evading supersonic 37 pitot probe 37 Boeing Converted Freighters 37 Sino Swearingen Aircraft 37 widebody jets 37 nyse LMT news 37 Ansett Worldwide 37 Avro 37 Lockheed Martin LMT.N 37 Programmed Depot 37 selects Rockwell Collins 37 JetDirect 37 Rolls Royce RB# 37 Navy EA 6B 37 MIDDLETOWN AK Steel 37 landing gear 37 Panasonic Avionics 37 #Fs [001] 37 Apache AH #D 37 GTE Sylvania 37 Dohnalek 37 Pulkovo Airlines 37 seat ARJ# 37 Sukhoi PAK FA 37 Tom Burbage Lockheed 37 landing CTOL 37 spokesman Marc Birtel 37 simulated dogfight 37 Sikorsky Aircraft Corp. 37 UH 1D 37 ATR# #s 36 Tupolev 36 Sabena Airlines 36 Goodrich Corp GR.N 36 Huntington Ingalls 36 Ducommun Technologies 36 Freeds owned 36 Spanair 36 Tom Jurkowsky 36 TAM Linhas Aereas 36 Illyushin 36 Grupo TACA 36 Airbus EAD.PA 36 refueling pods 36 Cessna #P 36 Command Aberdeen Proving 36 Airbus jetliners 36 seat Bombardier CRJ# 36 Airways seaplane 36 Spanair jet 36 Precision Engagement 36 Air Force 36 PW#G Engine 36 F/A-#A 36 Hindustan Aeronautics 36 #NG 36 SSJ# 36 FAS CAS 36 Flying Boxcar 36 Mokulele Hawaiian 36 Joe Cabuk 36 #BCFs 36 spokesman Chaz Bickers 36 BAe 36 F/A-# Raptor 36 turbofan engines 36 plane Cirrus SR# 36 Gripen fighter 36 Hamilton Sundstrand APS 36 F #Bs 36 STOVL mode 36 Grob Aerospace 36 airframe avionics 36 Bombardier Canadair CRJ 36 turboprop planes 36 Airbus A# airframe 36 Vastar Resources