Related by context. All words. (Click for frequent words.) 73 pitots 71 Pitot tubes 71 pitot probes 71 airspeed sensors 65 plane airspeed sensors 64 pitot 63 Pitot probes 59 pitot tube 59 Pitots 56 thrust reverser 56 pitot tubes iced 56 false airspeed readings 54 airspeed indicators 53 airspeed probes 53 pitot probe 52 Pitot tube 52 inertial reference 52 thrust reversers 52 ADIRUs 52 ADIRU 52 Pitot tubes iced 52 airspeed readings 51 Analyses BEA 50 airspeed sensor 50 faulty altimeter 50 union SNPL 50 radio altimeter 49 Legacy transponder 49 malfunctioning Pitot tube 49 Bureau d' Enquetes 49 Julien Gourguechon 49 airspeed 48 Bouillard 48 airspeed indicator 48 windshear 48 Alain Bouillard 48 plane thrust reversers 48 A# jets 48 Pilatus PC-#/# 48 conflicting airspeed readings 48 altimeters 48 deactivation switch 47 nosegear 47 airspeed instruments 47 investigator Alain Bouillard 47 autopilot disengaged 46 pitot static 46 pitot problems 46 rear bulkhead 46 fuel tank inerting 46 spokesman Nicolas Petteau 46 DGAC 46 nutplates 45 Izvolsky 45 disorient pilots 45 unclear Dubon 45 servo actuator 45 wing flaps 45 Pitot 45 cutoff ECO 45 autothrottle 45 ExcelAire pilots 45 altimeter 45 reverse thruster 45 Data Inertial Reference 45 flight AF# 45 microscopic cracks 45 deicing boots 45 Allan Kenitzer 45 TANS airline 45 AAIU 45 reverse thrusters 44 spokesman Allen Kenitzer 44 pressurisation 44 Yemenia A# 44 Qantas superjumbo 44 horizontal stabilizers 44 tail rotors 44 Airbus A# airspeed sensors 44 Pitot tube malfunctioned 44 spokeswoman Diane Spitaliere 44 midair disintegration 44 Yemenia jet 44 stick shaker 44 Dash #-# 44 Navy F/A-# fighter 44 consultant Elias Gedeon 44 yaw damper 44 Air Accidents Investigation 44 drogue 44 Van Vollenhoven 44 EAD.PA 44 airline S7 44 Continental Connection commuter 44 ignition coil 44 birdstrike 44 Branch AAIB 44 takeoffs landings 44 chief investigator Akrivos 44 deicing equipment 44 Bombardier Canadair CRJ 44 aircaft 44 Fadec 44 longerons 43 Raheel Ahmed spokesman 43 emergency locator transmitters 43 nosewheel 43 Erick Derivry 43 localizer 43 flight recorders 43 EASA 43 jackscrew 43 fuel inerting 43 wing slat 43 France flight AF# 43 Ted Lopatkiewicz spokesman 43 angled tail fins 43 deice boots 43 propeller blade 43 Rolls Royce Trent 43 cabin pressurization 43 Lancair ES 43 airspeed indications 43 Safety Bureau ATSB 43 Sandy Angers 43 incorrect airspeed 43 fatigue cracks 43 landing gear 43 Hoeltgen 43 Flight JK# 43 underwing 42 Antonov AN# 42 twin engined turboprop 42 Lopatkiewicz 42 authority DGAC 42 EGR valve 42 spokesman Marc Birtel 42 ailerons 42 test airplane ZA# 42 spokesman Jeremie Teahan 42 uncontained engine failure 42 worthiness directive 42 electrical arcing 42 Q# turboprops 42 Q# turboprop planes 42 flammable insulation 42 depressurize 42 Traffic Collision Avoidance 42 crisscrossing runways 42 Augmentation System 42 airbag sensor 42 Airworthiness Directives 42 TRACON controller 42 wake vortices 42 Airbus A# jetliners 42 Koito seats 42 tremor complicating 42 overspeed 42 Airworthiness Directive 42 localiser 42 ECO sensors 42 stick pusher 42 partial midair breakup 42 received inconsistent airspeed 42 ELTs 42 turboshaft 42 TAM Linhas Aereas SA 42 Joshua Cawthra 42 cosmic ray particle 42 Cosmic Origins Spectrograph COS 42 A# jetliners 42 jackscrews 42 Gourgeon 42 Runway #R 42 cabin decompression 42 Federal Aviation Administration 41 airfoils 41 Spanair jet 41 Spokesman Ian Gregor 41 spokesman Thomas Jachnow 41 Cockpit Voice Recorder CVR 41 aileron 41 guide vanes 41 Kathleen Bergen spokeswoman 41 Bombardier Q# turboprop 41 emergency locator transmitter 41 Airbus A# 41 Tu #B 41 electromagnetic signals 41 Grumman Mallard 41 Yemenia Airways flight 41 Commission TAIC 41 uncontrolled airspace 41 compressor stalls 41 airspeeds 41 cabin pressurisation 41 reversers 41 Bridget Ann Serchak 41 Yemenia Flight IY# 41 turbo prop engines 41 Deborah Hersman chairwoman 41 interferometric synthetic aperture radar 41 Air Moorea 41 spokesman Stefan Schaffrath 41 captain Marvin Renslow 41 Terrain Awareness 41 glideslope 41 plane deicing 41 Europrop 41 Dr. Hassan Malitan 41 Bredfall 41 helicopter tail rotor 41 Metrolink train Higgins 41 EASA directive 41 horizontal stabilizer trim 41 Civil Aviation Safety 41 Arslanian 41 unairworthy 41 PROMISES PROMISES FAA 41 blowdown stack 41 Beech #D aircraft 41 Kathleen Bergen 41 Spitaliere 41 air bag inflators 41 leaking hydraulic fluid 41 DFDR 41 Helios Prototype 41 spokeswoman Susana Vergara 41 Helios Airways flight 41 aborted takeoffs 41 pitot tube malfunction 41 starboard wing 41 engine cowling 41 abort takeoff 41 BOP blowout preventer 40 Volga Aviaexpress Tu 40 vertical stabilizer 40 flap actuators 40 autothrust 40 incorrect airspeed indications 40 Icy roadways 40 General Electric CF6 40 hydraulic actuators 40 Aviation Safety 40 reactor coolant 40 ultraviolet imaging spectrograph 40 emergency airworthiness directive 40 Airbus EAD.PA A# 40 taxiway markings 40 SIRAL 40 radar lidar 40 flight LH# 40 misconnection 40 VAAC 40 Accident Investigation Board 40 Beech #D 40 Van McKenny 40 reactor coolant pump 40 rotor shaft 40 Recorder FDR 40 Tam Linhas Aereas 40 Q# turboprop aircraft 40 ATR #-# turboprop aircraft 40 Aeronautica SA NYSE 40 Infrared Pathfinder Satellite 40 seat CRJ#s 40 inlet valve 40 Adurogboye 40 cockpit recorder 40 Surface Detection 40 Chief investigator Akrivos 40 inadequate preflight 40 cockpit recorders 40 Cargolux Airlines International 40 Grumman G 40 tailplane 40 BE# Beech Baron 40 Wide Area Augmentation 40 Paul Louis Arslanian 40 depressurisation 40 Paul Schlamm spokesman 40 ACARS 40 Q# turboprop 40 Thrust reversers 40 received conflicting airspeed 40 Lori Gunter 40 vertical stabilizers 40 NTSB Mark Rosenker 40 oxygen masks dangled 40 8 Q# Bombardier 40 CJ2 + 40 emergency landing Belevan 40 AAIB 40 tailcone 40 coolant temperature 40 Bombardier DHC8 40 Transport Minister Jusman 40 nosewheel steering 40 System TCAS 40 ASDE 40 William Shumann 40 turbine blades 40 Tsolakis 40 vertical tail fin 40 Troadec 40 Federal Aviation Adminstration 40 irritant potassium hydroxide 40 hydraulic fluid 39 nearby Teterboro Airport 39 Bridget Serchak 39 rudder limiter 39 airworthiness directives 39 CEO Girma Wake 39 Tupolev Tu #M 39 Emergency Locator Transmitter 39 manufacturer Empresa Brasileira 39 rivet holes 39 wing spars 39 cockpit canopy 39 Spanair 39 FAA 39 Mr Learmount 39 Sibir Airlines 39 #R/#L 39 airframe manufacturers 39 Accident Investigations 39 locator transmitter 39 Akrivos Tsolakis 39 Cape Verde Casablanca 39 CFM# 7B engines 39 tailboom 39 NTSB Plane 39 thruster firings 39 tail rotor blades 39 propellers 39 airworthiness directive 39 Improperly installed 39 maritime prefecture 39 spokesman Francois Brousse 39 Col. Henry Munhoz 39 Liz Landau 39 FAA airworthiness directive 39 subsurface cracks 39 Real Levasseur 39 tin whiskers 39 depressurised 39 Barbara Kracht 39 Agusta A# 39 twin turbo prop 39 Rolls Royce RR.L 39 A#/A# aircraft 39 TP# D6 39 Howard Plagens 39 Sibir airlines 39 Maiquetia 39 spokesman Lynn Lunsford 39 Rolls Royce engines 39 Garmin FliteCharts 39 faulty gasket 39 Aviation Civile 39 Colonel Jorge Amaral 39 Cessna Caravans 39 Bussereau 39 MH #S Seahawk 39 pilot aborted takeoff 39 baggage compartments 39 sticking accelerator pedal 39 coolant temp 39 AP Enterprise Airspeed 39 epoxy bolt 39 Cracked windshield 39 Aloha Airlines #-# 39 Airbus jets 39 Beechcraft #D 39 die Baillod 39 explosion suppressant foam 39 Infrared Astronomy 39 Air Accident Investigation 39 compressor stall 39 sinus node 39 sudden decompression 39 Flight AF# 39 pressurization 39 cockpit collision avoidance 39 Col. Jorge Amaral 39 windy Samura 39 reverser 39 flight ET# 39 rotor droop 39 Kurniadi 39 spatial disorientation 39 Aleknagik Alaska 39 blower motor 38 Maj. Robert Grzywna 38 interlock switches 38 un airworthy 38 Continental Airlines jetliner 38 Kenitzer 38 turbo prop plane 38 arrester 38 DGAC civil 38 deice 38 Elektron oxygen generation 38 Gol airlines 38 NTSB 38 emergency locator beacon 38 longeron 38 rough seas Tamayo 38 malfunctioning valve 38 spokesman Justin Dubon 38 Ensign Andrzej Michalak 38 Cessna Skymaster 38 Freeds owned 38 dropsondes 38 Pilatus PC# 38 groundspeed 38 Bombardier Dash 8 38 radarscope 38 runway centerline 38 turboprop planes 38 Moroni airport 38 Yemenia airline 38 turboprops 38 thermometers barometers 38 thrust vector 38 uncontained failure 38 stick pusher engaged 38 turbo prop planes 38 Beltsov 38 Doganer 38 headlamp leveling 38 Lynn Lunsford 38 Tim Monville 38 Cockpit Voice Recorder 38 Airbus A#XWB aircraft 38 stators 38 ATSB 38 turboprop airplanes 38 Pulkovo Airlines 38 Undocking 38 pressurizer 38 heated windshield washer 38 Canadair Regional Jets 38 Les Dorr 38 engine nacelle 38 Prius brake 38 LTS# 38 Bombardier Dash #-# 38 Approach Control 38 coolant leakage 38 burning plastic Rymarev 38 Sosoliso crash 38 emergency locater beacon 38 cabin depressurized 38 DeHavilland DHC 3T 38 hydraulically activated 38 ASECNA 38 brake pedal pins 38 Bombardier Q# 38 undersized gusset plates 38 El Kaei 38 committee Akrivos Tsolakis 38 TCAS II 38 transonic 38 AV node 38 QF2 38 Turbo Mallard 38 Fetal heartbeats 38 improperly soldered 38 retrorocket 38 polymer insulators 38 Qantas A# superjumbo 38 wheel fairings 38 navigable airspace 38 seat Bombardier CRJ 38 autoland 38 ComAir 38 Undersea robots 38 overhead gantries 38 subsidiary Aeroflot Nord 38 flight QF# [002] 38 designated ZA# 38 occluded arteries 38 runway Kajit added 38 passenger prescreening 38 Mooney M#E 38 spokeswoman Moushumi Chakravarty 38 Unmanned drone 38 Required Navigation Performance RNP 38 spokesman Jorge Amaral 38 Emergency Airworthiness Directive 38 aircraft 38 Air Missile AMRAAM 38 Cormorant helicopters 38 GPWS 38 Runway #L 38 Thales pitot probes 38 AWACS airborne surveillance 38 Afriqiyah Airways plane 38 Crossair 38 Minister Theera Haocharoen 38 PurePower PW#G demonstrator 38 Rail Accident Investigation 38 De Havilland Comet 38 D Velco unit 38 EASA approvals 38 mayday distress 38 Cypriot Helios Airways 38 fairing separation 38 Chief Executive Girma Wake 37 turbofan engine 37 faulty windshield wiper 37 Atlasjet pilot 37 twin engine 37 Rolls Royce RB# engines 37 shrapnel slicing 37 #T Turbine Mallards 37 spokeswoman Bridget Serchak 37 Minister Waldir Pires 37 rubber bladders 37 Yemenia 37 Airbus 37 Thales probes 37 NTSB investigates 37 Helios Airways Flight 37 deploying asymmetrically 37 rig blowout preventer 37 depressurized 37 undersizing 37 faulty airspeed readings 37 provides IFEC 37 Airbus A# airliner 37 avionic systems 37 vertical fin 37 Lieutenant Colonel Henry Munhoz 37 airbag defect 37 Airbus superjumbo 37 engine thrust reversers 37 miswired 37 convict Lisker 37 Czechoslovak Airlines 37 torque limiter 37 aboard Fossett Bellanca 37 Champion Citabria 37 airbag deploys 37 corroded gusset plates 37 Airport spokesman Fridthor 37 Cessna #R 37 autopilot disconnected 37 Onur Air 37 Q# Bombardier 37 Spanair MD 37 cockpit voice 37 Airbus SAS A# 37 EICAS 37 Ozone Monitoring 37 Airbus A# jetliner 37 Jean Paul Troadec 37 incinerated wreckage 37 dysrhythmia 37 Kulakhmetov suggested 37 elevons 37 exhaust vent 37 Jetstream aircraft 37 TCAS 37 Isham Cory 37 spokesman Bambang Sulistyo 37 faulty accelerator pedal 37 DeHavilland Twin Otter 37 Marten Hans 37 NOTAMs 37 expedition ship Alucia 37 stoppings 37 ADAHRS 37 Craig Lenell 37 ECO sensor 37 flightcrew 37 sondes 37 flapless 37 twinjets 37 rhythm disturbances 37 Lt. Col. Hendra Pakan 37 Axel Raab spokesman 37 Anodina 37 drawspan 37 Manaus Aerotaxi 37 glide slope 37 Required Navigation Performance 37 auxiliary hydraulic 37 Col. Vladimir Drik 37 Jacques Herubel 37 Unit AAIU 37 turbopumps 37 hydraulic actuator 37 Monville 37 cabin depressurization 37 don oxygen masks 37 remotely controllable 37 bladed propeller 37 magnetos 37 minister Dominique Bussereau 37 DDEC 37 GE# engine 37 flue pipe 37 ATR# [001] 37 bolt assemblies 37 engine turbo prop 37 Satellite Aided Tracking 37 shuttle aft compartment 37 sunburst designs 37 Hersman 37 aft fuselage 37 gunshots Urquhart 37 collision avoidance systems 37 flight QF6 37 PW# engines [001] 37 Orlandella 37 turbojet 37 PW# engine [002] 37 tripped circuit breakers 37 PFD MFD 37 rudders 37 Missing yachtsman 37 RAF Nimrods 37 electrical malfunction 37 preflight checks 37 uncommanded 37 leaky valve 37 TransAfrik L 37 pingers 37 carbon monoxide poising 37 stick pusher mechanism 37 nosecap 37 unexplained anomaly 37 Fregat upper stage 37 rapid depressurization 37 Embraer Brasilia 37 Agency EASA 37 lint buildup 37 Ends Touch Screen 37 electronic throttles 37 horizontal stabilizer 37 investigator Pieter van 37 Runway Awareness 37 pedal misapplication 37 Qantas superjumbo jet 37 Left uncorrected 37 Cessna #B 37 miscalibration 37 gendarme helicopter 37 FADEC controlled 37 Capt. Arkadiusz Protasiuk 37 propeller blades 37 clipped treetops 37 Driver inattention 37 Raytheon Beech #D 37 airport authority Infraero 37 Embraer Legacy jet 37 propellors 37 Belevan 37 flightworthy 37 Q#s 37 wiper motors 36 sagging ceilings 36 QF6 36 rotor 36 calcium buildup 36 replacing Pitot tubes 36 piezoelectric sensors 36 Morning Mauve Avenue 36 Sao Paulo Congonhas 36 DMSP F# 36 Profiler Suite OMPS 36 outer pane 36 tachometers 36 faulty welds 36 programmable logic controller 36 HC #J 36 Comoros archipelago 36 Administrator Randy Babbitt 36 Lyall Harbour 36 arrestor 36 Garmin G# integrated 36 interfere catastrophically 36 Rosenker 36 bipod ramp 36 Rolls Royce RB# 36 airworthiness 36 AirbusAirbus 36 Tech Insertion 36 Ares IX booster 36 Henan Airlines 36 GP# engines 36 spokesman Paul Schlamm 36 Helios Airways 36 MD #Fs 36 Include Docket No. 36 propeller 36 faulty splice 36 ashfall advisory 36 capacitive coupling 36 airframe icing 36 rudder pedals 36 NYSE ERJ Bovespa 36 Elektron oxygen generator 36 PW#G engines 36 De Havilland Twin Otter 36 contra rotating 36 Slater profanity laced 36 Piper Aztec 36 corroded wiring 36 EGPWS 36 Yemenia Airways Airbus A# 36 Beechcraft A# 36 switchbox 36 Rosaviatsia 36 Cessna Citation Sovereign 36 resynchronization 36 overloaded extension cords 36 NTSB investigator 36 preflight inspection 36 Cockpit Voice 36 ignition coils 36 pusher propeller 36 Luke Schiada 36 twin engined plane 36 lightning arrestor 36 Communist Party lawmaker Haralambos 36 collision avoidance 36 unscheduled landings 36 turboprop 36 Gulfstream GV 36 hotel maid Koscuisko 36 electromagnetic interference 36 Kovtun flew 36 Lakeway Airpark 36 manifold assemblies 36 Piper Navajo 36 radar altimeter 36 Yemenia airliner 36 opto couplers 36 failsafe mechanism 36 deplaned safely 36 Kristi Dunks 36 parabolic arcs 36 Elizabeth Isham Cory 36 ducted propeller 36 Q# aircraft 36 Schiada 36 ECAM 36 turbojets 36 aerodynamic impediment 36 GE CF# 36 Ground Proximity Warning 36 Ruben Payan 36 seater Airbus A# 36 FAA NextGen 36 intertank 36 Canadair Regional Jet 36 Bombardier Q# turboprops 36 protocol analyzers 36 unreliable airspeed 36 sonde 36 radome 36 Jachnow 36 Cessna #P 36 wind shear 36 Continental Connection turboprop 36 empennages nacelles 36 lit Brannen 36 Radjasa 36 wiring harnesses 36 Dash 8s 36 gaseous hydrogen leak 36 Lauren Peduzzi spokeswoman 36 Bernard Celier spokesman 36 rain slicked runway 36 NOTAM 36 contradicted Metrolink 36 Turbo Prop 36 Yemenia airlines 36 ASDE X 36 Itek Air Kyrgyz 36 Lizandro Toro 36 turbofans 36 Mars Odyssey spacecraft 36 malfunctioning 36 MD #N 36 Railway Accidents Investigation 36 spokesman Brian Kulpin 36 ash ingestion 36 plane towing glider 36 compressor blades 36 Bushelman 36 Qantas Flight QF# 36 spokesman Roland Herwig 36 seat Q# Bombardier 36 blowdown drum 36 vectoring planes 36 control deactivation switch 36 flame arrester 36 separated Berges 36 Brazil Embraer EMBR3.SA 36 Ethiopian Airlines 36 Messier Bugatti 36 civil aviation 36 military spokesman Sagom 36 malfunction 36 overvoting 36 F/A-#D Hornet fighter 36 welded joints 36 Freon coolant 36 Piper Navajo Chieftain 36 TAS# [002] 36 Glasair II 36 ESA ERS 36 X #As 36 actuation systems 36 Conviasa 36 EP 3E 36 superjumbo jets 36 Blowout preventer 36 chairwoman Deborah Hersman 36 Mohammed Abdul Qader 36 depressurization 36 electromechanical actuators 36 sticky pedals 36 faulty electrics 36 pinhole leaks 36 KIAS 36 valley Villong 36 Lt. Col. Andy Roake 36 recorders 36 Bombardier turboprops 36 Beechcraft BE# 36 Daniel Hoeltgen spokesman 36 diagonal runways 35 JT#D 35 Steven Chealander 35 Griffon helicopters 35 Precision Airmotive LLC 35 multifunction displays 35 blown fuse 35 DiFulco 35 downloading EDR 35 Helios Airways jet 35 plane clipped treetops 35 distress beacon 35 bathroom Almoraissi 35 tire blowouts 35 A#/A#s 35 vomeronasal 35 airframe 35 engine nacelles 35 barometric altimeter 35 sharklets 35 Bombardier CRJ 35 Cessna #s 35 wheel bearings 35 Boeing #-# 35 Kulpin 35 built Dornier turboprop 35 airbus A# 35 computerized selloff 35 Andriyanova 35 TAM airliner 35 landed uneventfully 35 Pitot sensors 35 vapors ignited 35 thrust vectoring 35 SR# G3 35 Fort Totten station 35 worse Abaurrea 35 Bezuijen 35 Global Surveyor 35 Lt. Artur Zietek 35 flight IY# 35 Capt. Curt Kuchta 35 reactor coolant pumps 35 simple typographical error 35 autopilots 35 orbital maneuvering 35 localizer acts 35 coolant hoses 35 hydraulic leak 35 Yemenia Airways 35 Diane Spitaliere 35 expert David Learmount 35 Airworthiness Directive AD 35 Chairwoman Ellen Engleman 35 Mars Reconnaissance Orbiter MRO 35 spokesman Jorge Belevan 35 Crashed commuter 35 Dreamlifters 35 Martine Del 35 rudder 35 airframer 35 standpipe unattached 35 Sobakam 35 Eddy Suyanto 35 ARTCC 35 Armenian airline Armavia 35 Eurocontrol 35 malfunctioning furnace 35 unlit runway 35 batteries gyroscopes 35 Cessna #C 35 rotor blades 35 Mr Kintau 35 Jandakot airport 35 Airspace Data Interchange 35 taxiway 35 Tornado F3 35 these windfalls Lunsford 35 basically becomes unflyable 35 stub sill 35 NTSB Chairwoman 35 reclosure 35 erratic heartbeats 35 homing beacons 35 steering yoke 35 regional Kogalymavia airline 35 Ali Ariduru head 35 brake duct 35 Shanghai Baolong Automotive 35 Bombardier CRJ# [001] 35 Thrust Reverser 35 engines flamed 35 clutchless manual 35 Eurocopter AS#B# 35 Palwaukee 35 flight QF# [001] 35 carrier TAM Linhas 35 altitude decompression 35 System WAAS 35 Pressurization 35 Competitor Liaison Bureau 35 aging Nimrod MR2 35 Stormscope 35 planes 35 extremely prudent Bussereau 35 Heavier loads 35 Firefighters hosed 35 Grumman Goose 35 Patrick Gandil 35 #T Turbine Mallard 35 Calverts cell phones 35 fuselage 35 Fusionman 35 incorrect readback 35 feedwater pump 35 faulty alternator 35 JT9D 35 tail rotor 35 antilock brake 35 Pamir Airways disappeared 35 electronic throttle 35 Terrain Awareness Warning 35 tripped circuit breaker 35 Airbus A#XWB 35 Teratai Prima 35 retreaded tire 35 antilock braking system 35 slight misalignment 35 cautiously envisaging 35 intersecting runway 35 winglets 35 Isavia 35 Arcing 35 faulty wiring 35 radar reflector 35 severely corroded 35 Qantas flight QF# [001] 35 Remotely piloted 35 aerobatic maneuver 35 GE CF6 #C# 35 intact vertical stabilizer 35 faulty valve 35 coolant pumps 35 Tintomara 35 GPS chartplotter 35 helium leak 35 neutrally buoyant 35 Worn tires 35 de Havilland Beaver 35 LiveATC.net 35 Qantas A# 35 Douala airport 35 AFDX 35 Data Interchange Network 35 co pilot Pambos 35 Garmin G# [002] 35 Thales avionics 35 captain Claude Lelaie 35 Gen. Ramon Cardoso 35 carbon dioxide scrubber 35 radar scopes 35 Bombardier CRJ# [002] 35 airworthiness certificates