Topic of the Month (14-05): AOA Systems
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This document from the FAA presents information on angle of attack systems for pilots. It notes that stalls and resulting spin accidents are a major cause of fatal crashes, often involving inexperienced pilots, and can occur at any airspeed or phase of flight. The document discusses problems determining airspeed, describes angle of attack indicators that can help avoid stalls, and recommends pilots practice stalls and slow flight with a flight instructor. It provides resources for pilots to investigate angle of attack systems further.
Topic of the Month (14-05): AOA Systems
- 1. Presented to: Pilots By: The National FAASTeam & the GAJSC (General Aviation Joint Steering Committee) Date: May 2014 Federal Aviation Administration Topic of the Month Angle of Attack Systems
- 2. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration Overview • Angle of attack systems • Stall/spin accidents • Airspeed/stall avoidance • AOA Solutions • Tips for Success 2
- 3. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration A. Can occur in any phase of flight B. Are a factor in many fatal accidents C. Usually involve low time pilots D. Can occur at any airspeed E. All of the above. Stalls: 3
- 4. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration A. Can occur in any phase of flight B. Are a factor in many fatal accidents C. Usually involve low time pilots D. Can occur at any airspeed E. All of the above. Stalls: 4
- 5. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration Stall/Spin Accidents • In the traffic pattern – Takeoff 28 % – Approach 18 % – Go Around 6 % • Crosswind • Maneuvering 41% • 1 Fatal Accident/3 days 5
- 6. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration The Airspeed Problem 6
- 7. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration The Airspeed Problem 7 • Aircraft configuration – Vs Cruise configuration – Vso Landing configuration • Load
- 8. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration Angle of Attack Indicators 8
- 9. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration AOA For GA 9
- 10. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration FAA Small Airplane Directorate 10
- 11. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration Streamlined Process 11
- 12. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration 12 •Safety Tip • Investigate AOA Systems • Practice • Stalls & slow flight • Pattern & Instrument • Fly with a CFI
- 13. Topic of the Month - May Angle of Attack Systems Federal Aviation Administration Resources • FAA Small Airplane Directorate – http://www.faa.gov/about/office_org/headquarters_offi ces/avs/offices/air/directorates_field/small_airplanes/ • AOA Press Release – http://www.faa.gov/news/press_releases/news_story.c fm?newsid=15714 • FAA Safety Briefing Magazine – http://www.faa.gov/news/safety_briefing/ 13
- 14. Presented to: Pilots By: The National FAASTeam & the GAJSC (General Aviation Joint Steering Committee) Date: May 2014 Federal Aviation Administration Topic of the Month Angle of Attack Systems
Editor's Notes
- #3: We want to take just a few minutes to talk about angle of attack systems. (Click) Stalls and spins are still major contributors to GA accidents so we’ll cover a few statistics (Click)We’ll talk a bit about the problems in using airspeed for stall avoidance. (Click) And we’ll discuss some angle of attack sollutions. (Click)Finally we’ll offer some tips for successful maneuvering flight task accomplishment Presentation Note: If you’ll be discussing additional items, add them to this list (Next Slide)
- #6: Here’s the lowdown on Stall/Spin Accidents. They are deadly. More than half occur in the traffic pattern and most of the rest involve maneuvering – usually too close to the ground for recovery.That all works out to one fatal accident every three days for the past ten years.(Next Slide)
- #7: We often discuss stalls with respect to airspeed and that can be a problem.Wings stall when their critical angle of attack is exceeded. Airspeed is a secondary indication of how close we are to the critical angle of attack. (Next Slide)
- #8: There are problems with using airspeed indications for stall avoidance. (Click)One being that Stall speed changes with aircraft configuration. (Click)Another has to do with aircraft load. As load or weight increase stall speed will also increase.So if a wing can stall at any airspeed in any configuration pilots must manage angle of attack and that argues for an AOA display and/warning system in the aircraft.(Next Slide)
- #9: Military aircraft have had AOA indicators for years. They’re essential to getting optimum performance in challenging situations but also very useful in routine flying as well. Only recently have they become more available and affordable for GA aircraft.(Next Slide)
- #10: AOA indicators are showing up on many new aircraft and there are also a number of affordable options for retrofit as well. Angle of attack sensing & display that go a long way toward reducing the number of stall/spin accidents.(Next Slide)
- #11: FAA’s Small Airplane Directorate has streamlined the process for production and retrofit approval of AOA devices. (Next Slide)
- #12: FAA’s Small Airplane Directorate has streamlined the process for production and retrofit approval of AOA devices. Presentation Note: If you have an internet connection you can access the Press Release by clicking on the information button on the lower right of the screen(Next Slide)
- #13: Angle of Attack systems promise so much benefit that we urge you to look into them for the aircraft you own or fly (Click)And be sure to keep your skills sharp through practice of stalls & slow flight as well as pattern and instrument work. (Click)Fly regularly with a CFI and be sure to document your achievement in the Wings Proficiency Program. It’s a great way to stay on top of your game. (Next Slide)
- #14: Presentation Note: If you have an internet connection you can access the resources by clicking on text. If there’s no internet access the audience can copy the URLs below each item.Here are some places you can go for more information.(Next Slide)