Up set recovery

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High Altitude Operations
Supplement #1 to the Airplane Upset Recovery Training Aid
Assembled by the Industry Airplane Upset Recovery Training Aid Team, October 5, 2008

Table of Contents
Page
Introduction .............................................................................................................................................1 High AltitudeAerodynamics...................................................................................................................2 L/D Max ..................................................................................................................................................2 Weight & Balance Effects on Handling Characteristics .........................................................................6Stalls........................................................................................................................................................6 Altitude Exchange For Airspeed ............................................................................................................7 Flight Techniques of Jet Aircraft.............................................................................................................8 Additional Considerations .....................................................................................................................9 Exercise: High Altitude Stall Warning ..................................................................................................11

Introduction
This document is intended to supplement the Airplane Upset RecoveryTraining Aid Rev 1 that was released in August 2004. It addresses the issues associated with operations, unintentional slowdowns, and recoveries in the high altitude environment. While the Airplane Upset Recovery Training Aid addressed airplanes with 100 seats or greater, the information in this document is directly applicable to most all jet airplanes that routinely operate in this environment. Thisinformation has also been inserted in the Airplane Upset Recovery Training Aid Rev 2 completed October 2008. Consult the operations manual for your airplane type, as that information takes precedent to the following guidance. An industry working group was formed to develop this guidance at the request of the U.S. Department of Transportation, Federal Aviation Administration. The working groupconsisted, in scope, of both domestic and international organizational representatives from the airline, manufacturer, regulatory, industry trade, and educational segments. The goal of this group was to educate pilots so they have the knowledge and skill to adequately operate their airplanes and prevent upsets in a high altitude environment. This should include the ability to Supplement #1 recognizeand prevent an impending high altitude problem and increase the likelihood of a successful recovery from a high altitude upset situation should it occur. This working group was formed as a result of the United States National Transportation Safety Board (NTSB) recommendations from a high altitude loss of control accident and other recent accidents and incidents that have occurred under similarconditions. The NTSB recommendations stated that pilots should possess a thorough understanding of the airplane’s performance capabilities, limitations, and high altitude aerodynamics. The guidance in this document is intended to supplement the Airplane Upset Recovery Training Aid in these areas. There have been other recent accidents where for various reasons (e.g. trying to top thunderstorms, icingequipment performance degradation, unfamiliarity with high altitude performance, etc.) crews have gotten into a high altitude slowdown situation that resulted in a stalled condition from which they did not recover. There have been situations where for many reasons (e.g. complacency, inappropriate automation modes, atmospheric changes, etc.) crews got into situations where they received an 1...
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