Conversation so far:
How was Chesley Sullenberger involved in Civil aviation careers?
Sullenberger was employed by US Airways and its predecessor airlines from 1980 until 2010.
What did Chesley Sullenberger accomplish during these years?
In 2007, Chesley Sullenberger became the founder and CEO of Safety Reliability Methods, Inc., a firm providing strategic and tactical guidance to enhance organizational safety, performance, and reliability.
Did Chesley Sullenberg accomplish anything else other than becoming the CEO of SRM?
Chesley Sullenberger was a featured speaker for two panels: one on aviation and one on patient safety in medicine, at the High Reliability Organizations 2007 International Conference in Deauville, France.
Did Chesley Sullenberger earn any awards?
Chesley Sullenberger awards include Time's 100 Most Influential Heroes and Icons, Master's Medal, and Key to the City from New York City.
Was Chesley Sullenberger involved in anything else airplane related?
Chesley Sullenberger has also been involved in a number of accident investigations conducted by the USAF and the National Transportation Safety Board.

Question: What year did he serve as an instructor?
Self-contained rewrite: What year did Chesley Sullenberger serve as an instructor?