I'm not sure about pure pt. 91 corporate but for corporate/charter try: Avjet at BUR (on avjet.com they are looking for Westwind, Astra & Gulfstream pilots); Peterson, Spirit, Caly Lacy, The Airgroup, Elite Aviation, JetWest, Pacific Jet, & Raytheon at VNY; AirFlite (Toyota Motors) at LGB. All of these have websites. Hope this helps. Good luck.