Greatest hits radio morning mystery oldie guessesSale Status: For Sale. Year: 1978. Make/Model: COMMANDER 690B. Registration #: N615SB. This 690B is ready to go and represents the best all around value in a -10 Commander available on today's market.Latex table wrap text and center1979 Gulfstream Commander 690B. AIRFRAME: Airframe TTSN: TTSN: 9087.9 Hrs. ENGINE: Engine L&R : 3860 Hrs Engine TBO: 5400 Hrs. PROP: Due July 2023. FEATURES: Leather Seats. AVIONICS: Dual King KTR-905 King KTR-630/King KTR-665 Coms King KDF-805 Nav King KXP-755 ADF Dual King KDM-706 DMEs Transponder