IIRC some passenger aircraft had a sweet periscopic sextant installed, and even the 747 still had a sextant port - not that it stopped KAL-007 crossing the Kamc

IIRC some passenger aircraft had a sweet periscopic sextant installed, and even the 747 still had a sextant port - not that it stopped KAL-007 crossing the Kamchatka peninsula...