The Pan Am Light That Split in Two beyond Necker Island

The Pan American plane had passed Necker Island at 0535 GCT on its eastbound run from Midway. Twenty-three minutes later it was flying at 9,000 ft and about 205 knots, some 45 minutes after sunset on 12 September 1947. Captain Stanley S. Griffin and Second Officer Edward B. Polhemus then saw an intense white light 60 degrees off the starboard bow. It looked like the light of an approaching plane, only far brighter. It grew stronger until they judged it a mile off. When the crew switched from autopilot to manual control the light veered abruptly to about 109 degrees and split into two reddish lights about a wing-length apart. They pulled far ahead at an estimated 1,000 knots and "appeared to burn out 30 miles ahead". The whole event took about six seconds.

What is on the record

Incident 59 in the 1947 incident summaries released by the Department of War carries the account, a check-list followed by a page of narrative. It fixes the position at 23°34'N 164°42'W. Both men told the interviewer it could have been a meteor except for one thing. The light held about 9,500 ft throughout and never lit the cloud deck at 8,000 ft below it. Asked whether they had seen an optical illusion, both "firmly declared" that it changed course and kept its altitude. The check-list records no conclusion.

A fireball is the obvious ordinary candidate, and the crew raised it first. Six seconds fits one. The level flight and the turn are what the two pilots could not square with it, and the record does not settle the question either way.

Hatch's UFO database is the only outside catalogue found to list the event. It dates it 13 September by Greenwich time and gives it as Project Blue Book case 59.

Why it sits where it does

L4 · OFFICIAL RECORD — a released government record names who saw it. Griffin and Polhemus reported together from one cockpit, and they are the two the record identifies. Nothing from outside the check-list stands beside their account in the archive. The tier measures sourcing, not truth. What split in two ahead of the Pan American plane is not resolved here.