chunk: Setting out to refuel at tiny Howland Island, radio transmissions between USCGC Itasca, a Coast Guard picket ship, and Earhart's aircraft reveal a rising crisis. Earhart radios to Itasca that the sky has become cloudy and overcast. When Itasca attempts to radio her back, however, all Earhart gets is static. For the rest of the approach, Earhart cannot hear Itasca's transmissions, although they can hear hers. The Coast Guard radio operators realize that they do not have sufficient length to provide a "fix". Itasca has a directional finder with a dead battery, and weak radio communications prevent Earhart and USCG Itasca from making contact. Running low on fuel, Earhart and Noonan continue to fly on over empty ocean, as Earhart informs the Itasca that she is on position line 157-337, running north and south. She is not heard from again. A massive search effort is unsuccessful, but solidifies Earhart as an aviation icon.