- Launched: April 17, 1967, 07:05:00 UTC
- Landed: April 20, 1967, 00:04:53 UTC
- Last Contact: May 3, 1967
Surveyor IV carried the same payload as Surveyor III. After a faultless flight to the Moon, radio signals from the spacecraft abruptly ceased during the terminal descent phase, approximately 2½ minutes before touchdown. Contact with the spacecraft, was never re-established.