USS VINCENNES on 3 July 1988. Environmental factors, commercial air information, data on Iran Air Flight 655, and relevant portions of the Peacetime Rules of Engagement (ROE) are then treated as discrete blocks of information before addressing the USS VINCENNES training and readiness, watch organization, overall combat system status, communications, and combat systems doctrine. With the foundation thus laid, the actual events of 3 July 1988 which led to the downing of TN 4131 are examined beginning with the surface engagement which formed an integral part of the decision process of the Commanding Officer, USS VINCENNES. The USS VINCENNES data recordings have enabled the investigation to break the critical time period, which comprised the air engagement, into a minutes and seconds sequence of specific actions as they occurred along a timeline. Finally, post-incident search and rescue efforts, and after action reports are addressed. Opinions and Recommendations conclude this report.
II. EXECUTIVE SUMMARY
A.INTRODUCTION.
1. On 3 July 1988, the USS VINCENNES (CG 49), operating in the Southern Persian Gulf as a unit assigned to Commander, Joint Task Force Middle East, downed a civilian airliner, Iran Air Flight 655 on a routine scheduled flight from Bandar Abbas to Dubai, with two SM-2 missiles.
2. The material condition, combat systems, training and personnel readiness of the ship were satisfactory.
3. The following narrative summarizes the events leading up to and including the downing of Iran Air Flight 655. It is in the form of a chronology because the situation leading up to, just prior to, and during the few critical minutes from Iran Air Flight 655 takeoff to downing are considered important to a full understanding of the incident. All times in the report are "Z" time.
B.PRE - 3 JULY SCENARIO.
1. In the three day period prior to the incident, there was heightened air and naval activity in the Persian Gulf. Iraq conducted air strikes against Iranian oil facilities and shipping 30 June through 2 July 1988. Iranian response was to step up ship attacks. Additionally, Iran deployed F-14's from Bushehr to Bandar Abbas. U.S. Forces in the Persian Gulf were alerted to the probability of significant Iranian military activity resulting from Iranian retaliation for recent Iraqi military successes. That period covered the fourth of July holiday weekend.
2. During the afternoon and evening hours of 2 July 1988
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