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Criminal Occurrence
Last updated: 21 October 2017
Status:Definitief
Datum:zondag 3 juli 1988
Tijd:10:24
Type:Silhouette image of generic A30B model; specific model in this crash may look slightly different
Airbus A300B2-203
Luchtvaartmaatschappij:Iran Air
Registratie: EP-IBU
Constructienummer: 186
Bouwjaar: 1982-03-16 (6 years 4 months)
Aantal vlieguren:11497
Motoren: 2 General Electric CF6-50C2
Bemanning:slachtoffers: 16 / inzittenden: 16
Passagiers:slachtoffers: 274 / inzittenden: 274
Totaal:slachtoffers: 290 / inzittenden: 290
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:74 km (46.3 mijl) SW van Bandar Abbas, Iran [Strait of Hormuz] (   Indische Oceaan)
Fase: Kruisvlucht (ENR)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Bandar Abbas Airport (BND/OIKB), Iran
Vliegveld van aankomst:Dubai Airport (DXB/OMDB), Verenigde Arabische Emiraten
Vluchtnummer:IR655
Beschrijving:
Flight IR451 arrived at Bandar Abbas (BND) from Tehran (THR) at 08:40. The Airbus A300 was to continue to Dubai (DXB) as flight IR655. Prior to departure the crew received an enroute clearance to Dubai via the flight planned route A59 and A59W at FL140. The flight took off from runway 21 at 10:17 hours and climbed straight ahead.
Two minutes later, the crew reported leaving 3500 feet for FL140 on Airway A59, estimating MOBET at 06:53 UTC (10:23 Iran time). At 10:24:00 the aircraft passed MOBET out of FL120. At 10:24:43 two Airbus was hit by surface-to-air missiles. The tail and one wing broke off as a result of the explosions. Control was lost and the aircraft crashed into the sea.
The missiles were fired by the US Navy cruiser USS Vincennes. It was operating in the area together with the frigates USS Elmer Montgommery and USS John H. Sides. They were to protect other ships in the area.
At about the time the Airbus took off, the radar aboard the USS Vincennes picked up a brief IFF mode 2 response, which led to the mistaken identification of the Airbus as a hostile F-14 aircraft. The USS Vincennes issued 7 challenges on the Military Air Distress (MAD) frequency 243 MHz, addressed to 'Iranian aircraft', 'Iranian fighter' or 'Iranian F-14'. These messages were followed by three challenges on the IAD (International Air Defence) radio frequency.
Due to increasing tension in the area - on May 17, 1987 an Iraqi Mirage had attacked USS Stark - all aircraft in the area had to monitor 121.5 Mhz: the International Air Defence - IAD radio frequency. There was no response.
Meanwhile radar operators were monitoring the Aegis screens. They reported that the incoming plane was descending with an increasing speed. In fact, the Airbus was climbing. Considering itself and USS Montgomery under aggression, USS Vincennes took the ultimate decision to launch missiles against the perceived hostile target at 10:24:22.
It remains uncertain whether the IR655 flight crew (only able to monitor the IAD, not the MAD frequencies) would have been able to rapidly identify their flight as the subject of the challenges made by the USS Vincennes.

Probable Cause:

CAUSES: "The aircraft was perceived as a military aircraft with hostile intentions and was destroyed by two surface-to-air missiles ."

Accident investigation:
Investigating agency: ICAO
Status: Investigation completed
Download report: Final report

Bronnen:
» ICAO Adrep Summary 3/88 (#1)
» ICAO Circular 260-AN/154 (27-51)


Veiligheidsmaatregelen

ICAO issued 8 Safety Recommendations

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photo of Airbus A300B2-203 EP-IBU
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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Bandar Abbas Airport en Dubai Airport bedraagt 239 km (149 miles).
Accident location: Exact; as reported in the official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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