Page:Iran Air Flight 655 investigation.djvu/120

 (3) Semi-annual check for the OE120 IFF Phased Array Antenna was last completed in February 1988 with its next scheduled check to be completed on 12 July 1988.

(4) Upon the completion of the OE120 July Semi-Annual PMS check of the OE120 IFF antenna, the following discrepancies were noted: Phase Shifter had no power out; #12 was 1.0 db below PMS Spec; one Phase Shifter was within spec. The OE 120 has a total of 16 phase shifters.

(5) [].

(6) The CASREP summary for USS VINCENNES shows no significant degradations of AEGIS Combat System as of the 8 o'clock reports for 2 July 1988, with the exception of CIWS (close in weapons system) Mount 22. The data from NWSC Dahlgren substantiates the excellent performance of the system.

(7) The SPY-1A signal processor alignment was completed during the last week of April 1988 and the first week of May 1988. Operational Performance Tests (OPTS) were run weekly with no significant degradation. The system had been operational almost non-stop since arrival in Gulf. Its performance was exceptional.

(8) One of the consoles in CIC(AIC) was down.

(9) At the time of the incident, Mount 22 (CIWS) was down and Mount 21 was in "AAW AUTO" mode with "hold fire" on.

d. Communications

(1) []

(2) USS VINCENNES's primary radio telephone talker for [] was the FAAWC "GW". He was directly responsible for relaying both the surface and air tactical picture, as seen on USS VINCENNES, along with the force air picture, as seen on USS SIDES and USS ELMER MONTGOMERY, to "GB".

(3) USS VINCENNES internal net 15 is designated for warfare coordinators only, i.e. CO, TAO, OOD, SSWC, CSC, TIC.

(4) On 3 July 1988, the following CIC operators were using net 15 or 16 in addition to warfare coordinators: FWC, IDS, EWS, RSC, SITREP Officer at ECDA, EWCO and various other stations that had "punched" into the net.

(5) Internal communications had to be shifted between net 15 and 16 due to degradation of the CKT during the 3 July 1988 events.