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Last updated: 4 December 2021
Status:
Date:Saturday 6 September 1969
Time:05:24 UTC
Type:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed EC-121R Super Constellation
Operator:United States Air Force - USAF
Registration: 67-21495
MSN: 4491
First flight: 1957
Crew:Fatalities: 0 / Occupants: 3
Passengers:Fatalities: 4 / Occupants: 13
Total:Fatalities: 4 / Occupants: 16
Ground casualties:Fatalities: 4
Aircraft damage: Damaged beyond repair
Location:Korat AFB (   Thailand)
Phase: Approach (APR)
Nature:Military
Departure airport:Korat AFB (VTUN), Thailand
Destination airport:Korat AFB (VTUN), Thailand
Narrative:
An EC-121R, 67-21495, callsign "Batcat 19", 554th Recon Sq, Korat RTAFB, was scheduled for a combat tactical mission.
Takeoff was initiated at 16:25 UTC, September 5. The flight to and within the combat area was uneventful, except for structural and engine icing which was reported as being light to moderate in intensity. Due to these icing conditions, Batcat 19 changed altitude a total of six times. Batcat 19 reported leaving the combat area the next day at 03:56 UTC for return to Korat with an estimated time of arrival of 05:15 UTC.
Batcat 19 made initial contact with Korat Approach Control as he was approximately fifty nautical miles east of the airport. The aircraft received radar vectors and descended to twenty-three hundred feet indicated altitude for a precision radar approach. He was thirteen nautical miles northeast of runway 24 when in
position to begin his approach. The aircraft, during the approach, drifted left of course, and at a point between one mile and two miles from runway 24 executed a missed approach. When queried by the Ground Control Approach (GCA) final controller as to the cause of the left drift, Batcat 19 reported as "We were just having a little trouble in the rain out here".
Batcat 19 remained under radar control, completed a right closed radar pattern, and received vectors to a point approximately eleven miles on the final approach course for runway 24. The approach lights were turned on to maximum brilliance along with the sequenced flashing lights (strobe).
The second precision approach appeared routine, with the aircraft generally on course, holding slightly above glide path until approximately one nautical mile from touch down. At decision height, the aircraft started dropping down through the glide path. The aircraft initially impacted the approach lights three thousand feet from the end of runway 24. It then struck the ground and eventually came to rest 1400 feet from the runway.

Sources:
» A. J. Northrup
» Larry Westin
» A Summary of the loss of EC-121R 67-21495


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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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