Qualla: 1948 KLM Constellation Air Disaster

1948 KLM Constellation Air Disaster: Introduction

Thu, 28 May 2026 00:00:00 GMT

Koene Dirk Parmentier was one of the best pilots in the world. He had won the handicap division of the MacRobertson Air Race from England to Australia in 1934 with Jan Moll and crew in a KLM Douglas DC-2, finishing second overall behind the de Havilland Comet Grosvenor House in a flight that helped define modern long-distance aviation. By 1948 he was KLM's chief pilot. On the evening of 20 October that year, he was at the controls of a Lockheed L-049 Constellation named Nijmegen, registered PH-TEN, on a flight from Amsterdam to New York via Prestwick. He had thirty-eight other people aboard - passengers, crew, and an Irish co-pilot named Kevin Joseph O'Brien. Forty minutes after midnight, with the airport's runway lights in sight, the aircraft struck high-tension power lines and electricity pylons three miles inland of Prestwick. Everyone on board was killed.

1948 KLM Constellation Air Disaster: The People on Board

Thu, 28 May 2026 00:00:00 GMT

The thirty passengers were twenty-two Dutch, six German, one British, and one Irish. Among the Dutch was Bert Sas, the diplomat and former military attache to Berlin who in October 1939 had warned the Allies that Germany was preparing to invade France and the Low Countries - inte...

1948 KLM Constellation Air Disaster: Flight Context

Thu, 28 May 2026 00:00:00 GMT

The crash site lay about three miles inland of Glasgow Prestwick Airport (EGPK), approximately at 55.51 N, 4.50 W. The terrain rises from sea level at the runway to over 400 ft within three miles inland, with electricity pylons carrying the 132,000-volt south Scotland national grid line crossing the approach path. Recommended viewing altitude: 3,000-5,000 ft AGL by daylight in clear conditions. The approach to runway 32 (now 30) at Prestwick is the relevant aviation context. Visual landmarks include the Ayrshire coast immediately west, the town of Prestwick at the field, the village of Tarbolton in the hills inland, and the Carrick hills further south.

1948 KLM Constellation Air Disaster: The Charts Were Wrong

Thu, 28 May 2026 00:00:00 GMT

Inland of the runway the ground rises to over four hundred feet, and three miles to the northeast a set of wireless masts climbs above six hundred. Three miles inland from the runway, electricity pylons carry the main 132,000-volt national grid line for South Scotland. The KLM ap...

1948 KLM Constellation Air Disaster: The Reckoning

Thu, 28 May 2026 00:00:00 GMT

The court of enquiry into the crash named several causes. The ground authorities at Prestwick had failed to broadcast updated weather information that would have warned the crew of the falling ceiling. The crew had failed to time their downwind leg correctly for the alternate run...