Date:	Tuesday 18 August 1970
Time:	13:40
Type:	Tupolev Tu-124V
Owner/operator:	CSA Ceskoslovenské Aerolinie
Registration:	OK-TEB
MSN:	4351504
Year of manufacture:	1964
Engine model:	Soloviev D-20P
Fatalities:	Fatalities: 0 / Occupants: 20
Other fatalities:	0
Aircraft damage:	Destroyed, written off
Category:	Accident
Location:	Zürich-Kloten Airport (ZRH) -   Switzerland
Phase:	Landing
Nature:	Passenger - Scheduled
Departure airport:	Praha-Ruzyne International Airport (PRG/LKPR)
Destination airport:	Zürich-Kloten Airport (ZRH/LSZH)

Narrative:
Flight OK744 departed Prague for a flight to Zurich. Problems with the cabin pressure during the descent forced the flight engineer to control the pressure manually. When approaching runway 16, the captain ordered the flight engineer to lower the gear, but the engineer didn't hear it being preoccupied with the cabin pressure. The approach was continued and the Tupolev touched down on its belly, sliding for 875 m down the runway.
The aural gear warning system had been turned off early in the approach.

Jet-Airliner Unfälle seit 1952 / J. Richter, Chr. Wolf

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) ETH-Bibliothek Zürich, Bildarchiv / Swissair; Zürich-Kloten Airport (ZRH); 18 August 1970; (CC:by-sa)

photo (c) via Werner Fischdick; Genève-Cointrin Airport (GVA); August 1970

photo (c) Fortepan: UVATERV; Budapest-Ferihegy Airport (BUD/LHBP); 1968; (CC:by-sa)

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