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Last updated: 18 November 2018
Status:Definitief
Datum:zondag 13 februari 1955
Tijd:19:53
Type:Silhouette image of generic DC6 model; specific model in this crash may look slightly different
Douglas DC-6
Luchtvaartmaatschappij:Sabena
Registratie: OO-SDB
Constructienummer: 43063/60
Bouwjaar: 1947
Bemanning:slachtoffers: 8 / inzittenden: 8
Passagiers:slachtoffers: 21 / inzittenden: 21
Totaal:slachtoffers: 29 / inzittenden: 29
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Monte Terminillo (   ItaliŽ)
Fase: Kruisvlucht (ENR)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Brussel-Haren Airport, BelgiŽ
Vliegveld van aankomst:Roma-Ciampino Airport (CIA/LIRA), ItaliŽ
Vluchtnummer: 503
Beschrijving:
The Sabena DC-6 departed Brussels (BRU), Belgium at 17:17 on a scheduled flight to Rome-Ciampino (Italy), Kano (Nigeria) and Lťopoldville (now Kinshasa, D.R.Congo).
Contact with Ciampino ACC was initiated according to plan at 19:29 , at which time the aircraft had passed over Florence at 17500 feet. At 19:48 Ciampino control asked the aircraft whether it had passed over Viterbo. Instead of answering this question directly, the crew inquired whether the Viterbo NDB was on full power. The controller replied that another aircraft had overflown the Viterbo NDB shortly before and had found it to be operating properly.
At 19:51 GMT the aircraft stated that it had passed over Viterbo NDB one minute previously and requested clearance to descend to 5500 feet ; this was granted . One minute later it inquired whether the Ciampino ILS were operating and received an affirmative reply. At 19:53, OO-SDB called Rome control but communication was suddenly cut off.
The airplane hit the slope of the Costone dell'Acquasanta at a height of 1700 metres.

Probable Cause:

PROBABLE CAUSE: "The navigation was conducted without making use of all such radio aids as would have permitted checking, and consequently correcting the drift of the aircraft whereas the crew actually remained unaware of the drift. In fact, instead of making sure they were over the Viterbo beacon, they merely held that conviction, and therefore the approach procedure to the Rome terminal area (which prescribes overflight of the Viterbo beacon) was erroneously applied. The following contributing causes may be taken into consideration, 1) crosswind to the route stronger than forecast; 2) weather conditions particularly unfavourable to radio reception in MF."

Bronnen:
» ICAO Accident Digest Circular 50-AN/45 (68-73)


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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 Brussel-Haren Airport en Roma-Ciampino Airport bedraagt 1179 km (737 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Networkís 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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Douglas DC-6

  • 704 built
  • 22e ongeval
  • 17e dodelijk ongeval
  • 10e zwaarste ongeval (toen het plaatsvond)
  • 34e zwaarste ongeval (op dit moment)
» safety profile

 ItaliŽ
  • 6e zwaarste ongeval (toen het plaatsvond)
  • 21e zwaarste ongeval (op dit moment)
» safety profile