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Last updated: 1 December 2015
Datum:woensdag 14 november 1990
Type:Silhouette image of generic DC93 model; specific model in this crash may look slightly different
McDonnell Douglas DC-9-32
Registratie: I-ATJA
Constructienummer: 47641/746
Bouwjaar: 1974
Aantal vlieguren:43894
Aantal vluchten:43452
Motoren: 2 Pratt & Whitney JT8D-9A
Bemanning:slachtoffers: 6 / inzittenden: 6
Passagiers:slachtoffers: 40 / inzittenden: 40
Totaal:slachtoffers: 46 / inzittenden: 46
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Stadlerberg (   Zwitserland)
Fase: Nadering (APR)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Milano-Linate Airport (LIN/LIML), Italië
Vliegveld van aankomst:Zürich-Kloten Airport (ZRH/LSZH), Zwitserland
Alitalia Flight 404 took off from runway 36R at Linate Airport in Milan, Italy at 18:36. After an uneventful flight the, AZ404 was cleared to descend to 4000 feet and to make an ILS approach to runway 14 at Zürich-Kloten Airport, Switzerland. At 14 nm from the runway 14 threshold, the aircraft captured the localizer. At about 11,5 nm short, the aircraft descended through the cleared altitude of 4000 feet. Descent from 4000 feet was only allowed after intercepting the glide path at 8 nm. The aircraft descended about 1400 feet below the glide path until it struck trees and crashed at 5,2 nm from the runway.

PROBABLE CAUSE: "False indication of VHF NAV unit No.1 in the aircraft; probable altimeter misreading by the PIC; no GPWS warning in the cockpit; pilots not aware of the possibility of incorrect indications in the NAV equipment in use (without flag-alarm); inadequate failure analysis by the pilots; non-compliance with basic procedural instructions during the approach; COPI's initiated go-around procedure aborted by the PIC; the approach controller not observing the leaving of the cleared altitude of 4000ft QNH before the FAP."

» Air Safety Week 5.4.1993 (p. 4,5)
» NTSB Safety Recommendations A-92-8 and 9


photo of McDonnell Douglas DC-9-32 I-ATJA
photo of McDonnell Douglas DC-9-32 I-ATJA
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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 Milano-Linate Airport en Zürich-Kloten Airport bedraagt 230 km (144 miles).

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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  • 42e ongeval
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