Flugunfall 03 JUL 1970 einer de Havilland DH-106 Comet 4 G-APDN - Sierra del Montseny
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Status:Accident investigation report completed and information captured
Datum:Freitag 3 Juli 1970
Flugzeugtyp:Silhouette image of generic COMT model; specific model in this crash may look slightly different
de Havilland DH-106 Comet 4
Fluggesellschaft:Dan-Air Services
Kennzeichen: G-APDN
Werknummer: 6415
Baujahr: 1959-09-29 (10 years 9 months)
Triebwerk: 4 Rolls-Royce Avon 524
Besatzung:Todesopfer: 7 / Insassen: 7
Fluggäste:Todesopfer: 105 / Insassen: 105
Gesamt:Todesopfer: 112 / Insassen: 112
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:Sierra del Montseny (   Spanien)
Flugphase: Während des Fluges (ENR)
Betriebsart:Internationaler außerplanmäßiger Passagierflug
Flug von:Manchester International Airport (MAN/EGCC), Großbritannien
Flug nach:Barcelona-El Prat Airport (BCN/LEBL), Spanien
Comet G-APDN departed Manchester at 16:08 for a charter flight to Barcelona. ATC delays in the Paris area resulted in a different route to be flown. At 17:53 the pilot contacted Barcelona ACC. The aircraft was then cleared to descend from FL220 to FL90. At 17:59 the flight switched to Barcelona Approach. Barcelona Approach cleared the crew direct to the Sabadell beacon and cleared them to descend to FL60. While carrying out a left turn to a heading of 140deg, as instructed by Barcelona Approach, the crew mistakenly reported passing the Sabadell NDB. At that time another aircraft overflew Sabadell, causing the error to go unnoticed by the controller. The controller then cleared the Comet to descend to 2800 feet. At approx. 18:05 UTC the aircraft struck beech trees on the north-east slopes of the cloud-covered Les Angudes peak at an altitude of about 3800 feet and crashed.

Probable Cause:

PROBABLE CAUSE: "To sum up, it can be deduced that the combination of erroneous information regarding reporting points, together with the existence of a radar echo over Sabadell NDB (coinciding with the report from the aircraft of passing that reporting point), led both the aircraft and APP to believe, erroneously, that the aircraft was already over Sabadell; this was an involuntary error (on both sides: ATC and aircraft) which was physically impossible to correct when Air Traffic Control realised it."

Accident investigation:

Investigating agency: AIB (U.K.)
Status: Investigation completed
Duration: 1 year and 3 months
Accident number: AAR 1/1972
Download report: Final report

» Flight International 09 July 1970 (39)


photo of DH-106-Comet-4-
photo of de-Havilland-DH-106-Comet-4-G-APDN
accident date: 03-07-1970
type: de Havilland DH-106 Comet 4
registration: G-APDN

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Manchester International Airport to Barcelona-El Prat Airport as the crow flies is 1369 km (856 miles).
Accident location: Exact; as reported in the official accident report.

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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DH-106 Comet

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