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Accident
Last updated: 21 November 2017
Status:Schlussbericht
Datum:Samstag 19 November 1977
Zeit:21:35
Flugzeugtyp:Silhouette image of generic B722 model; specific model in this crash may look slightly different
Boeing 727-282
Fluggesellschaft:TAP Air Portugal
Kennzeichen: CS-TBR
Werknummer: 20972/1096
Baujahr: 1975-01-07 (2 years 11 months)
Betriebsstunden:6154
Anzahl Zyklen der Zelle:5204
Triebwerk: 3 Pratt & Whitney JT8D-17
Besatzung:Todesopfer: 6 / Insassen: 8
Fluggäste:Todesopfer: 125 / Insassen: 156
Gesamt:Todesopfer: 131 / Insassen: 164
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:Funchal Airport (FNC) (   Portugal)
Flugphase: Landung (LDG)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Lisboa-Portela de Sacavém Airport (LIS/LPPT), Portugal
Flug nach:Funchal Airport (FNC/LPFU), Portugal
Flugnummer:TP425
Unfallbericht:
TAP Flight 425 was a regular service from Brussels (BRU) to Funchal (FNC), Madeira with an en route stop at Lisbon (LIS). Weather conditions at Madeira were poor. It was raining and a 6/8 cumulus overcast at 1500 feet with a visibility of 3000 m made for a challenging approach.
The first NDB approach to runway 24 was discontinued at the 'MAD' NDB because the crew hadn't established visual contact with the runway. Heavy rainshowers were reported, but the flight crew reported seeing the runway lights when over the 'MAD' NDB for the second time. The aircraft touched down 2000 feet past the threshold with just 3000 feet runway length remaining. Thrust reversers were deployed and spoilers extended, but the 727 aquaplaned slightly and could not be stopped on the runway. The Boeing overran and plunged over a steep bank. It struck a stone bridge, shearing off the right wing. It then crashed almost vertically on to a beach about 130 feet below the level of the airport, bursting in flames.

Probable Cause:

CAUSA PROVÁVEL:
"A Comissão de Inquérito determinou como causa provável do acidente a impossibilidade de desacelerar a aeronave até à paragem no comprimento da pista, devido, provavelmente, aos seguintes factores:
- Condições meteorológicas muito desfavoráveis no momento da aterragem;
- Existência possível de condições para hidroplanagem;
- Velocidade de aterragem de Vref + 19 nós;
- Aterragem comprida motivada por um longo "flare";
- Correcção direccional brusca após o toque na pista."

PROBABLE CAUSE: (translated from Portuguese:
The Commission of Inquiry established as a probable cause of the accident the impossibility to decelerate the aircraft and to stop in the length of the runway due to, probably, the following factors:
- Very bad weather conditions at the time of landing;
- Possible existence of conditions for hydroplaning;
- Landing at a speed of Vref + 19 knots;
- Landing long with a long "flare";
- Sudden directional correction after touch down on the runway.

Accident investigation:
cover
Investigating agency: DGAC Portugal
Status: Investigation completed
Download report: Final report

Informationsquelle:
» Flight International 21 January 1978 (162)
» Flight International 26 November 1977 (1564)


Sicherheitsempfehlungen
After the accident, TAP stopped flying the Boeing 727-200 to Madeira, and started flying only the shorter Boeing 727-100 Series.

Between 1983 and 1986, a 200 meter extension of the runway was built; in 2000 the runway was again extended.

DGAC Portugal issued 3 Safety Recommendations

Show all AD's and Safety Recommendations

Fotos

photo of Boeing 727-282 CS-TBR
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Map
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 Lisboa-Portela de Sacavém Airport to Funchal Airport as the crow flies is 959 km (599 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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