Accident
Last updated: 25 October 2014
Status:Definitief
Datum:dinsdag 13 augustus 1996
Tijd:08:57 UTC
Type:Learjet 25B
Luchtvaartmaatschappij:MAC Aviation
Registratie: EC-CKR
Constructienummer: 25-184
Bouwjaar: 1974
Aantal vlieguren:4596
Motoren: 2 General Electric CJ610-6
Bemanning:slachtoffers: 0 / inzittenden: 2
Passagiers:slachtoffers: 0 / inzittenden: 1
Totaal:slachtoffers: 0 / inzittenden: 3
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:Northolt Airport (NHT) (   Verenigd Koninkrijk) show on map
Fase: Landing (LDG)
Soort vlucht:Zaken
Vliegveld van vertrek:Palma de Mallorca Airport (PMI/LEPA), Spanje
Vliegveld van aankomst:London-Northolt Airport (NHT), Verenigd Koninkrijk
Beschrijving:
Learjet 25B EC-CKR arrived near Northolt following a flight from Palma de Mallorca. Due to the presence of priority traffic which was due to depart Northolt at that time, the flight was extended down wind to a distance of 10 nm before the crew received vectors and descent instructions for the final approach to runway 25. At 3.5nm short of the runway the pilot was asked to confirm that his landing gear was down and locked as is normal procedure at Northolt. After some rephrasing of this question, the landing gear was confirmed down, however during this exchange the aircraft was seen to deviate above the glidepath. At 2.5 nm, landing clearance was confirmed and the aircraft was advised of the surface wind and the fact that there was a 4 kt tailwind. The aircraft was also advised that it was above the glide path. At the decision altitude which was at approximately half a mile from the runway the aircraft was still above the glidepath although seen to be correcting to it. On arrival at the runway the aircraft was observed to land some distance beyond the normal touchdown point. Towards the end of the landing roll it veered to the right and then swerved to the left and overran the end of the runway. It collided with three lighting stanchions and continued in a south-westerly direction towards the airfield boundary which is marked by a high chain-link fence. After bursting through the boundary fence the aircraft ran onto the A40 trunk road and was almost immediately in collision with a Ford Transit van on the east bound carriageway, and seriously injuring its driver. The aircraft came to rest in the left hand lane of the road with the van embedded in the right side of the fuselage immediately forward of the right wing.

CAUSES: The following causal fators were identified: (1) The commander landed the aircraft at a speed of 158 (+/- 10 kt) and at a point on the runway such that there was approximately 3,125 feet (952 metres) of landing run remaining.; (2) The commander did not deploy the spoilers after touchdown.; (3) The first officer did not observe that the spoilers had not heen deployed after touchdown.; (4) At a speed of 158 (+/- 10 kt) with spoilers retracted and given the aircraft weight and atmospheric conditions prevailing , there was insufficient landing distance remaining from the point of touchdown within which to bring the aircraft to a standstill.; (5) The commander allowed himself to become overloaded during the approach and landing. The safeguards derived from a two crew operation were diminished by the first officer’s lack of involvement with the final approach."

Bronnen:

Official accident investigation report
investigating agency: Air Accidents Investigation Branch (AAIB) - United Kingdom
report status: Final
report number: AAIB Bulletin 9/96
report released:01-SEP-1996
duration of investigation:19 days ()
download report: LearJet 25B, EC-CKR, 13 August 1996 (AAIB Bulletin 9/96)
cover

investigating agency: Air Accidents Investigation Branch (AAIB) - United Kingdom
report status: Final
report number: AAIB AAR 3/97
report released:03-JUL-1997
duration of investigation:324 days (10.8 months)
download report: Report on the accident to Gates Learjet 25B, EC-CKR , RAF Northolt, Middlesex on 13 August 1996 (AAIB AAR 3/97)

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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 Palma de Mallorca Airport en London-Northolt Airport bedraagt 1347 km (842 miles).

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