Investigators detail
A330's short landing at Cologne
16 MARCH, 2017 - SOURCE:
FLIGHTGLOBAL PRO - BY: DAVID KAMINSKI-MORROW - LONDON
German investigators
probing the short landing by a Hi Fly Airbus A330-200 at Cologne have
disclosed that the jet’s descent rate increased after its autopilot was
disengaged.
Investigation authority BFU, in
an interim statement, says the jet (CS-TQW) touched down 21m short of the
runway threshold, damaging runway lighting.
The aircraft had been conducting
a night arrival from Reykjavik to runway 32L – the much-longer parallel 32R
having been closed – but was unable to accept a satellite-based approach and
requested a non-precision approach with radar vectors.
Three pilots had been in the
cockpit at the time and the monitoring pilot confirmed visual contact with the
approach lights, after which the tower gave landing clearance.
BFU analysis of the flight-data
recorder showed that the approach had been automatic from 2,200ft, at an
airspeed of 128kt, with a rate of descent around 500-750ft/min.
As the aircraft reached 690ft
the autopilot was disconnected – after which, the inquiry says, the rate of
descent increased to 895ft/min.
Upon receiving an automated
call-out at 30ft, one of the crew members stated: “We are getting slightly
low.”
The third pilot, on the
jumpseat, noted after the landing that the precision-approach path indicator
lights had shown “four red” – suggesting a descent far below the glidepath –
while the other two pilots had seen at least three red PAPI lights.
Weather conditions at the time
of the landing, on 18 September last year, had been poor, with reduced
visibility and light rain.
BFU states that the captain told
investigators that the approach had been stable until around 200ft above
ground, at which point vertical corrections were made to the flight path.
He also said he was aware that
the available runway was short – with an available distance of 1,691m – and
that it was wet from the rain, and he wanted to ensure the aircraft was
“deliberately” put down firmly.
BFU says the left-hand main landing-gear
touched down 21m before the threshold, and the right-hand at 15m before. The
right main-gear struck a lamp and sustained tyre damage.
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