Ex 12 Performance Landing & Ex 13 Performance Take Off (Accident Examples)


Below are two different examples of incidents relating to performance take of and landing. The first one (pictured) is a take off incident on a grass runway at Breighton and the second a landing incident on a tarmac runway at Sturgate.

 

HDM ERM NEWS SOPHIE KITCHING 01-04-16 NOT MAIL COPYRIGHT The scene of an aeroplane crash. Pictures: Sean Stewart

The pilot reported that following the takeoff from the grass runway at Breighton, he intended to conduct a touch-and-go before flying to his home airfield at Kemble. The circuit was flown as normal and after touchdown full power was applied. The aircraft did not seem to accelerate, so the pilot closed the throttle and aborted the takeoff; however he was unable to stop and overan the end of the runway. The aircraft was severely damaged when it subsequently collided with a hedge. The pilot believes that the lack of acceleration might have been due to a possible combination of the soft grass surface and carburettor icing.

 

 

Piper PA-28-161 Cherokee Warrior II, G-BNXE

19 April 2016 at 1230 hrs-Location: Sturgate Airfield, Lincolnshire

Persons on Board: Crew – 1 Passengers – 2

Injuries: Crew – None Passengers – None

Nature of Damage: Damage to front and right wheel fairings and propeller and engine shock-loaded

Commander’s Licence: Light Aircraft Pilot’s Licence Commander’s Age: 73 years

Commander’s Flying Experience:1,290 hours (of which 850 were on type)

Last 90 days – 5 hours Last 28 days – 3 hours

Information Source: Aircraft Accident Report Form submitted by the pilot

The pilot was approaching to land on Runway 27 at Sturgate Airfield which had a dry asphalt surface and a length of 820 m. He described the wind as “light and variable”. He had made several ‘blind’ radio calls to which had received no response, during which he noted that the wind strength appeared to be about 4 kt.

On final approach, the pilot felt that he was slightly high due to noise abatement procedures over local houses and selected two stages of flap. On touchdown he felt that the wind had calmed completely, causing him to float further than he would have expected, with the result that the aircraft ran off the end of the runway and into an area of ploughed land.

Yet again another example of an AAIB report which does not contain any useful advice to prevent recurrence.

On reading the report it’s obvious that the pilot was uncomfortable and uneasy about this approach and landing. If he had translated that unease into a positive command decision and flown a go around, I wouldn’t be writing this. However the selection of flaps 2 instead of flaps full and the precedence given to a noise abatement procedure rather than the safety of the aircraft shows some flawed thinking and very likely, poor training. The first priority is the safe flightpath  of the aircraft, not a noise abatement procedure.

We are not told of the weight of the aircraft or the speeds flown (another  example of the inspectors lack of investigation, they just seem to accept what is written with no further communication) so it’s difficult to consider that but 820 metres landing distance is a respectable distance to achieve a successful landing in a PA28 so we must assume that the threshold speed and height was too high.

Unfortunately the present ‘Tiger Moth’ syllabus of PPL training seems to differentiate between a short field or performance landing and an ordinary landing to an extent that many pilots don’t seem to really know when to adopt a short field technique. Why not try my technique, fly every approach as a short field or performance landing and just make the brake application the only difference. Why fly overspeed at the threshold anyway, you’ve only got to get rid of that speed with the brakes or at worst with the downwind hedge!

So;

Decision making is about prioritising and flight path takes priority over noise abatement.

Have a stable height target (ours is 200 feet) If you are not stable at 200 feet-GO AROUND

Have a threshold target speed. If you’re outside that speed – GO AROUND!

If you find you are floating and are concerned about the remaining landing distance- GO AROUND!

If landing distance is a concern use flaps full but be stable by 200 feet

Ensure you can fly (and are in current practice) a short field approach using the speeds and technique as described in the flight manual.

Beware of bar room experts who say add 10 knots for your family, fly the published speeds.

Read the CAA safety sense leaflets http://publicapps.caa.co.uk/modalapplication.aspx?appid=11&mode=list&type=sercat&id=21 on

Contact the AAIB and ask then why they cannot publish some recommendations as I have done above. After all they state their aim is to investigate accidents and make safety recommendations to prevent recurrence!

 

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2 thoughts on “Ex 12 Performance Landing & Ex 13 Performance Take Off (Accident Examples)

  1. Captain John you have me confused – the pilot was attempting a touch and go at Breighton on a grass runway (paragraph 1) but the accident report says he was landing at Sturgate airfield on a tar surface …. why the completely different information??

  2. Two different accidents Peter! The picture and caption does not relate to the AAIB accident report, I will make this clearer. Thanks

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