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737 excessive rotation speed - a hard act to follow

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737 excessive rotation speed - a hard act to follow

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Old 21st Dec 2014, 07:59
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Thumbs down 737 excessive rotation speed - a hard act to follow

Recently, an incident came to light involving an Indonesian registered Boeing 737 that would astonish Pprune readers used to hairy events common to that part of the aviation world. Edited for brevity. The take off run started on a 10,000 ft length runway.

The crew were apparently unaware of a problem with the captain's ASI until the 80 knot call by the first officer who was PM. The captain elected to keep going. The F/O called V1 and VR from his own ASI which was working normally. The captain continued the take off roll despite his own ASI giving a significant erroneous reading.

Approaching the end of the 10,000 ft runway the captain's ASI read 80 knots and the captain was forced to rotate to avoid an over-run. The aircraft then flew normally. Investigation revealed the actual ground speed at rotation was 298 knots, exceeding the maximum tyre speed limitation by close to 100 knots. A hard act to follow.
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Old 21st Dec 2014, 08:10
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Groundspeed

298 Knots!!!! Must be a world record for a 737 take off.

I imagine that the aircraft would have required an extensive inspection of both landing gear assemblies (if the incident was indeed reported at the end of the flight!!). Did they return to base or continue on to original destination?

Are there any other dangers associated with exceeding maximum tyre speed other than burst tyres & landing gear issues?
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Old 21st Dec 2014, 08:21
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737 excessive rotation speed - a hard act to follow

Geez... I'm really surprised that they did not burst all their tyres!
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Old 21st Dec 2014, 08:42
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You can't beat having a few extra knots for the wife and kids....
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Old 21st Dec 2014, 09:37
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Why didn't he loop it?
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Old 21st Dec 2014, 10:14
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Thanks BOAC.
Maybe the Captain had been reading up on 'improved climb' ?
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Old 21st Dec 2014, 10:21
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At least climb performance with an engine out was going to be adequate!!
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Old 21st Dec 2014, 10:26
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A reflection on CRM in that particular environment that the FO didn't seem to take over and complete the take off themself.
In some Asian cultures - and others - there is no way an F/O would ever take over from the captain who is regarded as a Deity. We have various acronyms to describe flight safety issues. CRM/TEM/CFIT for example. The latest is LOF or Loss of Face
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Old 21st Dec 2014, 10:30
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Flap overspeed by at least 50 knots. Quite impressive safety margins...
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Old 21st Dec 2014, 10:30
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No warnings on the 737 for exceeding max tyre speed?

Or disabled because of ASI disagree?
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Old 21st Dec 2014, 10:34
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Do you actually believe this?

I would wait until there is at least something more factual to back this up.
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Old 21st Dec 2014, 10:42
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I'd believe anything after some clown in SE Asia tried to get a 737 to land at a ridiculous speed ( may have been 200kts) about half way down the runway a few years back. The f/o was squawking a bit but didn't actually intervene. This seems mild by comparison.
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Old 21st Dec 2014, 10:44
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737 excessive rotation speed - a hard act to follow

At what speed will the thing finally give in and start flying anyway?!! Short of having the stick pushed forward!
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Old 21st Dec 2014, 11:00
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Originally Posted by Quantas_A380
No warnings on the 737 for exceeding max tyre speed?

Or disabled because of ASI disagree?
No warning, although it's quite easy to do it during Improved Climb and hot & high operations...
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Old 21st Dec 2014, 11:34
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At what speed will the thing finally give in and start flying anyway?!! Short of having the stick pushed forward!
That was my first thought, too.

Frankly, the whole thing sounds apochryphal. But if any can provide a link to the investigation report of what would surely have been classified as a serious incident, I'll stand corrected.
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Old 21st Dec 2014, 11:41
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See,if it were airbus,the stick would have gone up by itself
Case of an incapable pilot(s) or pilot incapacitation?
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Old 21st Dec 2014, 12:03
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It is probably the World land speed record for a tricycle............

It certainly breaks Gary and George's record in the T5 Lighting at Coltishall all those years back.
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Old 21st Dec 2014, 12:23
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737 excessive rotation speed - a hard act to follow

298 knots on the runway? I'd have to see the report. Sounds unlikely.
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Old 21st Dec 2014, 12:43
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MH - remember this is PPrune.........you get what you pay for here
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Old 21st Dec 2014, 14:19
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And nobody is suggesting, that the human sensors in the cockpit should have noticed that those big markers on the side of the runway were passing along quite rapidly on this takeoff?
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