PIA A320 Crash Karachi
Incidentally there is something weird about the report’s two sets of images of the simulated external view. The bulk of the image areas look to me to have been slightly “squished” vertically, but within them the PFD and Nav Display seem to have been stretched the other way – see the contrast between them and the ECAM. Unless Airbus these days have moved away from having square displays of course. Although this is a simulation, it does rather call into question the value of these picture in showing the visual discrepancy!
Report images vs Airbus original
Report images vs Airbus original
The Captain’s continuation bias was so extreme that once over the runway, a long way down but still airborne, he selected full reverse thrust, and applied maximum brake pedal inputs as the engines nacelles hit the runway.
BTW, as a designer, this sort of thing drives us crazy - if there is some sort of latent fault in the air/ground inhibit that allows a reverser to deploy while still airborne - you may have a very, very bad day.
Did the T/Rs actually deploy, or did he just command them (I've not read the report)? I know that (from looking at DFDR data), that some pilots will start pulling the T/R piggyback levers before touchdown and holding them against the 'deploy baulk' (which prevents above idle reverse thrust until the reverser is basically deployed) - letting the 'weight-on-wheels' signal inhibit actual deployment until they touch down - was that what this pilot was doing?
BTW, as a designer, this sort of thing drives us crazy - if there is some sort of latent fault in the air/ground inhibit that allows a reverser to deploy while still airborne - you may have a very, very bad day.
BTW, as a designer, this sort of thing drives us crazy - if there is some sort of latent fault in the air/ground inhibit that allows a reverser to deploy while still airborne - you may have a very, very bad day.
We're not talking about a Hawker - we're talking an A320. Especially since Lauda, most commercial airliners rather robust logic to prevent in-flight deployment since - with big underslung wing mounted turbofan engines, and in-flight deployment is likely catastrophic. I'm just unsure about the A320 (some use radio altimeter instead of Weight-on-Wheels, which could potentially allow reverse after a wheels-up landing, hence the question).
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vilas
This is the first I've ever heard of this.
Stabilisation height is based on VMC/IMC .. and 500'/1000' AAL respectively.
IFR/VFR is an entirely different topic and relates to the flight plan, got nothing to do with stabilisation height.
This is the first I've ever heard of this.
Stabilisation height is based on VMC/IMC .. and 500'/1000' AAL respectively.
IFR/VFR is an entirely different topic and relates to the flight plan, got nothing to do with stabilisation height.
tdracer, don't worry: as per this report
ara 1.1.6.13.
"At 09:34:23, crossing 07 ft RA, 200 kts CAS (VFE CONF3 + 15 kts), full Reverse Thrust was selected on both Engines. Thrust remained at IDLE, but Thrust Reversers (TR) remained locked and did not deploy as aircraft was airborne (no ground condition detected by the ECU). ENG REV SET ECAM Alert associated with selection of Reverse Thrust in air was triggered along with a Single Chime Aural Alert and Master Caution Amber light.
If you want to know about how HS121 thrust reversers came close to stopping NASA's Air Safety Reportingf System ever being implemnented, send me a PM.
ara 1.1.6.13."At 09:34:23, crossing 07 ft RA, 200 kts CAS (VFE CONF3 + 15 kts), full Reverse Thrust was selected on both Engines. Thrust remained at IDLE, but Thrust Reversers (TR) remained locked and did not deploy as aircraft was airborne (no ground condition detected by the ECU). ENG REV SET ECAM Alert associated with selection of Reverse Thrust in air was triggered along with a Single Chime Aural Alert and Master Caution Amber light.
If you want to know about how HS121 thrust reversers came close to stopping NASA's Air Safety Reportingf System ever being implemnented, send me a PM.
If you don't want any risk, don't do anything. What's the most straightforward way to do flight safety ? Remove flight, you're left with safety.
I am talking about "risks" that remain within the realm of acceptable risks for commercial airline passengers, that is, something still extremely remote.
