PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Accidents and Close Calls (https://www.pprune.org/accidents-close-calls-139/)
-   -   Beech Premier down on apprach RWY 15 WMSA (https://www.pprune.org/accidents-close-calls/654275-beech-premier-down-apprach-rwy-15-wmsa.html)

fdr 17th Aug 2023 12:08

Beech Premier down on apprach RWY 15 WMSA
 
Kuala Lumpur - Bad VLJ accident, 8 on board, 2 on ground, just north of Shah Alam, at the entrance of a housing complex. US rego, N28JV, operated locally. Flight from Pulau Langkawi to Subang, WMSA, Kuala Lumpur.

R.I.P.



magyar_flyer 17th Aug 2023 20:46

Can not post them but few graphic dashcam video are making the rounds.
Apparently straight nose dive to impact. Aircraft seems structurally intact. Odd

sleeper 17th Aug 2023 21:05


one link several vieuws.

FUMR 17th Aug 2023 21:26

From what I saw on FR24 the aircraft was established on final for runway 15 and roughly 3 miles out when it suddenly veered off track. Seemed very sudden.

Giboman 18th Aug 2023 04:16

looks way too fast to be in a stall

physicus 18th Aug 2023 08:01

assuming 30fps video in the link above, they were impacting at about 210m/s (~750km/h / ~400 kts). Doesn't look like gear or flaps are out either. Certainly not looking like a stall recovery at those speeds...

physicus 18th Aug 2023 08:58

Looked at the ADS-B data on RealTraffic. Looks like an uneventful ILS/GS capture on AP with MCP alt set to 2500ft at 185kts GS, then descending on the glide with matching descent rate for an established approach, then reducing speed 150ish kts. On passing FL010 (1000ft at std pressure alt), ground speed dips to 144kts, and position starts to turn hard right. No more data updates after that except for position data, showing tight right turn, perhaps a stall.

They certainly didn't finish the approach check as the missed approach altitude wasn't set on the MCP (remained 2500ft til the end, should be 3000ft for LOC/ILS15). Could be a hint that some other critical items were forgotten, like flaps, and gear (missing from the video posted above as well).

What's the clean stall speed of a Premier 1?

Can't seem to attach a zip file with kml/csv data - PM me if interested.

Miles Magister 18th Aug 2023 10:11

More interesting though is what is the stall speed at heavy weight with 8 people on board. This is just something to be aware of.

1southernman 18th Aug 2023 11:31

Single pilot owner/operator?...I believe this Beech was produced to compete with Citation, etc....

FUMR 18th Aug 2023 13:17


Originally Posted by 1southernman (Post 11486930)
Single pilot owner/operator?...I believe this Beech was produced to compete with Citation, etc....

Was reported as 2 crew, but that of course excludes what qualifications the RHS may have had.

1southernman 18th Aug 2023 13:42


Originally Posted by FUMR (Post 11487010)
Was reported as 2 crew, but that of course excludes what qualifications the RHS may have had.

Thanks for the info and that's true about RHS...Just saw that report and it also says a charter flight?...IIRC US FAR 135, charter with pax, used to require 2 crew on SP Citations...SP ok for charter freight (fun flying) and Part 91 ops...

JanetFlight 18th Aug 2023 18:27

Clear video with final seconds of flight...forgive my personal humble point of view... Almost seems deriberately... weird!!



twitter.com/i/status/1692174661684167065


ETOPS 18th Aug 2023 20:44

Looks like gear and flaps up and high speed. Why no recovery inputs?

megan 19th Aug 2023 00:57

Aircraft was N28JV operated by Jetvalet Sdn Bhd, also operate a G4 and Beech 4000, established during the pandemic by ex airline folk.

physicus 19th Aug 2023 01:30

Here are a couple of plots. The aircraft was equipped with decent ADS-B out capability which includes BDS6,0 messages. This means we know what the MCP altitude and headings were set to. Hence my post above that the MA alt was not set at above 1000ft AGL (stable approach criteria) so likely a check was missed. IAS is also transmitted in these messages and we therefore know the speed decayed to as low as 144kts before a sudden increase in geometric descent rate. Note the geometric rates are calculated from the ADS-B position messages, not from the barometric rate, and are thus the only data points providing vertical speed info during the last 10 seconds.


https://cimg2.ibsrv.net/gimg/pprune....5b6eb041a3.jpg

WhoFlungDung 19th Aug 2023 01:40

Flash Behind Aircraft?
 

Originally Posted by JanetFlight (Post 11487169)
Clear video with final seconds of flight...forgive my personal humble point of view... Almost seems deriberately... weird!!

https://twitter.com/kltrafficupdate/...ibase%2F343582

What is the flash of light from the tail of the aircraft at the 2 second mark?

physicus 19th Aug 2023 02:00

I think that's a sunlight reflection off the leading edges of the wings. Seems to roughly align with sun being overhead slightly to the left (check shadows of road markers).

megan 19th Aug 2023 07:02

Just been reading the report on a Bombardier Challenger 605 accident where they overcooked the turn to final.

At 1318:09, the stick shaker engaged again followed immediately by the stick pusher engaging, the airplane was on a southeasterly heading when it entered a rapid left roll. The airplane was in a 111° left-wing-low bank angle at 1318:11 and 1 second later it was in a 146° right-wing-low bank angle and an approximate 30° nose-low attitude, just before the airplane impacted terrain and a post crash fire ensued
Seems a lot of right bank on, wonder if similar.

physicus 19th Aug 2023 07:42

this Premier accident doesn't look like anyone "overcooked" anything - whatever that means. Looks more like simply forgot flaps and slowed down into a stall in a heavy airplane. Controlled FLight outside the enveloPe - CFLOP. To mint a new term...

atakacs 19th Aug 2023 08:53


Originally Posted by ETOPS (Post 11487220)
Looks like gear and flaps up and high speed. Why no recovery inputs?

And seemingly very high speed.
I guess it had full suite of FDR ?


All times are GMT. The time now is 11:46.


Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.