Beech Premier down on apprach RWY 15 WMSA
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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.
R.I.P.
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.
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...
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.
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.
Last edited by physicus; 18th Aug 2023 at 09:32. Reason: adding zip file
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Clear video with final seconds of flight...forgive my personal humble point of view... Almost seems deriberately... weird!!
twitter.com/i/status/1692174661684167065
twitter.com/i/status/1692174661684167065
Last edited by JanetFlight; 19th Aug 2023 at 02:14.
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.
Last edited by physicus; 19th Aug 2023 at 02:11.
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Flash Behind Aircraft?
Clear video with final seconds of flight...forgive my personal humble point of view... Almost seems deriberately... weird!!
https://twitter.com/kltrafficupdate/...ibase%2F343582
https://twitter.com/kltrafficupdate/...ibase%2F343582
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).
Just been reading the report on a Bombardier Challenger 605 accident where they overcooked the turn to final.
Seems a lot of right bank on, wonder if similar.
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
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...