Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
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- Valerio Ricciardi
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Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
Primissimi lanci di agenzia.
Si parla di soli otto feriti su circa 80 passeggeri a bordo.
Proveniva da Minneapolis; non so ancora nulla al momento sulla dinamica.
Si parla di soli otto feriti su circa 80 passeggeri a bordo.
Proveniva da Minneapolis; non so ancora nulla al momento sulla dinamica.
"The curve is flattening: we can start lifting restrictions now" = "The parachute has slowed our rate of descent: we can take it off now!"
Chesley Burnett "Sully" Sullenberger
Chesley Burnett "Sully" Sullenberger
- Valerio Ricciardi
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Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
Il bilancio attuale è di quindici feriti, incluso un bambino, di cui tre in condizioni critiche ma non in pericolo di vita.
"Tutti gli 80 passeggeri e l'equipaggio sono stati evacuati", ha detto la Federal Administration Aviation, sottolineando che a guidare le indagini per accertare cosa è accaduto sarà il Canada Transportation Safety Board. Le ricostruzioni iniziali indicano che il volo Delta 4819, un Bombardier CRJ-900LR era partito da Minneapolis intorno alle 11.47 del mattino ora locale.
"Tutti gli 80 passeggeri e l'equipaggio sono stati evacuati", ha detto la Federal Administration Aviation, sottolineando che a guidare le indagini per accertare cosa è accaduto sarà il Canada Transportation Safety Board. Le ricostruzioni iniziali indicano che il volo Delta 4819, un Bombardier CRJ-900LR era partito da Minneapolis intorno alle 11.47 del mattino ora locale.
"The curve is flattening: we can start lifting restrictions now" = "The parachute has slowed our rate of descent: we can take it off now!"
Chesley Burnett "Sully" Sullenberger
Chesley Burnett "Sully" Sullenberger
- Valerio Ricciardi
- FL 500
- Messaggi: 5600
- Iscritto il: 22 agosto 2008, 8:33
Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
Aviation Herald
https://avherald.com/h?article=52439b47&opt=0
Metars:
CYYZ 172100Z 27026G34KT 10SM DRSN BKN040 M09/M15 A2996 RMK CU5 SLP159=
CYYZ 172000Z 27027G35KT 5SM BLSN BKN038 M08/M15 A2994 RMK CU5 VIS VRB 2-8 SLP153=
CYYZ 171932Z 27020G32KT 6SM R24L/2600VP6000FT/D BLSN BKN030 M08/M13 A2994 RMK CU5 RAPPORTO DI INCIDENTE SLP151=
CYYZ 171900Z 27028G35KT 6SM R24L/3000VP6000FT/U BLSN BKN034 M09/M14 A2993 RMK CU6 SLP149=
CYYZ 171800Z 27028G34KT 6SM R33R/3000V5000FT/N R24L/5500V6000FT/U BLSN BKN038 M08/M14 A2992 RMK CF6 SLP146=
CYYZ 171700Z 27029G36KT 3SM R33L/3500VP6000FT/U R33R/2200V3000FT/N BLSN BKN033 M08/M13 A2991 RMK CF5 SLP141=
CYYZ171600Z 26025G35KT 5SM R33R/4500V6000FT/U BLSN BKN030 M07/M12 A2990 RMK CF5 SLP137=
CYYZ 171522Z 26019G26KT 3SM -SHSN DRSN BKN020 M08/M11 A2989 RMK CF6 SLP136=
CYYZ 171500Z 27020G27KT 15SM DRSN BKN030 M07/M13 A2989 RMK CF5 SLP135=
CYYZ 171400Z 31006KT 15SM FEW020 FEW040 M10/M13 A2988 RMK CF1SC1 SC TR SLP133=
https://avherald.com/h?article=52439b47&opt=0
Metars:
CYYZ 172100Z 27026G34KT 10SM DRSN BKN040 M09/M15 A2996 RMK CU5 SLP159=
CYYZ 172000Z 27027G35KT 5SM BLSN BKN038 M08/M15 A2994 RMK CU5 VIS VRB 2-8 SLP153=
CYYZ 171932Z 27020G32KT 6SM R24L/2600VP6000FT/D BLSN BKN030 M08/M13 A2994 RMK CU5 RAPPORTO DI INCIDENTE SLP151=
CYYZ 171900Z 27028G35KT 6SM R24L/3000VP6000FT/U BLSN BKN034 M09/M14 A2993 RMK CU6 SLP149=
CYYZ 171800Z 27028G34KT 6SM R33R/3000V5000FT/N R24L/5500V6000FT/U BLSN BKN038 M08/M14 A2992 RMK CF6 SLP146=
CYYZ 171700Z 27029G36KT 3SM R33L/3500VP6000FT/U R33R/2200V3000FT/N BLSN BKN033 M08/M13 A2991 RMK CF5 SLP141=
CYYZ171600Z 26025G35KT 5SM R33R/4500V6000FT/U BLSN BKN030 M07/M12 A2990 RMK CF5 SLP137=
CYYZ 171522Z 26019G26KT 3SM -SHSN DRSN BKN020 M08/M11 A2989 RMK CF6 SLP136=
CYYZ 171500Z 27020G27KT 15SM DRSN BKN030 M07/M13 A2989 RMK CF5 SLP135=
CYYZ 171400Z 31006KT 15SM FEW020 FEW040 M10/M13 A2988 RMK CF1SC1 SC TR SLP133=
"The curve is flattening: we can start lifting restrictions now" = "The parachute has slowed our rate of descent: we can take it off now!"
Chesley Burnett "Sully" Sullenberger
Chesley Burnett "Sully" Sullenberger
- Valerio Ricciardi
- FL 500
- Messaggi: 5600
- Iscritto il: 22 agosto 2008, 8:33
Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
https://asn.flightsafety.org/wikibase/478376
L'ala separata dalla cellula sarebbe la destra, il che come mera prima ipotesi sarebbe compatibile con un'imbardata incontrollata in senso antiorario dopo la toccata e poi di un impuntamento su un punto del suolo del MLG destro.
L'ala separata dalla cellula sarebbe la destra, il che come mera prima ipotesi sarebbe compatibile con un'imbardata incontrollata in senso antiorario dopo la toccata e poi di un impuntamento su un punto del suolo del MLG destro.
"The curve is flattening: we can start lifting restrictions now" = "The parachute has slowed our rate of descent: we can take it off now!"
Chesley Burnett "Sully" Sullenberger
Chesley Burnett "Sully" Sullenberger
- Valerio Ricciardi
- FL 500
- Messaggi: 5600
- Iscritto il: 22 agosto 2008, 8:33
Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
In questo video proprio all'inizio dell'articolo in verità l'a/m sembra piuttosto allineata all'asse pista ma scendere con velocità verticale assai elevata, ben oltre i limiti di carico dinamico del MLG
https://www.tmz.com/2025/02/17/delta-ai ... #continued
https://www.tmz.com/2025/02/17/delta-ai ... #continued
"The curve is flattening: we can start lifting restrictions now" = "The parachute has slowed our rate of descent: we can take it off now!"
Chesley Burnett "Sully" Sullenberger
Chesley Burnett "Sully" Sullenberger
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Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
Non vedo la richiamata ma una toccata molto violenta...
- sigmet
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Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
A me il rateo di discesa non sembra poi così eccessivo. Per certificazione il carrello deve resistere ad un impatto a – 600ft/min ovvero, per il coefficiente di sicurezza, fino a – 900ft/min non deve rompersi.Dai dati granulari di FR24 , anche se poco attendibili, il rateo era di circa 300ft min. Dalle immagini in rete a me sembra che tocchi prima con l’ala ( aveva almeno 20/25 kts al traverso) e non e’ escluso che una raffica o un vento di caduta dovuto anche agli alti edifici in prossimità della pista possa aver peggiorato la situazione.Ma e' solo una mia impressione.
Ci sedemmo dalla parte del torto visto che tutti gli altri posti erano occupati.
- JT8D
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Re: Toronto, CRJ-900 Delta si capovolge in atterraggio (Thread Tecnico)
Il Transport Safety Board of Canada ha rilasciato oggi il Preliminary Report:
https://www.tsb.gc.ca/sites/default/fil ... rt-ENG.pdf
https://avherald.com/h?article=52439b47&opt=0
"At 1412:42 (1.6 seconds before touchdown), the aircraft’s indicated airspeed was 136 knots, and its ground speed was 111 knots. The aircraft was slightly below the glide slope, but on the visual segment of the approach and tracking the runway centreline. The rate of descent had increased to 1072 fpm, and the bank angle was 5.9° to the right.
Less than 1 second before touchdown, the aircraft’s indicated airspeed was 134 knots, and its ground speed was 111 knots. The bank angle was 7.1° to the right, and the pitch attitude was 1° nose up. The rate of descent was recorded as 1110 fpm.
At 1412:43.6, the right main landing gear (MLG) contacted the runway. The aircraft was in a 7.5° bank to the right with 1° of nose-up pitch and 3g vertical acceleration, at a rate of descent of approximately 1098 fpm (18.3 fps).
At touchdown, the following occurred: the side-stay that is attached to the right MLG fractured, the landing gear folded into the retracted position, the wing root fractured between the fuselage and the landing gear, and the wing detached from the fuselage, releasing a cloud of jet fuel, which caught fire. The exact sequence of these events is still to be determined by further examination of the fracture surfaces.
The aircraft then began to slide along the runway. The fuselage slid down Runway 23, rolling to the right until it became inverted. A large portion of the tail, including most of the vertical stabilizer and the entire horizontal stabilizer, became detached during the roll".
Paolo
https://www.tsb.gc.ca/sites/default/fil ... rt-ENG.pdf
https://avherald.com/h?article=52439b47&opt=0
"At 1412:42 (1.6 seconds before touchdown), the aircraft’s indicated airspeed was 136 knots, and its ground speed was 111 knots. The aircraft was slightly below the glide slope, but on the visual segment of the approach and tracking the runway centreline. The rate of descent had increased to 1072 fpm, and the bank angle was 5.9° to the right.
Less than 1 second before touchdown, the aircraft’s indicated airspeed was 134 knots, and its ground speed was 111 knots. The bank angle was 7.1° to the right, and the pitch attitude was 1° nose up. The rate of descent was recorded as 1110 fpm.
At 1412:43.6, the right main landing gear (MLG) contacted the runway. The aircraft was in a 7.5° bank to the right with 1° of nose-up pitch and 3g vertical acceleration, at a rate of descent of approximately 1098 fpm (18.3 fps).
At touchdown, the following occurred: the side-stay that is attached to the right MLG fractured, the landing gear folded into the retracted position, the wing root fractured between the fuselage and the landing gear, and the wing detached from the fuselage, releasing a cloud of jet fuel, which caught fire. The exact sequence of these events is still to be determined by further examination of the fracture surfaces.
The aircraft then began to slide along the runway. The fuselage slid down Runway 23, rolling to the right until it became inverted. A large portion of the tail, including most of the vertical stabilizer and the entire horizontal stabilizer, became detached during the roll".
Paolo
"La corsa di decollo è una metamorfosi, ecco una quantità di metallo che si trasforma in aeroplano per mezzo dell'aria. Ogni corsa di decollo è la nascita di un aeroplano" (Staccando l'ombra da terra - D. Del Giudice)

