Altitudine operativa ATR72-500

[fbasili]

Scusatemi ma ho cercato dappertutto, e non riesco a sapere qual'è il Service Ceiling dell'ATR72-500, ovvero qual'è la massima altitudine operativa di questo aerero? Oppure visto che può dipendere, in genere a che FL viene impiegato normalmente (ovviamente piu o meno in una tratta tipo medio) ?

Vi ringrazio

FB

[Galaxy]

Normalmente una quota di crociera normale può essere compresa tra FL240 e FL260 circa... non saprei le limitazioni operative...

Alainvolo sarà più preciso sul "suo" gioiellino!

Ciao
Federico

[TKO]

se non erro dovrebbe girare attorno ai 19000 ft a pesi medi.
ma vado a spanne, sinceramente.

[Emiliano]

Il ceiling è di FL250.

Per altri dettagli: http://www.eraa.org/fly-europe/regional ... 72-500.php


Ciao

[alainvolo]

L'utente alainvolo ha richiesto in data 31 ottobre 2011 la cancellazione del suo account e la rimozione dei suoi post.

[moviestar]

Ciao, confermo e aggiungo che sia per il 42 che 72, il ceiling è di 25000ft, e il tetto massimo è dovuto per questioni di pressurizzazione.
Ciao

[aurum]

Ciao, confermo e aggiungo che sia per il 42 che 72, il ceiling è di 25000ft, e il tetto massimo è dovuto per questioni di pressurizzazione.
Ciao

E' piu' che altro per una questione di certificazione.
Volando con ceiling di 25.000 ft si possono osservare limitazioni meno restrittive in ternini di "oxygen requirements" ma in alitalia questo vale solo per l'atr 42 e l'atr 72/212.
L'atr 72/500 ha invece le maschere per tutti gli occupanti.

Ciao

[alainvolo]

L'utente alainvolo ha richiesto in data 31 ottobre 2011 la cancellazione del suo account e la rimozione dei suoi post.

[Galaxy]

Quindi non tutti i pax hanno la garanzia di una maschera?

[alainvolo]

L'utente alainvolo ha richiesto in data 31 ottobre 2011 la cancellazione del suo account e la rimozione dei suoi post.

[aledabo]

Per il 42 il service ceiling e' di FL250.Normalmente si opera attorno ai 20000 ft.

CIAO
ALAIN C.

Volate in nube perennemente...

[alainvolo]

L'utente alainvolo ha richiesto in data 31 ottobre 2011 la cancellazione del suo account e la rimozione dei suoi post.

[pippo682]

La Cessna prouduce il C182 turbo, che ha a bordo un impianto ad ossigeno che assicura 1 ore di autonomia per 4 persone. Viene pubblicizzato proprio con il fatto che puoi salire a 20.000 piedi per evitare il brutto tempo. Certo, non si parla dei mega temporali estivi, ma comunque sei ben sopra le nnormali nubi che, ad esempio, si formano in estate.

[aurum]

Quindi non tutti i pax hanno la garanzia di una maschera?

Questa e' la normativa JAR in materia:

"JAR 25.1447 Equipment standards for oxygen dispensing units
If oxygen dispensing units are installed, the following apply:

(a) There must be an individual dispensing unit for each occupant for whom supplemental oxygen is to be supplied. Units must be designed to cover the nose and mouth and must be equipped with a suitable means to retain the unit in position on the face. Flight crew masks for supplemental oxygen must have provisions for the use of communication equipment.


(b) If certification for operation up to and including 25 000 ft is requested, an oxygen supply terminal, either a supply terminal with the unit of oxygen dispensing equipment already connected or a connection which ensures that the oxygen is immediately available, must be within easy reach of each crew member. For any other occupants the supply terminals and dispensing equipment must be located to allow use of oxygen as required by the applicable National Operational Regulations.


(c) Except as specified in National Operational Regulations, if certification for operation above 25 000 ft is requested, there must be oxygen dispensing equipment meeting the following requirements (see ACJ 25.1447(c)):


(1) There must be an oxygen dispensing unit connected to oxygen supply terminals immediately available to each occupant, wherever seated. If certification for operation above 30 000 ft is requested, the dispensing units providing the required oxygen flow must be automatically presented to the occupants before the cabin pressure altitude exceeds 15 000 ft and the crew must be provided with a manual means to make the dispensing units immediately available in the event of failure of the automatic system. The total number of dispensing units and outlets must exceed the number of seats by at least 10%. The extra units must be as uniformly distributed throughout the cabin as practicable. (See ACJ 25.1447(c)(1).)


(2) Each flight-crew member on flight deck duty must be provided with demand equipment. In addition, each flight-crew member must be provided with a quick-donning type of oxygen dispensing unit, connected to an oxygen supply terminal, that is immediately available to him when seated at his station, and this is designed and installed so that it (see ACJ 25.1447 (c)(2)) -


(i) Can be placed on the face from its ready position, properly secured, sealed, and supplying oxygen upon demand, with one hand within 5 seconds and without disturbing eyeglasses or causing delay in proceeding with emergency duties; and


(ii) Allows, while in place, the performance of normal communication functions.


(3) There must be at least two outlets and units of dispensing equipment of a type similar to that required by sub-paragraph (c)(1) of this paragraph in all other compartments or work areas that may be occupied by passengers or crew members during flight, i.e. toilets, washrooms, galley work areas, etc.


(4) Portable oxygen equipment must be immediately available for each cabin attendan


Ciao

[Galaxy]

Grazie Alain e Aurum

[moviestar]

Io ho volato sia 42-300 che 72-200, e tutti e due le versioni avevano le maschere a caduta con generatore chimico più le outlets laterali in cabina.
Però non sapevo che ci fossero Atr senza maschere in cabina, come diceva Alainvolo.
Non conosco le versioni 500, ero convinto comunque che il tetto max fosse di 25k per press. tant'è che la differenza di pressione raggiunge la max quando si arriva a 25k.
comunque vado a dare un occhiata di nuovo ai manuali, ne avrei bisogno, ciao.

[alainvolo]

L'utente alainvolo ha richiesto in data 31 ottobre 2011 la cancellazione del suo account e la rimozione dei suoi post.

[davymax]

Aurum ha postato la normativa JAR25, vi copio qui sotto la JAR OPS1 che contiene maggiori dettagli. Come potete leggere, se l'aereo certificato per volare non sopra 25000 ft riesce a scendere in max 4 minuti a 13000ft può avere ossigeno minimo solo del 10% dei posti.

JAR-OPS 1.770 Supplemental oxygen –
pressurised aeroplanes
(See Appendix 1 to JAR-OPS
1.770)
(See AMC OPS 1.770)

(a) General

(1) An operator shall not operate a
pressurised aeroplane at pressure altitudes above
10 000 ft unless supplemental oxygen equipment,
capable of storing and dispensing the oxygen
supplies required by this paragraph, is provided.

(2) The amount of supplemental oxygen
required shall be determined on the basis of cabin
pressure altitude, flight duration and the
assumption that a cabin pressurisation failure will
occur at the pressure altitude or point of flight
that is most critical from the standpoint of oxygen
need, and that, after the failure, the aeroplane will
descend in accordance with emergency
procedures specified in the Aeroplane Flight
Manual to a safe altitude for the route to be flown
that will allow continued safe flight and landing.

(3) Following a cabin pressurisation
failure, the cabin pressure altitude shall be
considered the same as the aeroplane pressure
altitude, unless it is demonstrated to the Authority
that no probable failure of the cabin or
pressurisation system will result in a cabin
pressure altitude equal to the aeroplane pressure
altitude. Under these circumstances, the
demonstrated maximum cabin pressure altitude
may be used as a basis for determination of
oxygen supply.

(b) Oxygen equipment and supply requirements

(1) Flight crew members

(i) Each member of the flight crew
on flight deck duty shall be supplied with
supplemental oxygen in accordance with
Appendix 1. If all occupants of flight deck
seats are supplied from the flight crew
source of oxygen supply then they shall be
considered as flight crew members on flight
deck duty for the purpose of oxygen supply.
Flight deck seat occupants, not supplied by
the flight crew source, are to be considered
as passengers for the purpose of oxygen
supply.
(ii) Flight crew members, not
covered by sub-paragraph (b)(1)(i) above,
are to be considered as passengers for the
purpose of oxygen supply.
(iii) Oxygen masks shall be located
so as to be within the immediate reach of
flight crew members whilst at their assigned
duty station.
(iv) Oxygen masks for use by flight
crew members in pressurised aeroplanes
operating at pressure altitudes above 25 000
ft, shall be a quick donning type of mask.

(2) Cabin crew members, additional crew
members and passengers

(i) Cabin crew members and
passengers shall be supplied with
supplemental oxygen in accordance with
Appendix 1, except when sub-paragraph (v)
below applies. Cabin crew members carried
in addition to the minimum number of cabin
crew members required, and additional
crew members, shall be considered as
passengers for the purpose of oxygen
supply.
(ii) Aeroplanes intended to be
operated at pressure altitudes above
25 000 ft shall be provided sufficient spare
outlets and masks and/or sufficient portable
oxygen units with masks for use by all
required cabin crew members. The spare
outlets and/or portable oxygen units are to
be distributed evenly throughout the cabin
to ensure immediate availability of oxygen
to each required cabin crew member
regardless of his location at the time of
cabin pressurisation failure.
(iii) Aeroplanes intended to be
operated at pressure altitudes above
25 000 ft shall be provided an oxygen
dispensing unit connected to oxygen supply
terminals immediately available to each
occupant, wherever seated. The total
number of dispensing units and outlets shall
exceed the number of seats by at least 10%.
The extra units are to be evenly distributed
throughout the cabin.
(iv) Aeroplanes intended to be
operated at pressure altitudes above 25 000
ft or which, if operated at or below 25 000
ft, cannot descend safely within 4 minutes
to 13 000 ft, and for which the individual
certificate of airworthiness was first issued
by a JAA Member State or elsewhere on or
after 9 November 1998, shall be provided
with automatically deployable oxygen
equipment immediately available to each
occupant, wherever seated. The total
number of dispensing units and outlets shall
exceed the number of seats by at least 10%.
The extra units are to be evenly distributed
throughout the cabin.
(v) The oxygen supply
requirements, as specified in Appendix 1,
for aeroplanes not certificated to fly above
25 000 ft, may be reduced to the entire
flight time between 10 000 ft and 13 000 ft
cabin pressure altitudes for all required
cabin crew members and for at least 10% of
the passengers if, at all points along the
route to be flown, the aeroplane is able to
descend safely within 4 minutes to a cabin
pressure altitude of 13 000 ft.

Saluti

[moviestar]

Io ho volato sia 42-300 che 72-200, e tutti e due le versioni avevano le maschere a caduta con generatore chimico più le outlets laterali in cabina.
Però non sapevo che ci fossero Atr senza maschere in cabina, come diceva Alainvolo.
Non conosco le versioni 500, ero convinto comunque che il tetto max fosse di 25k per press. tant'è che la differenza di pressione raggiunge la max quando si arriva a 25k.
comunque vado a dare un occhiata di nuovo ai manuali, ne avrei bisogno, ciao.

Hai un TYPE RATING sull'ATR?Alitalia express?

CIAO
ALAIN C.

Si sono abilitato Atr ma purtroppo non con Alitalia Express.

[alainvolo]

L'utente alainvolo ha richiesto in data 31 ottobre 2011 la cancellazione del suo account e la rimozione dei suoi post.