So I was wondering what is the Aircraft categories all about because from my previous questions answer I got to know about something called Cat D type aircraft so it made me curious to know what are the different types of aircraft categories and which one is the A321-271NX because it happens to be special for me !
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The code is for the exact variant for this Airbus:
A321: This is an Airbus A321, the longest variant of the A320 family.
27*: It comes with PW1100 engines (which makes it a neo).
271: The exact engine variant, which can be found in the TCDS (Type Certificate Data Sheet):
PW1133G-JM Geared Turbo Fan jet engines (MOD 161002)
N: Added for all neo variants.
X: This means the aircraft has Cabin Flex, which allows the operator more freedom in choosing emergency exits:
these doors’ configuration flexibility are there to enable all customers’ operational needs without compromising on cabin comfort
The "Cat D" you mentioned is the approach speed categorisation:
| Category | Approach Speed |
|---|---|
| A | < 91 kt |
| B | 91-120 kt |
| C | 121-140 kt |
| D | 141-165 kt |
| E | 166-210 kt |
The Airbus A321 can be in approach category C or D, depending on the maximum landing weight:
A321 has Approach Category C to 75.5 tonnes MLW and D beyond that to 77.8 tonnes.
You can find the maximum landing weights for the A321neo in the Airbus Aircraft Characteristics Document:
All maximum landing weights for the A321neo are above 75.5t, which would make them all Cat D.
