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Help Needed With Part 139 Aircraft Design Groups  
User currently offlineA342 From Germany, joined Jul 2005, 4682 posts, RR: 3
Posted (7 years 7 months 2 weeks 3 days 22 hours ago) and read 2359 times:

On a website about TEX, I found the following quote:

"Airline operations: RSTD TO FAR 139 DESIGN GROUPS AI; AII; AIII; BI AND BII."

But nowhere I could find explanations for these design groups. Maybe you can help me.

Thanks in advance.

A342


Exceptions confirm the rule.
5 replies: All unread, jump to last
 
User currently offlineN231YE From , joined Dec 1969, posts, RR:
Reply 1, posted (7 years 7 months 2 weeks 3 days 18 hours ago) and read 2351 times:

I believe that that is airport reference code (ARC).

If so, then the first character (the letter) is the aircraft approach category, and the second character (the number) is the aircraft design category based on wing span.


User currently offlineCorey07850 From United States of America, joined Feb 2004, 2527 posts, RR: 5
Reply 2, posted (7 years 7 months 2 weeks 3 days 16 hours ago) and read 2340 times:

It's based on wingspan and approach speed:

Wingspan:
I = <49'
II= 49-78'
III= 79-117'
IV= 118-170'
V= 171-213'
VI= 214-262'

App. Speeds:
A= <91kts
B= 91-120kts
C= 121-140kts
D= 141-165kts
E= >166kts


User currently offlineA342 From Germany, joined Jul 2005, 4682 posts, RR: 3
Reply 3, posted (7 years 7 months 2 weeks 3 days 8 hours ago) and read 2325 times:

Quoting Corey07850 (Reply 2):
It's based on wingspan and approach speed:

Thank you, that was helpful !



Exceptions confirm the rule.
User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12146 posts, RR: 51
Reply 4, posted (7 years 7 months 2 weeks 2 days 22 hours ago) and read 2308 times:

Quoting Corey07850 (Reply 2):
It's based on wingspan and approach speed:

Wingspan:
I = <49'
II= 49-78'
III= 79-117'
IV= 118-170'
V= 171-213'
VI= 214-262'

App. Speeds:
A= <91kts
B= 91-120kts
C= 121-140kts
D= 141-165kts
E= >166kts

No, aircraft design groups (ADG) is based on wingspan only. The aircraft approach catagory is based on final approach speeds. You can find the ADG in AC150/5300, Airport Design. ADG VI is a new catgory created just for the An-124, A-380, and B-747-8.


User currently offlineCorey07850 From United States of America, joined Feb 2004, 2527 posts, RR: 5
Reply 5, posted (7 years 7 months 2 weeks 2 days 19 hours ago) and read 2302 times:

Quoting KC135TopBoom (Reply 4):
No, aircraft design groups (ADG) is based on wingspan only. The aircraft approach catagory is based on final approach speeds. You can find the ADG in AC150/5300, Airport Design. ADG VI is a new catgory created just for the An-124, A-380, and B-747-8.

What the original poster provided (AI, AII, BII, etc) are referred to as Airport Reference Codes... The first letter refers to the category of approach speed (of which I provided before) and the Roman numeral refers to the aircraft's classification based on their wingspan (of which I provided above)...

For example an aircraft with an ARC of "AI" would mean a plane with a wingspan less than 49' and an approach speed of less than 91 knots.

The terminology provided by the original poster isn't worded correctly... Look up AC150/5300-13 Appendix 13 for a list of aircraft based on their ARC. It's not so much a Part 139 thing as it is an Advisory Circular


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