Key facts
Code summary
Code 511
Official title Passenger air transport
Version PSIC 2019
Source layer PSA / BSP
Parent 51 - Air Transport
Section H - Transportation and Storage
Lg
PSIC 2019 Navigation-first hub Group 511 - Passenger air transport
PSIC Group 511 covers Passenger air transport. Direct children below it include Passenger air transport. It clusters closely related activities and helps compare nearby classes before choosing the most defensible...
Next step
Child codes
These are the next codes most users should open after this hub page.
Nearby codes
About this level
Practical summary
Group 511 sits in the PSIC 2019 hierarchy under H Transportation and Storage > 51 Air Transport. This group usually narrows the choice to a small family of classes such as Passenger air transport. It is useful when two or three neighboring activities look similar but should not be collapsed into one code.
Administrative context
Where this code is used
This group is used when reviewers compare a short list of classes such as Passenger air transport and need to decide which family is the closest fit. It is common in internal classification review and administrative lookup work.
Selection note
How to choose it
Use this group when the activity sits between similar classes such as Passenger air transport. The safest choice is the one whose wording matches the actual production, service or operating model most closely.
FAQ
What does PSIC Group 511 cover?
PSIC Group 511 clusters a smaller family of classes under Passenger air transport and is useful when the business sits between closely related options.
How do I compare Group 511 with sibling groups?
Look at the parent class and the nearby sibling groups. On this page, the most relevant nearby options are 512 Freight air transport.
Why is Group 511 useful for classification?
It sits at the point where a broad sector is already narrowed enough to compare a small family of similar classes before the final code choice.