RE: Db Testing
OK, theres a lot of info above.
My question is this: WHAT is the AMA's standard Testing procedure?
what is the material under the aircraft supposed to be?
Example: If I test on Asphalt at 100Db, I may only be at say 91Db when tested over grass, and only 93Db when testing over dirt.
IR-regardles of what local DB Limitations are, or how THEY test, how does the AMA Enforce Sound limitations at all of their registered sites?
IS there a uniform test? and what are the guidlines to that test?
Hossfly & beepee this is why I am asking. So that our club meets the UNIFORM TESTING PROCEDURES for the AMA for DB LIMITATIONS @ a flying site.
example: we take off of a paved runway, and fly over open desert. Where should we conduct the Db Test?
The aircraft is only on the runway for 10-12 seconds before becoming airborne. So should we test there, or over the open desert which is our true reflecting surface?
How does the AMA Test for Db limits at the NATS? is it over grass, rock, dirt, concrete, or asphalt?
See my reasoning?