How much noise do we make?

[GAdams]

I'm sure we all know we are converting money to fuel and fuel to noise but I was going to use a noise sensitive airport late at night and I was doing some research to see if I could comply with the recommendations/limits. My Skymaster cannot. I am providing a link to a noise study the FAA did so many years ago. It's interesting that even back them we were among some of the noisiest aircraft and most all of the big offenders (Lear 23, Sabreliner, Jet Commander) are not flying any more. Be a good neighbor and comply with the restrictions/recommendations.
http://www.tc.faa.gov/its/worldpac/techrpt/rd71-98.pdf

[mshac]

Interesting that the 337 and the Cherokee Six had almost identical sound levels, whereas the 182 was about 14 decibels quieter. The 337 was the only piston twin in the study. It would have been more informative to see it compared against its direct competition. You can't say "we have some of the noisiest aircraft" when there were no other light twins tested. And when a Piper single can match us in loudness...LOL! Of course the jets they tested were on a whole different chart because they were so much louder than the pistons!

[patrolpilot]

Interesting study. From the FAA's Noise Levels for U.S. Certificated and Foreign Aircraft, U.S. Certificated Propeller Driven Small Airplanes (14 CFR Part 36, Appendix F).

The Cessna 337H with the TSIO-360-C (the only model tested) is 78.6 dBA.

Did the airport you mention have posted noise restrictions?

[patrolpilot]

One airport that I'm familiar with is SMO, which has a 95dBA limit 2,200 feet beyond the departure end of the runway for fixed-wing propeller aircraft (https://www.smgov.net/uploadedFiles/...Guide_2013.pdf). Straight up, our airplanes are below that limit.

Anyone know of other airports with posted limits.

[kbecker]

I know KLGB (Long Beach CA), has noise limits with multiple community noise sensors.

Here is a link to the website which show times, location of monitors, runways, approach and take off limits, and a drawing of the airport and monitor locations.

http://www.longbeach.gov/lgb/resources/noise-abatement/

Kevin

[patrolpilot]

Originally Posted by kbecker

I know KLGB (Long Beach CA), has noise limits with multiple community noise sensors.

Here is a link to the website which show times, location of monitors, runways, approach and take off limits, and a drawing of the airport and monitor locations.

http://www.longbeach.gov/lgb/resources/noise-abatement/

Kevin

The Skymaster is well inside the noise requirements; it can operate at any time of the day at LGB.

[mshac]

Originally Posted by patrolpilot

Interesting study. From the FAA's Noise Levels for U.S. Certificated and Foreign Aircraft, U.S. Certificated Propeller Driven Small Airplanes (14 CFR Part 36, Appendix F).

The Cessna 337H with the TSIO-360-C (the only model tested) is 78.6 dBA.

Did the airport you mention have posted noise restrictions?

According to that study, a P337H is quieter than a P210R - Read 'em and weep.