Go Back  FlyerTalk Forums > Travel&Dining > TravelBuzz
Reload this Page >

DB levels on aircraft?

DB levels on aircraft?

Old Oct 7, 19, 9:44 am
  #1  
Original Poster
 
Join Date: Oct 2016
Location: LIT
Programs: Blinged Out
Posts: 542
DB levels on aircraft?

Curious- Wife and I were flying to PWM the other day and we noticed that the MD90 seemed considerably louder at cruising speed/altitude up front than did the 88. She commented about it sounding like a hair dryer in her ear the whole time.

I then got curious and used my db app to start measuring aircraft Ive flown on at cruising altitude/speed. My initial findings are that MDs are loud- even up front (row 10) versus a 737 in row 11. Would anyone like to add data points? It would be nice to know the quietest a/c versus the loud ones.

So Far-

MD 90 Row 10: 84.5db avg
MD 88 Row 4: 82db avg
737-700 (Southwest) Row 11: 78db

Perhaps we can measure and report on this thread- I contend that Airbus aircraft, on average, seem quieter to me at cruise than their BA counterparts. Well see...
luv2vacay likes this.
SeaHawg is offline  
Old Oct 7, 19, 11:01 am
  #2  
 
Join Date: Dec 2015
Location: Atlanta, GA
Programs: Delta SkyMiles,
Posts: 572
I wouldn't exactly trust an iPhone microphone to accurately measure the noise levels, but I guess it's a good rough estimate.
jackvogt is online now  
Old Oct 7, 19, 12:22 pm
  #3  
Original Poster
 
Join Date: Oct 2016
Location: LIT
Programs: Blinged Out
Posts: 542
Oh- totally agree- As much as most on here fly, it would seem like something to do if were ever bored haha! Definitely don't trust my iPhone over pro equipment, but its close enough for government work...
SeaHawg is offline  
Old Oct 7, 19, 12:43 pm
  #4  
FlyerTalk Evangelist
 
Join Date: Dec 2003
Location: Not here; there!
Programs: AA Lifetime Gold
Posts: 22,021
Originally Posted by SeaHawg View Post
Curious- Wife and I were flying to PWM the other day and we noticed that the MD90 seemed considerably louder at cruising speed/altitude up front than did the 88. She commented about it sounding like a hair dryer in her ear the whole time.

I then got curious and used my db app to start measuring aircraft Ive flown on at cruising altitude/speed. My initial findings are that MDs are loud- even up front (row 10) versus a 737 in row 11. Would anyone like to add data points? It would be nice to know the quietest a/c versus the loud ones.

So Far-

MD 90 Row 10: 84.5db avg
MD 88 Row 4: 82db avg
737-700 (Southwest) Row 11: 78db

Perhaps we can measure and report on this thread- I contend that Airbus aircraft, on average, seem quieter to me at cruise than their BA counterparts. Well see...
For what it's worth, when I fly I always travel with disposable foam ear plugs. I've found that they make my flights much more comfortable.
guv1976 is offline  
Old Oct 7, 19, 12:56 pm
  #5  
Original Poster
 
Join Date: Oct 2016
Location: LIT
Programs: Blinged Out
Posts: 542
The plugs feel uncomfortable to me- we normally wear over ear headphones, but the noise canceling effect sometimes gives me a headache.
SeaHawg is offline  
Old Oct 8, 19, 10:26 pm
  #6  
 
Join Date: Aug 2018
Posts: 163
Originally Posted by guv1976 View Post
For what it's worth, when I fly I always travel with disposable foam ear plugs. I've found that they make my flights much more comfortable.
I always grab the ones from my amenity kit and wear them under my Bose noise cancelling headphones.....until the other day when Delta advised me that they don't supply them anymore in their kits!!
RetiredATLATC is offline  
Old Oct 9, 19, 12:32 pm
  #7  
 
Join Date: Nov 2004
Location: Dallas, TX
Programs: DL PM MM, WN A-List, Marriott Titanium
Posts: 948
Im on an original CRJ-900 at cruise altitude, 37,000ft. Sitting in 9B. 74-75db, pretty quiet. I walked up to use the front lavatory because back was inop. 82db at row 1, down to 77db by row 4 of first class. Kind of cool to check it out!
DLmedalliongold is offline  
Old Oct 9, 19, 7:03 pm
  #8  
FlyerTalk Evangelist
 
Join Date: Dec 2003
Location: Not here; there!
Programs: AA Lifetime Gold
Posts: 22,021
Originally Posted by SeaHawg View Post
The plugs feel uncomfortable to me- we normally wear over ear headphones, but the noise canceling effect sometimes gives me a headache.
Are we talking about the same type of ear plugs?

https://www.uline.com/Product/Detail...SABEgKDB_D_BwE
guv1976 is offline  
Old Nov 11, 19, 3:54 am
  #9  
Original Poster
 
Join Date: Oct 2016
Location: LIT
Programs: Blinged Out
Posts: 542
Airbus A330-200 Seat 2J - 39000 feet cruise reading between 69.5 and 71 db

Quiet bird, but the 787, A350, and A380 are quieter
SeaHawg is offline  
Old Nov 21, 19, 9:47 pm
  #10  
Original Poster
 
Join Date: Oct 2016
Location: LIT
Programs: Blinged Out
Posts: 542
More a/c db levels from my last trip:

73.5 db A320 CEO Row 12 over wing CFM56

74.5 db A320 CEO Row 11 Over wing CFM 56

75 db A320 CEO Row 23 CFM 56

71.0 db A319 Row 10 over wing CFM 56

70.0 db at climb, 69.5 db cruising alt/speed Boeing 787-900 Row 8 Exit GENX

70.5 db at climb, 76 db cruising CRJ 900 Row 1
SeaHawg is offline  
Old Nov 25, 19, 11:02 am
  #11  
 
Join Date: Oct 2016
Programs: DL Gold, AA Plat, Hilton Diamond
Posts: 249
FWIW, here's an article from the (US) National Institutes of Health on the hearing damage from loud noises. Doesn't look like the levels reported in this thread rise to the danger point of 85 db, but I agree with guy1976 and always carry foam earplugs with me (and not just for airplanes). Why take the chance when it's your hearing?

National Institutes for Health article on DB levels and hearing loss
DCAFly is offline  
Old Nov 26, 19, 10:29 pm
  #12  
FlyerTalk Evangelist, Moderator, Information Desk, Ambassador, Alaska Airlines
Hilton Contributor BadgeIHG Contributor Badge
 
Join Date: Dec 2006
Location: ANC, MRI
Programs: AS MVP Gold75K, AS 1MM, Maika`i Card, AGR, HH Gold, Hertz PC, Marriott LTG, SPG Gold, CO, 7H, BA, 8E
Posts: 41,535
Please follow the redirect as we send this to our TravelBuzz thread.

~beckoa, co-moderator Information Desk
beckoa is offline  
Old Nov 27, 19, 8:47 am
  #13  
 
Join Date: Feb 2019
Posts: 268
Originally Posted by SeaHawg View Post
More a/c db levels from my last trip:

73.5 db A320 CEO Row 12 over wing CFM56

74.5 db A320 CEO Row 11 Over wing CFM 56

75 db A320 CEO Row 23 CFM 56

71.0 db A319 Row 10 over wing CFM 56

70.0 db at climb, 69.5 db cruising alt/speed Boeing 787-900 Row 8 Exit GENX

70.5 db at climb, 76 db cruising CRJ 900 Row 1
Wonder what those lovely Delta MD-88 are? I find them significantly more noisy than any other aircraft (even sitting in First bulkhead when the engines are all the way on the tail).
If I fly one again I'll have to get a measurement. All I know is that even with my Bose noise cancelling earplugs (earbuds? - the wired ones), I have to crank up my Kindle volume to like 80% to hear anything vs. about 20% on other aircraft.
luv2vacay is offline  
Old Nov 27, 19, 9:16 am
  #14  
 
Join Date: Jun 2013
Location: Ontario. Canada
Programs: Aeroplan, IHG, Enterprise, Avios, Nexus
Posts: 5,744
Some of my earliest flights were on the DC9, predecessor of the MD80 series. DC9s of that vintage had low bypass engines and sitting in the back during take-off from a short runway on a hot day was loud and awesome. The nosiest commercial jet today is whisper quite and quite boring in comparison.
Badenoch is offline  
Old Nov 29, 19, 4:41 pm
  #15  
 
Join Date: Nov 2001
Location: Wanting First. Buying First.
Programs: Lifetime Executive Diamond Platinum VIP with Braniff, Eastern, Midway, National & Pan Am
Posts: 5,564
Originally Posted by SeaHawg View Post
So Far-

MD 90 Row 10: 84.5db avg
MD 88 Row 4: 82db avg
737-700 (Southwest) Row 11: 78db
Surprised that the MD-88 in row 4 is quieter than the MD-90 in row 10. It's been a few months since I've been on any DC-9 derivative but from extensive experience on MD-80s, the further forward you are, the noisier it is.

Anecdotally, I can't think of any airline jet with a noisier cabin than the front of MD-80.

If you want a quiet cabin, the Falcon 8X is amazing. Embraer Legacy 500 too.
Herb687 is offline  

Thread Tools
Search this Thread
Search Engine: