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B752 Differences Along The Line  
User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Posted (7 years 3 days 4 hours ago) and read 2156 times:

Working on RB211-535C powered B752SFs & since soon the RB211-535E4 powered B752SFs would be arriving at the Airline.The RB211-535Cs being the older B752s there were a lot on upgrades along the way.
Anyone aware of the upgrades Airframe wise.I've heard about the Ice detector,the Stab trim switches & Alt L/G ext switch type have been varied.
regds
MEL


Think of the brighter side!
5 replies: All unread, jump to last
 
User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 21
Reply 1, posted (7 years 2 days 11 hours ago) and read 2074 times:

Hi MEL, Buzz here. Some of ours have a new type RH recirc fan installed, the original type didn't last well. So there's a mod to install a 767 recirc fan in it's place.

Let's see, several years ago the cockpit Korry switches were replaced to remove the #387 bulbs - the replacements have LED's.

There are dozens of mods, but at 3 AM while waiting for flights to straggle in for the night my brain can't think of many more.

g'day


User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 2, posted (7 years 1 day 12 hours ago) and read 1979 times:

Some of ours have a new type RH recirc fan installed, the original type didn't last well. So there's a mod to install a 767 recirc fan in it's place.
Our Freighters dont have the RH recirculation fan Installed so I guess that mod would be not applicable to Freighters.However what was the advantage of the B767 fan.

several years ago the cockpit Korry switches were replaced to remove the #387 bulbs - the replacements have LED's.
Guess this was due burn out.

There are dozens of mods, but at 3 AM while waiting for flights to straggle in for the night my brain can't think of many more.
No probs.Rest well & get back.Much appreciated.

regds
MEL



Think of the brighter side!
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 3, posted (7 years 1 day 8 hours ago) and read 1945 times:

Quoting HAWK21M (Thread starter):
Anyone aware of the upgrades Airframe wise.

There were roughly 900 changes to the 757 during its production run. That doesn't count Service Bulletins issued after production ended or minor changes (like swapping one fastener for another).

Tom.


User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 21
Reply 4, posted (7 years 1 day 8 hours ago) and read 1942 times:

Hi MEL, Buzz here... busy night, lots of late airplanes.
The advantage to the 767 RH recirc fan is that it doesn't seem to fail... the 757 RH recirc fan tends to die after a few years.
And the 767 fan has a higher airflow, nice to have in the summer.

g'day


User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 5, posted (7 years 1 day 4 hours ago) and read 1898 times:

Quoting Buzz (Reply 4):
The advantage to the 767 RH recirc fan is that it doesn't seem to fail.

Thanks.
Why is it difficult to get Manufactured reasons for a particular upgrade to an Aircraft before it is delivered.Or reasons like why a certain part was considered ideal on that type  Smile
regds
MEL



Think of the brighter side!
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