n49wa From , joined Dec 1969, posts, RR: Posted (3 years 2 months 4 weeks 1 day 13 hours ago) and read 2365 times:
I've been watching some old airline/airport films on youtube and looking at photos here. I noticed that United's 727 Friendship paint scheme did not include a painted rudder. All other airlines look like they did paint the entire vertical stab and rudder (except bare metal schemes, as AA). Any particular reason?
Did a search, no joy.
AirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 26 Reply 1, posted (3 years 2 months 4 weeks 1 day 10 hours ago) and read 2294 times:
Yeah, on the Boeings, all rudders have to be balanced when painting them. They have a ballast in them. So the weight of the paint has to be distributed across the entire rudder. The Boeing rudders, when painting them, require a RII.
The Airbuses, on the other hand, do not need to be balanced when paint is applied.
A Safe Flight Begins With Quality Maintenance On The Ground.
DL_Mech From United States of America, joined Feb 2000, 1761 posts, RR: 10 Reply 3, posted (3 years 2 months 4 weeks 1 day 6 hours ago) and read 2196 times:
Quoting AirframeAS (Reply 1): Yeah, on the Boeings, all rudders have to be balanced when painting them.
I don't think the 727 has a balanced rudder. In 1991, I recall there were no restrictions in using a roller to paint out the Blue Ball on the PA 727's. I don't think this is possible with 737's, 757's and 767's unless you remove the rudder.
EMBQA From United States of America, joined Oct 2003, 9286 posts, RR: 13 Reply 4, posted (3 years 2 months 4 weeks 1 day 1 hour ago) and read 2134 times:
AirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 26 Reply 5, posted (3 years 2 months 4 weeks ago) and read 1923 times:
Well, my understanding during my time at AS, when we remove the rudder for re-paint, I was told that the rudder had to be balanced while it was being painted (the rudder was always sitting on scales) and that it was a RII.
I am not saying anyone here is incorrect. I am saying that is what I learned when I was working on the 737's at AS. Keep in mind the rudders were composites.
[Edited 2010-02-22 22:07:27]
A Safe Flight Begins With Quality Maintenance On The Ground.
474218 From United States of America, joined Oct 2005, 6340 posts, RR: 10 Reply 6, posted (3 years 2 months 3 weeks 6 days 15 hours ago) and read 1868 times:
Quoting EMBQA (Reply 4): I've been on site to see a: 767, 747-400, 747SP, 757, 737 and 727... at no time were the rudders balanced.
Rudders are balanced. Balancing is required to prevent flutter if hydraulic power or cable tension to the rudder is lost. The SRM provides details on how to ballance and re-balance the rudder.
There are provisions in the SRM for calculating the amount of added weight required after a repaint. Only when the maximum amount of allowable weight would be exceeded must the rudder be removed, striped, repainted and re-balanced.
boeing767mech From United States of America, joined Dec 2000, 992 posts, RR: 3 Reply 7, posted (3 years 2 months 3 weeks 6 days 11 hours ago) and read 1809 times:
If I remember right, the 727's have a weight you can add to the forward part of the spar for a repaint. The SRM gave you the weight part number for different amounts of paint applied up to a certain amount, then you have to balance the flight control. But this is all going from memory 15 years ago working in a aviation sweat shop.
AirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 26 Reply 8, posted (3 years 2 months 3 weeks 6 days 9 hours ago) and read 1774 times:
Quoting boeing767mech (Reply 7): If I remember right, the 727's have a weight you can add to the forward part of the spar for a repaint. The SRM gave you the weight part number for different amounts of paint applied up to a certain amount, then you have to balance the flight control.
That is exactly what I meant. Thank you.
Quoting boeing767mech (Reply 7): But this is all going from memory 15 years ago working in a aviation sweat shop.
I have not touched a 737 in nearly 8-10 years now. Yes, I know...that's sad...really.
A Safe Flight Begins With Quality Maintenance On The Ground.
Sponsor Message: 
From , joined Dec 1969, posts, 
Sponsor Message: 
Printer friendly format
