francoflier From France, joined Oct 2001, 3513 posts, RR: 11 Reply 1, posted (2 months 4 days 14 hours ago) and read 2271 times:
Complexity and weight is likely the major reason.
Another one would be that on modern widebodies, PSUs are now mounted so high it is impossible for most to reach it without standing up. And then the flow of air would likely affect everybody within a 1 seat radius...
Looks like I picked the wrong week to quit posting...
Tod From Denmark, joined Aug 2004, 1695 posts, RR: 3 Reply 4, posted (1 month 3 weeks 2 days 13 hours ago) and read 1344 times:
Weight is the primary reason people pay me to engineer gasper system removals.
Although as a pax I prefer to have them, on some models such as the 747 they just move used air around and provide nothing fresh. On that model all the gaasper air comes from above the ceiling just aft of the upper deck. On 767 and 777 it is a mix of recirculated are and air from the main distribution system. On 737 and A330 it is the same air as the main distribution system.