Topic Author
Posts: 1729
Joined: Thu Mar 04, 2004 10:03 am

BAC 1-11 Vs. F28: Question About The Spey...

Sat Sep 11, 2004 5:15 am

A question regarding noise regulations:

If the BAC 1-11 and Fokker F28 are not only of the same era but also powered by virtually the same engines, the Rolls Royce Spey, how is it that there are less than five passenger-configured 1-11s still flying in the world (and all but one ROMBAC-built) against almost 100 F28s? Surely, the noise regulations would apply equally to both aircraft, or is the F28 substantially quieter than its British counterpart?

View Large View Medium
Click here for bigger photo!

Photo © Propfreak
View Large View Medium
Click here for bigger photo!

Photo © Sam Chui



How do you say "12 months" in Estonian?
Posts: 2756
Joined: Fri Apr 28, 2000 11:23 am

RE: BAC 1-11 Vs. F28: Question About The Spey...

Sat Sep 11, 2004 11:22 am

As i recall it has something to do with the F.28 being light enough to fall under the lower size limit that governs airliner noise levels.

Also the F.28 uses the Spey 555-15 "Spey Junior" vs the BAC 1-11s Spey 512 family, very possible they have a lower noise signature.
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.

Who is online

Users browsing this forum: No registered users and 12 guests

Popular Searches On

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos